1.I have a existing DC motor on a shaft with encoder wheel and optical sensor has its own controller.
2. I want to use the counters from optical sensor to control a motor that mimics the dc motor
3.I wanted to have the adifruit motor shield v2 to control the motors via m1 to m4 outputs
4. too keep it simple I just needed help to get one stepper to work via motor shield following the steps the optical encoder counts
5. I eventually would like to stack the motor shields 6 high controlling 11 steppers but if i cant get just one to mimic the encoder/DC motor there will be no point going further with it.