![]() ![]() No resistors used but you may choose to add them, depending on your motor supply and LED voltage LED’s to indicate Running (and Back EMF for hand-turning test) Delete corner Mount holes, Silkscreen…etc, as desired.This is Single-Layer design (to facilitate easier HomeMade PCB making.Has added Heat-Sinking copper under the chip (attached to the 4 GND pins - Can delete if not wanted).One circuit per motor (I use NEMA-17 motors).The Combo version has both connector styles - delete the ones you don’t want (can delete the Traces to them) ![]() Three Circuits but all are the same except for Connector type and locations.But, they appear to have equivalent pins so, I suspect either can be dropped into this circuit (pinout image attached at end) I have only used SN754410 chips and have not used the L293D chips. It’s not really a ‘Part’ but, it can be Copied&Pasted into another circuit…_ This is the Motor Circuit I use for Stepper Motors ![]()
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