The title of my project is " controlling stepper motor with RF " (with using microcontrollers)
My stepper motor has 6 wires : two brown(common power wires),yellow,red,blue and white
(Identify the wires to the coils by supplying a voltage on the common power wires and keep one of the other wires grounded while grounding each of the remaining three wires in turn and observing the results...)
You can get some ideas from my web page **broken link removed** Briefly, I use a 12c508 cheap little PIC processor to drive the small 6 wire stepper. There are two variants: one with up/down push buttons and the other with an RS232 connection (I like that one better)