Please please please ....
Mariss,
I ,for one, would be very grateful if you could post a drawing of your circuit. As the owner of a couple manual machines and several dozen steppers, power feed has been on my to-do list for years but I haven't ran across a simple pulse generator with accel/deaccel. And with even cheapo power feeds selling for a couple hundred dollars, I think there are a lot of other folks who would also be interested. And if your feeling too lazy for a print, maybe just a quick description of how it works...
Just don't spend too much time away from designing your GREAT products!
Brent
If it's already been done, then it ain't NO FUN!