[b_cybe]

Last summer I buildt three picsteps and one 4 axis interface from pminmo site. At the time 2 of them were working, the third one only "shaked" the motor. Didn't had the time then to proper debug it (summer holiday had ended...).
This summer holiday I have worked more with my cnc plans and therefore started debuging the faulty picstep. To my big surprise I found out that one of those LMD chips werent a LMD chip but had the code "LM4656" stamped on it (must have received one wrong chip amongst the 6 I ordered), I therefore thought this to be the problem and reordered one new LMD chip.
Received this today and soldered it to the picstep board. Checked for shorts and then fired up the picstep. But is still does not work. Did some further testing but couldn't find a fault or short. Tested the AC voltage to the motors from the two LMD chips but those were close to zero. Since I think it is doubtfully that both LMD chips are faulty I thought that maybe the fault was the microcontroller and swapped it for a confirmed working microcontroller. Still didn't do it, I am wondering if it can be something wrong with the resonator? Would apreciate some thought on what the problem(s) could be!

[pminmo]

Do the motors lock up? Are you setting the enable?

[b_cybe]

The motor does lock up when I connect the picstep to the 4 axis interface.
I am pretty sure I have done the enable setting correctly since it works with the two others pictstep (first connected a working picstep to the x axis connection on the interface and that worked, then i connected the faulty picstep to the same x axis connection and then it doesn't work)

[pminmo]

If it locks up, your micro is most likely running. You can test the board by itself by not connecting it to the interface, jumper pin 1 enable to ground, and taking a wire connecting it to the step pin and momentarily touching it to ground and opening it. That should cause the motor to rotate, each time you touch and open the wire. It's won't be smooth, but would tell you if the picstep itself is resonding to step pulses.

[b_cybe]

Hmm, I tried it but didn't work, to double check I tried it on a working picstep but didn't get any response on that either. Should I also provide the 5V to the microcontroller?
What I did was applying a wire to pin 1 of the picstep (top right pin) and then connecting a wire from pin 5 of picstep (top middle pin) and touching it to ground and open again.

[pminmo]

Pin 1 needs to be grounded, pin 5 you have correct, and you have to provide 5V to pin 9 and a 5V return to either pin 7 or any of the even pins.