![]() It is highly configurable, and this is both a blessing and a curse. Grbl firmware was originally designed for CNC machines and 3D printers, with laser support added more recently. ![]() ![]() Set your machine status reporting to be relative to the workspace origin, not the machine origin (\$10=0). If your machine uses negative workspace coordinates you'll need to apply a workspace offset (G10 L2 P1 xx yy). You might need to enable "Laser Mode" if you have GRBL 1.1f or later (\$32=1). The value in LightBurn is called "S-Value Max", in the (DeviceSettings.md#s-value-max). You might need to adjust your spindle max RPM value ($30) to match the LightBurn default (1000) or vice versa. If you have a GCode-based system, like a Shapeoko, Eleksmaker, X-Carve, or Acro system, you might need to make some simple changes to get the most from LightBurn. Lightburn settings w/ GRBL LightBurnSoftware/Documentation/blob/master/CommonGrblSetups.md (README.md) I generally use the same zero point in the front left of the bed located with a corner block for most of my work. I’m wondering now, is there a way to tell either Lightburn, or CNCJS what the physical offset is on the laser for the SAME G54 work location. I did manually change the code and it works fine when run through CNCjs. I’m told by lightburn I can not use a G55 command. To complicate things, as a long time CNC operator I would prefer to use G54 as my spindle offset, and G55 as my laser offset. Since I can spit the GCode out of Lightburn and just run it from CNCjs without having to change all my settings then I want to do that. I use CNCjs at the moment to send all the Gcode, and it has a laser module in it that works quite well. ![]() However, because of the GRBL settings needing to be changed…well…that’s frustrating. I ran a test using lightburn and all went fine after changing all the settings. I have a shapeoko 3 XXL with a Jtech attached. I think maybe I’m getting way ahead of myself on my hopes for this but here is my plan. I posted this topic over at lightburn, but figured I’d post it here as well, as I am trying to figure out the best practice for this little frustration I have.
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