I have a laser diode and converted my Wanhao i3 Duplicator Plus (Marlin compatible i think) into a laser engraver and cutter.

These commands control the laser diode when its using my extruder fan PWM.
M106 = off...also M106 S255
M107 = on...also M106 S0

The laser power can be varied with M106 Sxxx.

M106 S254 is very dim and M106 S0 is full power.

Can these be included in next iteration?