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Unresolved X and Y origins out of whack

Discussion in 'Troubleshooting' started by David Lockwood, Oct 6, 2016.

  1. David Lockwood

    David Lockwood Member

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    Recently my R1+ has developed a distressing character flaw. Both the X and Y axes are about 20 mm (or more) from where the should be. When I do a G28 then a G29 both the X and Y hit the end stops and grind, The print then starts higher (in index number) then center on the bed. My question...do I correct this with X and Y offsets in S3D or is this an issue for the configuration file?
     
    #1 David Lockwood, Oct 6, 2016
  2. Geof

    Geof Volunteer Moderator
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    Did this occur out of the blue or have you dont firmware changes then it happened ?
     
    #2 Geof, Oct 6, 2016
  3. David Lockwood

    David Lockwood Member

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    I did do a PID calibration several months ago but this is more recent ... has come out of the blue.
     
    #3 David Lockwood, Oct 6, 2016
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That has to be the home switches.
    The HOME switches are the only position sensors the Robo has. When you tell it to go home it drives until the switches are tripped.
     
    #4 mark tomlinson, Oct 6, 2016
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  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Either the switch itself is not working correctly or the wires from the endstop to the RAMPS is loose/disconnected.
     
    #5 mark tomlinson, Oct 6, 2016
  6. David Lockwood

    David Lockwood Member

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    And where, pray tell, are the "home switches?"
     
    #6 David Lockwood, Oct 6, 2016
  7. Geof

    Geof Volunteer Moderator
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    When the switch goes home the bolt presses a switch bolted to the black plastic on the lead screw on the left for x. Under the bed bolted to the middle plate is the location for y.
     
    #7 Geof, Oct 6, 2016
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    The small black micro-switches
    Here is a picture of the Z one (there are two one on each side -- even the X and Y switches are identical looking)


    GoodPositionOfZBracket.jpg

    The X is to the side of the carriage you can see it in this pic:

    20161006_141641.jpg


    The Y is under the bed. Sorry, no photo lift the bed and you will see it.
     
    #8 mark tomlinson, Oct 6, 2016
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  9. David Lockwood

    David Lockwood Member

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    Many thanks. The photos are a big help.
     
    #9 David Lockwood, Oct 6, 2016
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