Hi there,

I've set up a basic 3-axis CNC using Arduino Due/GAUPS for a Tinyg setup.
I have 3 NEMA17 motors, 0.9deg per step, 1.7A.
I haven't done any setup to my GAUPS board, the motors are configured for full-steps. My Chinese A4988 driver chips have their current set to 0.85. I am powering this through a 24V power supply.

I am doing testing in Chillipeppr, and noticed that my Z-axis motor often suddenly halts, although it keeps on emitting the high-pitched noise for the duration that it should be spinning. It's as if an accelerating vehicle suddenly crashed into something.

My other two motors don't seem to be doing this. Any idea what could be the issue?

Thanks