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RUMBA skipping or missing steps

Discussion in 'RUMBA' started by Adam, Feb 20, 2015.

  1. Adam

    Adam New Member

    Oct 14, 2014
    I have been working with the Reprapdiscount RUMBA for the past 6 months now doing very extensive testing. After a lot of troubles with skipped or missed steps on prints I had gone through almost every possible component to eliminate the issue:
    - reducing the current on the stepper driver
    - changing from the A4988 stepper driver to the DRV8825 stepper driver
    - changing the cables
    - changing the stepper motor

    Finally, I have figured out what the problem was. There are defective stepper driver sockets on every RUMBA. On my first RUMBA board, it was on the X socket. On my second RUMBA board it was on the Y socket. If you replace the socket designation with any other available socket (say E1 or E2 in my case) it eliminates the problem.

    I have to say that I have been very pleased with my RUMBA board so far, but this problem and the fact that the support is non-existent makes me want to change to another board or supplier. I will try Geeetech's RUMBA board next to see if theirs are any better. Otherwise, I'm most likely going back to RAMPS.

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