$27 = 1.000 (Homing switch pull-off distance, millimeters) $26 = 250 (Homing switch debounce delay, milliseconds) $24 = 100.000 (Homing locate feed rate, mm/min) $11 = 0.010 (Junction deviation, millimeters) Added homing with limit switch at the TOP of the z-axis gantry, inverted Z movements in GRBL so that the laser head moving DOWN shows positive numbers only (which I also corrected in Lightburn checking “reverse Z direction” to allow consistency with icons in the user interface).After homing I have forced machine coordinates to zero.Together with the z-axis I also installed limit switches (2 on X and Y axes and 1 on Z axis) and uploaded a custom GRLB 1.1h to adapt it to Lightburn requirements, namely:
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