Darn, It seems the circuit I had for unipolar steppers can be wired for bipolar steppers as well. I found a copy of it here, but there's just one problem: Figure 9.1: http://eio.com/jasstep.htm#translators "I think when you reverse direction and continue stepping, the motor will advance 1 more step in the previous direction it was going before responding." Ugh... Robert :( Be sure to visit the group home and check for new Links, Files, and Photos: http://groups.yahoo.com/group/Homebrew_PCBs If Files or Photos are running short of space, post them here: http://groups.yahoo.com/group/Homebrew_PCBs_Archives/ Yahoo! Groups Links
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[Homebrew_PCBs] Drilling station steppers, bipolar driver circuit
2005-06-22 by Robert Hedan