Has this been brought to the attention of the group yet? http://www.dakeng.com/u2.html It's a PIC 16F84 along with the Assembler code to convert standard TTL step and direction signals to the phase signals used by a unipolar stepper motor for two axes. 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] PIC stepper controller for drilling station
2005-06-17 by Robert Hedan