Make sure the controller is reporting positions in mm, as expected by LightBurn ( $13=0).

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).

The pause, which happens on older versions, or when not using Laser Mode, will cause excessive burn spots when engraving images.

If you have an older version of GRBL (prior to 1.1f) it's highly recommended to upgrade the firmware, as Laser Mode also prevents the machine from pausing with every power change.

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 Device Settings.

You might need to adjust your spindle max RPM value ( $30) to match the LightBurn default (1000) or vice versa.

Going to fiddle with the driver some, see if I can figure it out.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. Similar results, think the only difference was I didn’t get the error about driver failing to restart. Everything was working last time I used lightburn a few days previously, and stopped working when I updated. Uninstalled and followed the procedure you listed above. Then have Windows reinstall the driver or get the latest driver from WCH:

Try removing the driver entirely in the Driver tab removing all remnants of the driver. You have a bad driver or driver conflict on the WCH340.(mouse, keyboard, monitor, headphones, etc…)

Seems a stretch as everything else is working. If the laser is working when you don’t receive the USB error then this seems less likely. The USB port on the controller side is damaged.When this happens does LightBurn connect and work correctly?ĭid you attempt the order of operations I listed above?

For ipod instal LightBurn 1.4.01