Quote Originally Posted by synchron View Post
hi there,
I'm new to the forums, i've searched a lot in the forums and i couldn't find anything related. I want to ask if trip current of the motor can be changed with a3977 ic on the fly. I want to use this card with a simple modification, i will connect a digital potentiometer and i want to raise the motor to the peak current whenever it will rotate. Else i want to lower the current for not to heat the motor excessively but also obtain a slight braking from the motor. If anybody tried to change the trip current on the fly please let me know.
You can modify Vref to alter motor current. I can't say I would recommend doing it while the motor is actually rotating though.