Hi I'm using the 212.
I connected ports 9 (step pulse) and 10 (common) to a function generator at 10 Hz and 5 Volts.
My stepper motor moves but I want it to also move in the other direction.
I don't know where to connect the direction port to. I have a variable DC power supply. I tried giving the direction a voltage but it doesn't seem to do anything.
Help!