Howdy–I added a laser to my FluidNC-based CNC with homing switches in the right rear corner, such that the entire workspace is negative: the front left corner is -900, -900.
In gSender this has worked fine for years, and I believed I could get the same behavior in Lightburn by setting origin to “right rear” and enabling “CNC Machine”. However, as can be seen in the images below, Lightburn treats the upper right as the origin and both axes as positive in the workspace. Changing “CNC Machine” or “Machine Coordinates” or using “Current Location” to start appears to have no effect: the machine always errors out when attempting to run any job, and the move arrow directions are reversed. Is there anything I can do to fix this?
I have worked around this by setting “positive_direction: false” under homing for the X and Y axes, and inverting (“:low”) the direction pin for each motor on these axes.
This makes the machine’s coordinate system match what Lightburn thinks it is, but is less than ideal as a solution because it means I have to run different configs for my laser and CNC spindle, which means I have to re-probe to process with one and then the other.
