I have an Ender 3 S1 with the CV laser module. I’m trying unsuccessfully to get Lightburn to work with engraving. I’ve connected the printer to my PC with a USB-C cable, I’ve manually configured the laser in Lightburn by selecting grbl-M3 (1.1e or earlier) if i selected marlin nothing works,
with grbl-m3,I can move the axes, do an auto home with g28 command, I can activate the laser via M03 and stop it via M05, I can open the frame to preview the engraving area, but when I start engraving, the laser engraves correctly, but it also engraves during movement; it doesn’t seem to stop during these movements, resulting in my engraving with lines.
Type $$ in the “console” window; you should see the parameter $32=1. If it is =0, type $32=1 in the console window and check if you receive the message “ok $32=1 ok”.
The question is: what firmware is running on it? You can only select Marlin if it’s running Marlin But as you already noticed, it seems to be a grbl variant. But try grbl instead of grbl-m3 first. The latter is legacy and should only be used for really old firmwares.
But as you already noticed, it seems to be a grbl variant. But try grbl instead of grbl-m3 first. The latter is legacy and should only be used for really old firmwares.