3D-printing/klipper
1
0
Fork 0
mirror of https://github.com/Klipper3d/klipper.git synced 2026-02-08 09:10:56 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

Merge 84fc18e466 into 6d7d3403e4

Browse source
This commit is contained in:
Neo 2026-02-08 01:59:51 +01:00 • committed by GitHub
commit b71c32f1ff
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 10 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

3
docs/Config_Reference.md
View file

@ -3349,6 +3349,9 @@ information.
# The minimum fan speed (expressed as a value from 0.0 to 1.0) that
# the fan will be set to for PID temperature fans.
# The default is 0.3.
#invert_control: False
# The control output is inverted. Useful for bed fans that
# are supposed to increase temperature instead of decreasing it.
#gcode_id:
# If set, the temperature will be reported in M105 queries using the
# given id. The default is to not report the temperature via M105.

8
klippy/extras/temperature_fan.py
View file

@ -38,6 +38,7 @@ class TemperatureFan:
algos = {'watermark': ControlBangBang, 'pid': ControlPID}
algo = config.getchoice('control', algos)
self.control = algo(self, config)
self.invert_control = config.getboolean('invert_control', False)
self.next_speed_time = 0.
self.last_speed_value = 0.
gcode = self.printer.lookup_object('gcode')
@ -70,6 +71,8 @@ class TemperatureFan:
return self.min_speed
def get_max_speed(self):
return self.max_speed
def get_invert_control(self):
return self.invert_control
def get_status(self, eventtime):
status = self.fan.get_status(eventtime)
status["temperature"] = round(self.last_temp, 2)
@ -127,7 +130,7 @@ class ControlBangBang:
elif (not self.heating
and temp <= target_temp-self.max_delta):
self.heating = True
if self.heating:
if self.heating != self.temperature_fan.get_invert_control():
self.temperature_fan.set_tf_speed(read_time, 0.)
else:
self.temperature_fan.set_tf_speed(
@ -170,6 +173,9 @@ class ControlPID:
temp_integ = max(0., min(self.temp_integ_max, temp_integ))
# Calculate output
co = self.Kp*temp_err + self.Ki*temp_integ - self.Kd*temp_deriv
# Handle inverted control
if self.temperature_fan.get_invert_control():
co = self.temperature_fan.get_max_speed() - co
bounded_co = max(0., min(self.temperature_fan.get_max_speed(), co))
self.temperature_fan.set_tf_speed(
read_time, max(self.temperature_fan.get_min_speed(),