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Solved Auto Cal Issue on Y-Axis

Discussion in 'Troubleshooting' started by Johnny Yuen, Aug 3, 2015.

  1. Johnny Yuen

    Johnny Yuen New Member

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    Hello all,

    I was wondering if you all could help me with an issue I've been having since I received the Robo. When I run the autocal before the print, the 7th out of the 9th probe would always grind because the y-axis (bed going foward) would always translate too far. I've tried multiple slicering program including Matter Control and Cura, but no luck. I've even tried changing the bed dimensions, but no luck either. Would this be a firmware issue on the Arduino side? Below is a video.



    Current Print Area:
    228 x 228 x 254 mm

    Gcode (MC):
    G28 X0 Y0 Z0 ; home all axes
    G1 Z5 F5000 ; lift nozzle
    M109 S[temperature] ; set the extruder temp and wait
    G28 X0 Y0 Z0; Home Z again in case there was filament on nozzle
    M565 Z0
    G29 ; probe the bed

    GCode (Cura):
    G28
    G92 E0 ;
    M565 Z-0.85 ;
    G1 Z5 F5000 ;
    G29 ;
     
    #1 Johnny Yuen, Aug 3, 2015
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

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    If it is grinding there are only two real options.
    1) the printer sizes are defined incorrectly
    2) something is blocking the travel.

    #1 is unlikely, but feel free to check it.
    #2 is common. Lift the bed plate (held down with magnets) and manually slide the Y axis stop to stop and look to see what is binding it.

    The cable bundle that runs to the bed heater is a common culprit. There are some other more esoteric causes for binding, but rule out the obvious ones first. Many folk print a cable snake to route that bundle with...I used zipties.
     
    #2 mark tomlinson, Aug 3, 2015
    Last edited: Aug 4, 2015
    Johnny Yuen likes this.
  3. Johnny Yuen

    Johnny Yuen New Member

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    It was the bed heater. Thanks Mark.
     
    #3 Johnny Yuen, Aug 3, 2015

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