I'm leaning towards a Cambell Designs breakout board, and MACH3 software. There is a knob on the front of my unit for speed control. It seems to work just fine.

I'm thinking that I will just add the breakout box and tap into the DB25 connector to run the X, Y, and Z. I'm going to try to get it running so I can cut phenalic tags for my electrical panel shop first.

I'll try to post some pictures of my unit later.

If anyone has it available I would really appreciate a pinout diagram of the DB-25 connector on the rear of the machine.

Thanks,
Stan