How work FAN 2 on Cheetah 1.2 ?

Hello,

How does FAN 2 work? Is it well suited for cooling the motherboard?

Is FAN 2 regulated according to the temperature of the motherboard?

For the moment I use the command "M106 P1 255" in the start gcode, is it useless?

Thank you.

Same question here! 🙂

Put in gcode:
M106 P1 T45 H1

This sets fan 1 to run any time the temperature of heater 1 is above 45 Celsius

Fan1= P0 /Fan2=P1

Thanks for the explanation ;-)
Do you think it be possible to integrate it directly in Marlin? (in case of forgetting)

Edit: found this in "configuration_adv.h"
#define STARTUP_COMMANDS "M106 P1 S128" // Start board fan at 50%