✨ Model Predictive Temperature Control

MarlinFirmware/Marlin#23751

config/default/Configuration.h

@@ -608,10 +608,12 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
+
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -633,7 +635,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/3DFabXYZ/Migbot/Configuration.h

@@ -605,10 +605,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -631,7 +632,45 @@
     #define DEFAULT_Ki   3.22
     #define DEFAULT_Kd  65.83
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/ADIMLab/Gantry v1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/ADIMLab/Gantry v2/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Alfawise/U20-bltouch/Configuration.h

@@ -659,10 +659,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -688,7 +689,45 @@
     #define DEFAULT_Ki   1.00
     #define DEFAULT_Kd  74.22
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Alfawise/U20/Configuration.h

@@ -659,10 +659,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -688,7 +689,45 @@
     #define DEFAULT_Ki   1.00
     #define DEFAULT_Kd  74.22
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/AliExpress/CL-260/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/AliExpress/UM2pExt/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   0.69
     #define DEFAULT_Kd  34.32
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/A2/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/A2plus/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/A6/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.02
     #define DEFAULT_Kd  69.29
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/A8/Configuration.h

@@ -605,10 +605,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -632,7 +633,45 @@
     #define DEFAULT_Ki   1.25
     #define DEFAULT_Kd  86.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/A8plus/Configuration.h

@@ -605,10 +605,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -632,7 +633,45 @@
     #define DEFAULT_Ki  6.33
     #define DEFAULT_Kd 95.60
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/A9/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki  2.47
     #define DEFAULT_Kd 93.27
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/E10/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/E16/BTT SKR 1.3/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -631,7 +632,45 @@
     #define DEFAULT_Ki   1.25
     #define DEFAULT_Kd  86.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/E16/Stock/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -631,7 +632,45 @@
     #define DEFAULT_Ki   1.25
     #define DEFAULT_Kd  86.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/ET4+/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -635,7 +636,45 @@
     #define DEFAULT_Ki   1.38
     #define DEFAULT_Kd  62.92
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/ET4-Pro/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -635,7 +636,45 @@
     #define DEFAULT_Ki   1.38
     #define DEFAULT_Kd  62.92
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/ET4/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -635,7 +636,45 @@
     #define DEFAULT_Ki   1.38
     #define DEFAULT_Kd  62.92
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/ET4X/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -635,7 +636,45 @@
     #define DEFAULT_Ki   1.38
     #define DEFAULT_Kd  62.92
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/ET5-Pro/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki 2.03
     #define DEFAULT_Kd 71.17
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/ET5/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki 2.03
     #define DEFAULT_Kd 71.17
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Anet/ET5X/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki 2.03
     #define DEFAULT_Kd 71.17
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/AnyCubic/Chiron/Configuration.h

@@ -608,10 +608,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -634,7 +635,45 @@
     #define DEFAULT_Ki   0.86
     #define DEFAULT_Kd  60.97
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/AnyCubic/Mega Zero 2.0/Anycubic V1/Configuration.h

@@ -605,10 +605,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -631,7 +632,45 @@
     #define DEFAULT_Ki   1.18
     #define DEFAULT_Kd  66.76
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/AnyCubic/Mega Zero/Anycubic V1/Configuration.h

@@ -605,10 +605,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -631,7 +632,45 @@
     #define DEFAULT_Ki   1.18
     #define DEFAULT_Kd  66.76
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/AnyCubic/Mega Zero/BigTreeTech SKR Mini MZ V1.0/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.18
     #define DEFAULT_Kd  66.76
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/AnyCubic/i3 Mega/Configuration.h

@@ -625,10 +625,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -651,7 +652,45 @@
     #define DEFAULT_Ki   1.17
     #define DEFAULT_Kd  54.19
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/AnyCubic/i3/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   0.84
     #define DEFAULT_Kd  64.84
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/ArmEd/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   2.57
     #define DEFAULT_Kd  53.37
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Artillery/Genius Pro/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki  1.04
     #define DEFAULT_Kd 23.88
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Artillery/Genius/BLTouch/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   0.57
     #define DEFAULT_Kd  37.76
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Artillery/Genius/V1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   0.57
     #define DEFAULT_Kd  37.76
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Artillery/Hornet/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki  0.97
     #define DEFAULT_Kd 59.78
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Artillery/Sidewinder X1/0.9 BMG - E3D V6/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -640,7 +641,45 @@
     #define DEFAULT_Ki   5.69
     #define DEFAULT_Kd  56.64
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Artillery/Sidewinder X1/V1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.14
     #define DEFAULT_Kd  46.57
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Artillery/Sidewinder X2/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki  1.14
     #define DEFAULT_Kd 46.57
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Azteeg/X5GT/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BIBO/TouchX/cyclops/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.37
     #define DEFAULT_Kd 104.50
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BIBO/TouchX/default/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.37
     #define DEFAULT_Kd 104.50
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BIQU/B1 - SKR 1.4/Configuration.h

@@ -606,10 +606,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -632,7 +633,45 @@
     #define DEFAULT_Ki   1.85
     #define DEFAULT_Kd  73.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BIQU/B1 - SKR 2/Configuration.h

@@ -606,10 +606,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -632,7 +633,45 @@
     #define DEFAULT_Ki   1.85
     #define DEFAULT_Kd  73.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BIQU/B1 SE Plus/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   2.49
     #define DEFAULT_Kd  80.40
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BIQU/BX/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki 0.55
     #define DEFAULT_Kd 46.14
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BIQU/Thunder Standard/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BQ/Hephestos/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   2.00
     #define DEFAULT_Kd  66.47
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BQ/Hephestos_2/Configuration.h

@@ -612,10 +612,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -643,7 +644,45 @@
     //#define DEFAULT_Ki   0.45
     //#define DEFAULT_Kd   3.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/BQ/WITBOX/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/CTC/A13/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/CTC/Bizer/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki 1.07
     #define DEFAULT_Kd 70.38
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/CTC/i3 2560 Rev A/no probe/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.00
     #define DEFAULT_Kd  98.93
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Cartesio/Configuration.h

@@ -605,10 +605,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -641,7 +642,45 @@
     //#define DEFAULT_Ki   1.0
     //#define DEFAULT_Kd 100.0
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Copymaster3D/300/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki  16.53
     #define DEFAULT_Kd 113.58
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Copymaster3D/400/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Copymaster3D/500/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki  16.53
     #define DEFAULT_Kd 113.58
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 Mini/BigTreeTech SKR Mini E3 2.0/Configuration.h

@@ -613,10 +613,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -639,7 +640,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 Mini/CrealityV1/Configuration.h

@@ -613,10 +613,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -639,7 +640,45 @@
     #define DEFAULT_Ki   1.72
     #define DEFAULT_Kd  73.96
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 Mini/MEEB-3DP/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   2.11
     #define DEFAULT_Kd  75.35
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 S4/CrealityV1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 S5/BigTreeTech SKR Mini E3 1.2 with TFT35 E3 V3.0/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 S5/CrealityV1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 S5/CrealityV2.2-BLTouch/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define  DEFAULT_Ki 1.59
     #define  DEFAULT_Kd 68.97
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 V2/Configuration.h

@@ -611,10 +611,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -637,7 +638,45 @@
     #define DEFAULT_Ki   1.59
     #define DEFAULT_Kd  59.40
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10 V3/Configuration.h

@@ -611,10 +611,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -637,7 +638,45 @@
     #define DEFAULT_Ki   1.59
     #define DEFAULT_Kd  59.40
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10/BigTreeTech SKR Mini E3 2.0/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10/CrealityV1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.72
     #define DEFAULT_Kd  73.96
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10S/BigTreeTech SKR 1.4 Turbo TMC2209/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10S/BigTreeTech SKR 2.0 TMC2209/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki  3.46
     #define DEFAULT_Kd 92.02
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10S/BigTreeTech SKR Mini E3 2.0/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10S/BigTreeTech SKR Pro v1.2/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-10S/CrealityV1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-20 Pro/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-20/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-30 PrintMill/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   2.14
     #define DEFAULT_Kd  68.33
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-6 SE/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   0.81
     #define DEFAULT_Kd  63.12
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/CR-8/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-2 Pro/CrealityV423/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   2.62
     #define DEFAULT_Kd  78.81
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-2/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Max/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.56
     #define DEFAULT_Kd  73.30
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Pro/BigTreeTech SKR 1.4 Turbo/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.08
     #define DEFAULT_Kd 114.00
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Pro/BigTreeTech SKR Mini E3 1.0/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Pro/BigTreeTech SKR Mini E3 1.2/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Pro/BigTreeTech SKR Mini E3 2.0/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Pro/BigTreeTech SKR Mini E3 3.0/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Pro/CrealityV1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Pro/CrealityV422/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   2.62
     #define DEFAULT_Kd  78.81
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 Pro/CrealityV427/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 S1/Configuration.h

@@ -605,10 +605,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki  1.87
     #define DEFAULT_Kd  70.18
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 V2/BigTreeTech SKR E3 Turbo/CrealityUI/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   2.62
     #define DEFAULT_Kd  78.81
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 V2/BigTreeTech SKR E3 Turbo/MarlinUI/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   2.62
     #define DEFAULT_Kd  78.81
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 V2/CrealityV422/CrealityUI/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   2.62
     #define DEFAULT_Kd  78.81
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3 V2/CrealityV422/MarlinUI/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   2.62
     #define DEFAULT_Kd  78.81
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3/BigTreeTech E3 RRF/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3/BigTreeTech SKR 1.4/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3/BigTreeTech SKR E3 Turbo/2-into-1 Hotend/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3/BigTreeTech SKR E3 Turbo/Dual Z/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3/BigTreeTech SKR E3 Turbo/Single Extruder/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3/BigTreeTech SKR E3-DIP V1.1/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -629,7 +630,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================

config/examples/Creality/Ender-3/BigTreeTech SKR Mini E3 1.0/Configuration.h

@@ -604,10 +604,11 @@
 //===========================================================================
 //============================= PID Settings ================================
 //===========================================================================
-// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
+// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
+// temperature control. Disable both for bang-bang heating.
+#define PIDTEMP          // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
+//#define MPCTEMP        // ** EXPERIMENTAL **
 
-// Comment the following line to disable PID and enable bang-bang.
-#define PIDTEMP
 #define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
 #define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
 #define PID_K1 0.95      // Smoothing factor within any PID loop
@@ -630,7 +631,45 @@
     #define DEFAULT_Ki   1.54
     #define DEFAULT_Kd  76.55
   #endif
-#endif // PIDTEMP
+#endif
+
+/**
+ * Model Predictive Control for hotend
+ *
+ * Use a physical model of the hotend to control temperature. When configured correctly
+ * this gives better responsiveness and stability than PID and it also removes the need
+ * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
+ */
+#if ENABLED(MPCTEMP)
+  #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
+  #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
+
+  #define MPC_INCLUDE_FAN                             // Model the fan speed?
+
+  // Measured physical constants from M306
+  #define MPC_BLOCK_HEAT_CAPACITY { 16.7f }           // (J/K) Heat block heat capacities.
+  #define MPC_SENSOR_RESPONSIVENESS { 0.22f }         // (K/s per ∆K) Rate of change of sensor temperature from heat block.
+  #define MPC_AMBIENT_XFER_COEFF { 0.068f }           // (W/K) Heat transfer coefficients from heat block to room air with fan off.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    #define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f }  // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
+  #endif
+
+  // For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
+  #if ENABLED(MPC_INCLUDE_FAN)
+    //#define MPC_FAN_0_ALL_HOTENDS
+    //#define MPC_FAN_0_ACTIVE_HOTEND
+  #endif
+
+  #define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f        // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
+  //#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f      // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
+
+  // Advanced options
+  #define MPC_SMOOTHING_FACTOR 0.5f                   // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
+  #define MPC_MIN_AMBIENT_CHANGE 1.0f                 // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
+  #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
+
+  #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+#endif
 
 //===========================================================================
 //====================== PID > Bed Temperature Control ======================