phantomcow2,
I don't know what my future plans are with this drive, so I can only give you general details, hope that's OK. I put together a PIC 18F2331 chip with a National LMD18200 H-bridge driver. If you look on the market, you will find a commonly available drive board that uses these two components, but I can assure you, beyond that point, all similarities between my board and that one end. I saw what happened when someone began selling knock-off copies of Gecko stepper drivers, and I definitely don't ever travel down that road!
I have all the respect in the world for Marriss's and everyone else's design ideas. That pair of items, though just happened to be a winning combination for the size motors I have. I liked the 18F2331 because it has a quadrature encoder interface that updates way faster than I'll ever drive a servo motor, and I liked the LMD18200 because it has loads of protective measures, requires few external components, and is very easy to drive. One PWM signal, and a direction signal. Firmware was written in assembly language with MPLAB IDE, and board design was done with Eagle lite edition. Hope that gives you ideas like it did me!
Brian