Today i finished a stepper motor controller. It is a simple board made arround a AT89C2051 and 4 power transistor. I had some issues with the power supply (i need more current than it can give to me).
The design is simple: 1 pin for step, 1 pin for direction. On the todo list is to create a serial protocol in order to use it directly using commands.
So far it works with no problems but i need to create a PCB first in order to do more tests and add some safety features.