External accessories causing background interference
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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
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Separate stepper motor wiring from spindle wiring.
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Alternatively, you can ground your stepper motor and/or homing switch wiring following this forum thread
Homing switches trip during a job
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Disconnect homing switches from the gshield and go through setup again, selecting "No, disable homing".
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Run the job again
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If the problem persists, re-connect the homing switches and go through setup again, enabling homing.
Associated Symptoms
- Stepper Motors move in random directions
- Machine stops carving