[spencoid]

I recently got ripped off by taking remote delivery of a cute little Sherline CNC retrofit. The seller (who I never met) was supposed to provide docs etc but just took my money. I got the mill working but just blew it up a little tying to straighten out the wiring mess that would have blown up on its own if i didn't do it first. I have no idea who made the 4 axis bipolar stepper driver board. it seems to be a chopper and maybe microstepping. my guess is that it is 10 to 15 years old???i need to identify it so i can figure out a few switch lines. some lines were jumped together and i accidentally lost track of which ones were. there is no identification on the silk screen or the copper on either side of the board.