Hotend fan behavior

[mtmello2003]

I really don’t like the default hotend fan behavior: when idle (not printing), it runs at 50% power for 12 hours...

I much prefer the default Elegoo-style behavior: when idle, after the hotend temperature drops below 50°C, the fan turns off.

For those who want the same behavior, just comment out this entire section in printer.conf:

#[controller_fan heatbreak+mainboard_fan]
#pin: PC7
#fan_speed: 1.0
#idle_speed: 0.5
#idle_timeout: 43200 ; 50% speed for 12h then OFF
#shutdown_speed: 1
#heater: extruder, heater_bed
#stepper: stepper_x, stepper_y, stepper_z, extruder

And add this section to your user_settings.cfg:

[heater_fan hotend_fan]
pin: PC7
heater: extruder
heater_temp: 50.0
fan_speed: 1.0
shutdown_speed: 0

[atticusm]

Hey mtmello. Did you find a way to turn the fan off when not in use?