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Author Topic: Z-Axis not working on Printrbot  (Read 1817 times)

Kevin

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Z-Axis not working on Printrbot
« on: July 10, 2012, 12:39:30 AM »
I just finished building the Printrbot LC.  I installed the drivers and software, and have been able to get the X and Y axes to move, home, etc.  However, the Z axis does not appear to move.  If I press any of the Z buttons in pronterface, I can hear/feel the vibrations of both of the two motors, but the threaded rods are not moving.  If I decouple the threaded rods, leaving just the motors, I still feel / hear the internal vibrations, but the motor still does not spin.  I turned off the printer, unplugged it, waited a few minutes, then disconnected and then reconnected the Z-axis wires to the PCB, but still no luck.

Any thoughts on how to further diagnose and/or troubleshoot this issue?

I'm wondering how often people have run into bad stepper motors, because it seems like I've run into more than my fair share!  :-\

Thanks,
Kevin

Chorca

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Re: Z-Axis not working on Printrbot
« Reply #1 on: July 10, 2012, 02:23:43 AM »
Check your stepper wires to make sure one pair isn't reversed or disconnected.. If they are both hooked up properly, try turning the current up on the stepper driver slowly while running it to see if it starts moving.

Simply7

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Re: Z-Axis not working on Printrbot
« Reply #2 on: July 10, 2012, 12:20:36 PM »
I had the very same problem. Under no load the motor would make noise and occasionally step forward and then backwards. Turns out I had it wired incorrectly. 

Kevin

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Re: Z-Axis not working on Printrbot
« Reply #3 on: July 23, 2012, 08:17:49 PM »
I finally got around to connecting the motor to an arduino and an ez stepper driver that I have, and it works fine with that combo, so I'm thinking maybe it's a power / amp issue.  Apparently, the LC Plus was supposed to ship with a "Y Power Adapter", that I didn't receive ... waiting for it ... no patience.  Anyone any good at crimping wires together? :)