Hmm, I'm having a hard time getting information on this whole back EMF situation.
Is it safe to assume that a stepper driver would have a back EMF protection for the voltage it is rated at?
For example, the A4988 can operate at up to 35V, would it mean that it won't budge if the motor (being manually spun) generates that kind of voltage?
If so, I could try and measure the voltage generated by the motor when it is back-driven as fast as it ever will in my application, and know whether it exceeds the limit? Or does it accumulate? The stepper driver would never be ON when the motor would spin freely, if that makes a difference.
If this makes sense so far, then would simply taking the voltage between A and Ā when I spin the motor be sufficient to give me a proper indication?
I'm sorry to keep pushing for this, I'm trying to get to know what I'm doing as much as possible, and to avoid burning boards in the process...