What version of the firmware are you using? Latest
Is the problem repeatable? YES
Under what conditions does the bug occur?
Power on
– Try M3S255 > Laser stays off.
– Try M5
– Try M1F1000 (or any speed you want)
– Try M3S255 > Laser powers on as expected
After that, laser works as expected until next reset.
#1 – brakthehun 于 2019-10-04
That happens when you’re in Laser mode for safety.
If you set $32=0,, you can control the laser in G0 mode.
This is a function of GRBL and not the porting to the ESP32. I’m sure you can dig around the settings and disable that function in laser mode.