Homing Issues - Youtube Video

Discussion in 'Calibration, Help, and Troubleshooting' started by 3DDP, Nov 19, 2016.

  1. 3DDP

    3DDP Well-Known Member

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    Current issues... making progress, Thermistor/PT100 issue fixed, IR issue fixed, Stepper driver issue fixed, now homing....

     
  2. Kanedias

    Kanedias Well-Known Member

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    Can you post a picture of how your rumba is wired?

    Can you move all axis from the menu screen? There doesn't seem to be any movement on the Y during that autohome.
     
  3. 3DDP

    3DDP Well-Known Member

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    It was already against the endStop for the Y.
     
  4. 3DDP

    3DDP Well-Known Member

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    Second Homing after the Calibration of X axis cut from 160mm to 80mm. X moves correctly.

     
  5. Kanedias

    Kanedias Well-Known Member

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    Then it should move away from the endstop, trigger it and then move to somewhere close to the middle of the bed on the y axis, about 85 from memory.

    Good lord that sounds awful. The z stepper can't be getting the right current/voltage if it's stuttering like that.
     
  6. 3DDP

    3DDP Well-Known Member

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  7. 3DDP

    3DDP Well-Known Member

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    My motors wouldn't work on the .55 - .6v recommended, they move smoothly on .05V (same multi meter settings, and smoked my stock Z stepper)
     
  8. Kanedias

    Kanedias Well-Known Member

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    Except your Z is not moving smoothly, Y is not moving at all and I wonder if you apply any resistance to the X carriage does the stepper stall.

    Looking at that picture of your rumba, why is the X motor cable the opposite way round?
     
  9. 3DDP

    3DDP Well-Known Member

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    So the X axis will move right direction to the X offset
     
  10. Kanedias

    Kanedias Well-Known Member

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    I don't understand that but maybe it's a dual extruder thing.

    Can you link the part of the build guide that covers the X axis offset calibration you're talking about?
     
  11. 3DDP

    3DDP Well-Known Member

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    3rd Calibration



    So far, Voltage on steppers is about .05-.1V, X axis needed to be reversed to move correct direction during homing. X Steps per mm needed to be cut in half, and Y steps per mm needed to be doubled... ALL goes against instructions.... Only thing that worked per instructions was dropping the Z axis steps per mm to 800 with the new lead screws.
     
  12. 3DDP

    3DDP Well-Known Member

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    it wasn't a link it was posted in the forum chat to reverse it, and that software in S3D was doing it.
     
  13. Kanedias

    Kanedias Well-Known Member

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    The z steppers are 1.8 degree, different to the .9 degrees X and y steppers. You haven't got the them the wrong way round by any chance?
     
  14. 3DDP

    3DDP Well-Known Member

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    as soon as I reversed my X axis motor cable, it moved and homed perfectly. Unknown reason.
     

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