I have just finished a cnc conversion of a Proxxon mf70 mill using an Audinio and stepper driver card.
The problem im having is that when i turn on the spindle motor the electromagnetic pulse is causing a hard stop to be triggered in GRBL.
I tried fitting sheilded cables etc with no success.
Does anyone have any tips on how to cure this as i have read that you can fit capacitors to solve it, just not sure how you go about it.
Cheers