Is there a way to change the speed of the fan1 on the M4 board. The command M106 P1 S128? The cooling on my hotend is a little to much so would like to dial it back a bit.
add the following line into the pins_PANDA_M4.h
and then compile&upload firmware again
#define FAN1_PIN 119 // this is the FAN1 on the board. M106: Set Fan Speed 0~255,M107: Fan Off. E.g "M106 P1 S255"
after that you can see the FAN1 menu in the screen if you use the LCD12864.