Im currently using a GS D200S driver in my stepper motor circuit, but am having troubles. Ive got a driver hooked up on vero with a test signal from a 555 timer, and although my motor becomes energised, it is not stepping. I have the enable pin connected to a button which I release upon power up, but have other pins floating. Have tried the circuit with reset tied high, with no success....what am I doing wrong here? please help!