Sainsmart 3018 and OxLaser 2.5W burning in white space and won't shut off

[LightBurn (Oz)]

Start with the basics:

• Have you enabled laser mode? ($32=1)

Laser not turning off between cuts? (burning during travel moves)

If you have a GRBL device, and your laser is still on when moving between shapes, like this: [image] It most likely means you are using GRBL 1.1f or later, but do not have the controller in Laser Mode. Fix this by typing $32=1 in the Console window and pressing enter If you have a Ruida or other DSP controller and are seeing this happen, it is most likely a dying high-voltage power supply unit (PSU). The drive circuit that turns the laser power off and on tends to go first, before the part …