Geeetech

I have been working with this printer for a couple weeks, and have it mostly working. One of the biggest problems I am having is that one of my stepper motors (for the X tower) skips steps on occasion. What might cause this to happen?

It is most noticeable when I home the printer and the carriage is traveling up. The carriage will stop moving a vibrate for a few seconds before continuing up. The annoying part is that it will skip a step while printing, and so the print will be ruined.

I have adjusted the voltage up a little using the POTs on the stepper drivers. Can anyone tell me what I should be aiming for as far as voltage between the trim pot and the GND pin?

On another thread someone mentioned that the motors/platform should move easily if I try to move them with the machine powered off. Is this true?

Could my belts be too tight? All 3 towers are tensioned similarly but only the X tower is skipping.

flamtap

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"On another thread someone mentioned that the motors/platform should move easily if I try to move them with the machine powered off",yes, it's true.
And the stepper driver's current generaly ranges from 0.8-1.5A, you can adjust it but not too high or it will damage the motor.

Last night I noticed that the belt gear was very loose on that motor so I re-tightened that. I'll see if it helps.

the stepper driver's current generaly ranges from 0.8-1.5A

Ok, but I can't easily measure the current. Can anyone tell me their voltage which is working well?

When I get my new hotends hooked up I will see if tightening the gear made a difference.