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Unresolved Robo 3d R1 Stepper motor clicking

Discussion in 'Troubleshooting' started by fsnuffer, Jul 27, 2020.

  1. fsnuffer

    fsnuffer New Member

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    I have been reading and people recommend replacing the stepper controller or the motor. I have attached a video of the Z axis motor clicking. Any suggestions?


    Edit: They won't let me post a file yet. Basically the stepper motor periodically "clicks" and jumps back a fraction. Happens more on long runs.
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Clicking/grinding of a stepper is usually because it is dropping steps.
    That can be because:
    1) The stepper driver is not supplying enough current to make the stepper motor step
    2) The stepper motor is bad

    Usually I say replace the small stepper driver card on the RAMPS board that drives the stepper motor (the R1 used a single stepper driver for the Z just like most other Cartesian printers) but the R1+ used two.

    This the layout on the RAMPS for the R1:

    RAMPS Wiring Robo.jpg

    This is the top of the RAMPS and you can see which of the stepper drivers is labeled "Z"
    Replace that one with a new one OR try adjusting the the current if you feel up to it (they are cheap and I don't waste my time) -- they look like this

    Stepper drivers.jpg

    RAMPS_top.jpg
     
    #2 mark tomlinson, Jul 27, 2020
    Last edited: Jul 27, 2020
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Make sure that the heatsink has not fallen off of the Z driver board... that can happen and if it does the driver will limit the current automatically :)
     

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