Stepper problem

[JAZZCNC]

bi polar parallel wants more juice,
you need a 15 amp 36 volt psu
why don't you run them at a higher res?

No he doesn't need that high a supply. He'll never pull any where near that amount of current in normal use. More volts would help increase speed but it wouldn't cause this problem provided they are wired correctly.

Like wise running with a Higher Res or micro stepping being the correct term would only make the matter worse if he's struggling with pulses or the PP has it would require many times more pulses and work for the parallel port.
If he was running at Full step then yes but 1/8 is fine and just about what I'd recommend.

I'll wire only three motors and see what comes out. i'll post pictures/videos if I can.

Just start with one motor then test and see what happens.
Don't bother with wiring in series as you'll need even more volts to get speed. Keep with parallel and set the current setting to match the drive rating.
You do however have a miss match with the motors because those 4 wire motors are most likely series wound motors so will stall a lot sooner up the speed curve than the parallel wired ones with the same voltage.


To test the cable you need a continuity meter or meter set to Ohm's just like for testing phases. Probe pin1 at one end and at the other check it against the others. You should only get a reading between same pins # at each end with no crossover between pins.