Originally Posted by randyf1965 The motor I am using is a Mitsumi stepper from an old dot matrix printer. wires 1&2 are 10ohms and 3& 4 are 10 ohms.
I have tried wire 1 on a2out and wire 2 on a1out and 3&4 on b2out & b1out.
I have mach2 setup so the pulse count is low, it make what appears to be 2 steps clockwise then 2 steps counter clockwise |
Yes, it sounds very much like one coil is back-to-front. You have currently
1 - a2out
2 - a1out
3 - b2out
4 - b1out
Have you tried:-
1 - a1out
2 - a2out
3 - b2out
4 - b1out
Or one of your LMD's isn't working correctly so only one coil is being energized, but the fact that it's stepping on each pulse means it's likely to be a cabling issue.
Try all this in FULL step mode (eg all mode lines shorted to ground) before venturing into the microstepping modes.
Alan.