I'm designing a round knob positioned by a stepper. The knob is intended move by an external force while positioned by the stepper. I'd like the stepper to release (power off) when the knob is manually turned.
Is there a way to sense the application of external force via the stepper drivers ie a current sense ?
I know there is a current spike when the stepper position stalls. I'm unsure whether the current spikes when already positioned and the position manually moved.