I am looking at the feasibility of triggering a stepper motor by manually applying some torque on it. My use case would typically be for a motorized curtains system using a timing belt, where slightly pulling on the curtain would trigger the motorized closing/opening.
I am using a Nema17 with an A4988/TMC2209 driver. Although the TMC2209 has some stall detection capabilities, they only work above a certain speed (which is not zero).
Is there any possible approach to the problem ?