✨ RGB_STARTUP_TEST

config/default/Configuration.h

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3296,16 +3296,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3314,6 +3317,10 @@
   #define RGB_LED_G_PIN 51
   #define RGB_LED_B_PIN 52
   #define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3367,16 +3367,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3385,6 +3388,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Alfawise/U20/Configuration.h

@@ -3368,16 +3368,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3386,6 +3389,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/AliExpress/UM2pExt/Configuration.h

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/A2/Configuration.h

@@ -3272,16 +3272,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3290,6 +3293,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/A2plus/Configuration.h

@@ -3272,16 +3272,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3290,6 +3293,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/A6/Configuration.h

@@ -3364,16 +3364,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3382,6 +3385,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/A8/Configuration.h

@@ -3275,16 +3275,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3293,6 +3296,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/A8plus/Configuration.h

@@ -3275,16 +3275,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3293,6 +3296,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/A9/Configuration.h

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/E10/Configuration.h

@@ -3273,16 +3273,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3291,6 +3294,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3272,16 +3272,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3290,6 +3293,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3272,16 +3272,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3290,6 +3293,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3309,16 +3309,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3327,6 +3330,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3309,16 +3309,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3327,6 +3330,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/ET4/Configuration.h

@@ -3309,16 +3309,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3327,6 +3330,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/ET4X/Configuration.h

@@ -3309,16 +3309,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3327,6 +3330,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3304,16 +3304,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3322,6 +3325,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/ET5/Configuration.h

@@ -3304,16 +3304,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3322,6 +3325,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Anet/ET5X/Configuration.h

@@ -3304,16 +3304,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3322,6 +3325,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/AnyCubic/Chiron/Configuration.h

@@ -3275,16 +3275,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3293,6 +3296,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3304,16 +3304,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3322,6 +3325,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/AnyCubic/i3/Configuration.h

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/ArmEd/Configuration.h

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 #define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   #define RGB_LED_G_PIN 4
   #define RGB_LED_B_PIN 6
   #define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 #define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   #define RGB_LED_G_PIN 4
   #define RGB_LED_B_PIN 6
   #define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Artillery/Hornet/Configuration.h

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3286,16 +3286,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 #define RGB_LED
 //#define RGBW_LED
 
@@ -3304,6 +3307,10 @@
   #define RGB_LED_G_PIN 4
   #define RGB_LED_B_PIN 6
   #define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 #define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   #define RGB_LED_G_PIN 4
   #define RGB_LED_B_PIN 6
   #define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Azteeg/X5GT/Configuration.h

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3268,16 +3268,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3286,6 +3289,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3292,16 +3292,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3310,6 +3313,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3292,16 +3292,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3310,6 +3313,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3276,16 +3276,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3294,6 +3297,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/BIQU/BX/Configuration.h

@@ -3292,16 +3292,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3310,6 +3313,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/BQ/Hephestos/Configuration.h

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/BQ/Hephestos_2/Configuration.h

@@ -3284,16 +3284,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3302,6 +3305,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/BQ/WITBOX/Configuration.h

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/CTC/A13/Configuration.h

@@ -3272,16 +3272,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3290,6 +3293,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/CTC/Bizer/Configuration.h

@@ -3276,16 +3276,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3294,6 +3297,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Cartesio/Configuration.h

@@ -3286,16 +3286,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3304,6 +3307,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Copymaster3D/300/Configuration.h

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Copymaster3D/400/Configuration.h

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Copymaster3D/500/Configuration.h

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3279,16 +3279,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3297,6 +3300,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3279,16 +3279,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3297,6 +3300,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3285,16 +3285,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3303,6 +3306,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3273,16 +3273,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3291,6 +3294,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Creality/CR-10 S5/BigTreeTech SKR Mini E3 v3/Configuration.h

@@ -3285,16 +3285,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3303,6 +3306,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3273,16 +3273,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3291,6 +3294,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3274,16 +3274,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3292,6 +3295,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3299,16 +3299,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3317,6 +3320,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3304,16 +3304,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3322,6 +3325,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3281,16 +3281,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3299,6 +3302,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3282,16 +3282,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3300,6 +3303,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3282,16 +3282,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3300,6 +3303,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3283,16 +3283,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3301,6 +3304,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3276,16 +3276,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3294,6 +3297,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3276,16 +3276,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3294,6 +3297,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3275,16 +3275,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3293,6 +3296,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3273,16 +3273,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3291,6 +3294,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3278,16 +3278,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3296,6 +3299,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3274,16 +3274,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3292,6 +3295,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3274,16 +3274,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3292,6 +3295,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Creality/Ender-3 S1/STM32F1/Configuration.h

@@ -3276,16 +3276,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3294,6 +3297,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Creality/Ender-3 S1/STM32F4/Configuration.h

@@ -3283,16 +3283,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3301,6 +3304,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Creality/Ender-3 V2/BigTreeTech SKR Mini E3 v3/CrealityUI/Configuration.h

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

config/examples/Creality/Ender-3 V2/BigTreeTech SKR Mini E3 v3/MarlinUI/Configuration.h

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3270,16 +3270,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3288,6 +3291,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3269,16 +3269,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3287,6 +3290,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3271,16 +3271,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3289,6 +3292,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver

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

@@ -3269,16 +3269,19 @@
  * luminance values can be set from 0 to 255.
  * For NeoPixel LED an overall brightness parameter is also available.
  *
- * *** CAUTION ***
+ *  === CAUTION ===
  *  LED Strips require a MOSFET Chip between PWM lines and LEDs,
  *  as the Arduino cannot handle the current the LEDs will require.
  *  Failure to follow this precaution can destroy your Arduino!
+ *
  *  NOTE: A separate 5V power supply is required! The NeoPixel LED needs
  *  more current than the Arduino 5V linear regulator can produce.
- * *** CAUTION ***
  *
- * LED Type. Enable only one of the following two options.
+ *  Requires PWM frequency between 50 <> 100Hz (Check HAL or variant)
+ *  Use FAST_PWM_FAN, if possible, to reduce fan noise.
  */
+
+// LED Type. Enable only one of the following two options:
 //#define RGB_LED
 //#define RGBW_LED
 
@@ -3287,6 +3290,10 @@
   //#define RGB_LED_G_PIN 43
   //#define RGB_LED_B_PIN 35
   //#define RGB_LED_W_PIN -1
+  //#define RGB_STARTUP_TEST              // For PWM pins, fade between all colors
+  #if ENABLED(RGB_STARTUP_TEST)
+    #define RGB_STARTUP_TEST_INNER_MS 10  // (ms) Reduce or increase fading speed
+  #endif
 #endif
 
 // Support for Adafruit NeoPixel LED driver