J Tech Laser and the X Controller

[MRoss]

Here is some info from another post

@Joec

Anyway, untouched (with settings or similar) the PWM power range should be between S1200 and S18000. S1200 is your laser-focusing setting and won’t burn anything. S18000 is obviously full power at your driver board’s current jumper setting. The range where you’ll get discernible results is probably between ~3000 and maybe ~10000, depending upon your amps and the material being cut/engraved…anything above that (on wood, at least) is pretty much the same result. I don’t remember the corresponding amp readings at these PWM values. The other common PWM commands of M3 and M5 work as advertised, and I do nothing to the GRBL environment when switching back and forth between laser and cutter.