I bought the HobbyCNC PRO board, which is the 7078. I have the schematic for it - very straightforward, and some extra 7078 chips. I don't have a table running yet, but the plan is to get it running, then use the extra (currently unpopulated) 4th axis on the HCNC board to do some breadboarding to figure out what I want. I have an unfinished schematic of 'my' board, but it's still in a state of flux as I learn more about cnc systems. But I would also like to do a higher power bipolar board.
Gary |