Thanks David, But the 3967 and 3977 are designed for bipolar steppers. I've requested a sample of 3967 for testing on another application, but they don't help me with my unipolar steppers. Robert :) Allegro says they have replaced it with the 3967 and 3977. David 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] Stepper motor controller/driver IC, was Unipolar stepper motor driver wiring
2005-06-22 by Robert Hedan