Fan Reference Configuration

Drive Fan

• There are two ways to configure the drive fan:

• The first method is self-configuration, so that the fan works as soon as the motor starts.

• The second method is to run directly at startup.

• First method

• The exclamation mark before indicates the reversed fan port status, making it work when connected to Klipper.

[output_pin driver_fan]
pin: !PF7

• Second method

[controller_fan driver_fan]      # Driver cooling fan
pin: 
cycle_time: 0.00003              # Cycle time
max_power: 1.0                   # Maximum power
shutdown_speed: 0.0              # Shutdown speed
fan_speed: 0.9                   # Fan speed when heater or stepper driver is active (0.0 to 1.0). Default is 1.0.
idle_timeout: 90                 # Time in seconds to keep the fan running after the stepper driver or heater is no longer active. Default is 30 seconds.
idle_speed: 0.4                  # Fan speed after the stepper driver is no longer active and before idle_timeout is reached (0.0 to 1.0). Default is fan_speed.
stepper: stepper_x               # Active motors
#Define the name of the heater/stepper configuration section associated with this fan. 
#If a comma-separated list of heater/stepper names is provided here, the fan will be enabled when any of the given heaters/steppers are enabled.
#The default heater is "extruder", and the default stepper is all steppers.

7040 Fan

• Mainly introduces the solution to the fan spinning at startup

info

• A brief explanation here
• Add a PWM signal pin during firmware compilation, and reverse its status.
• For testing with SUPER8_PRO, use pin PF8. During firmware compilation, select GPIO pins to set at micro-controller startup and add !PF8.
• Please note the ! must be an English exclamation mark.
• Other motherboards follow the same logic.

[fan]
##    Print Cooling Fan 
pin:
max_power: 0.9
cycle_time: 0.002
hardware_pwm: false
shutdown_speed: 0

Same Pin Configuration for Multiple Fan Ports

• Not applicable for stepper motor pins

  [multi_pin fan_pin]
  pins:PA1,PA2,PA3,PA4
  
  [fan]
  pin:multi_pin:my_fan