External accessories causing background interference
If using a vacuum, try running the job without it. Make sure to use a grounded vacuum hose to prevent a static charge build up. Running a copper wire through the hose and connecting it to an electric ground, as detailed in this forum post is an option as well.
Spindle wiring is interfering with stepper motor wiring
Separate stepper motor wiring from spindle wiring.
Alternatively, you can ground your stepper motor and/or homing switch wiring following this forum thread
Homing switches trip during a job
Disconnect homing switches from the gshield and go through setup again, selecting "No, disable homing".
Run the job again
If the problem persists, re-connect the homing switches and go through setup again, enabling homing.
- Stepper Motors move in random directions
- Machine stops carving