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Printer bed and Extruder crashing

Discussion in 'Troubleshooting' started by Alvin Jacob, Oct 2, 2019.

  1. Alvin Jacob

    Alvin Jacob New Member

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    Hi,

    The issue started today, on giving the command for fine-tune settings from the LCD screen, the auto-leveling is done. But then the bed goes down to its 0 zero position and then when it comes back on top it clashes with the extruder and doesn't stop!!.

    The IR sensor is blinking when I place my finger underneath. So I guess thats, not the problem.

    Please help!!
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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  3. tkoco

    tkoco Administrator
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    Will need more information. When you did the Z Offset wizard, what was the distance displayed upon finishing the wizard?
    Are you still using the factory hot-end?
     
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  4. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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  5. Geof

    Geof Volunteer Moderator
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    Bed crashing into the nozzle = ir sensor not actuated, if your offset is less than the min read distance in the IR firmware settings it seems to ignore it and thus crashes into the hot end
     
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Also, the color of the bed surface matters (on the C2 at least it does). If you change it from black, leveling will just no longer work correctly. I even had to go find black painters tape for that very reason ;)
     
  7. tkoco

    tkoco Administrator
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    I am presuming that @Alvin Jacob has a relatively new R2 printer and is not the sophisticated 3D printing guru like @WheresWaldo , @Geof or @mark tomlinson . (A Tip of the hat to you gents).

    @Alvin Jacob , have you tried using the bed leveling procedure posted to the beginning of this Troubleshooting area?

    Just a point of interest, I noticed that after changing the hot-end of my R2 printer, the Octoprint parameters still showed the old Z offset instead of the newly calibrated Z Offset. I'm wondering if that might be a factor in some of the head crash threads posted here. A simple reload of the EEprom parameters fixed it.

    Possibilities:
    IR sensor malfunctioning as suggested by @Geof
    A bad build plate surface as suggested by @mark tomlinson
    A SDCard corruption of the software due to improper power off
    An Octoprint error as suggested by myself
    A Z axis end stop sensor coming loose.
    A Marlin firmware parameter corruption
     
    #7 tkoco, Oct 18, 2019 at 12:52 PM
    Last edited: Oct 18, 2019 at 1:38 PM
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  8. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Hopefully he is still listening :)

    Alvin Jacob was last seen: Oct 3, 2019
     
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  10. Alvin Jacob

    Alvin Jacob New Member

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    Many thanks for the responses, Unfortunately, I had to stop working on the R2 printer presuming the crash.

    @tkoco
    "Just a point of interest, I noticed that after changing the hot-end of my R2 printer, the Octoprint parameters still showed the old Z offset instead of the newly calibrated Z Offset. I'm wondering if that might be a factor in some of the head crash threads posted here. A simple reload of the EEprom parameters fixed it."

    Yes, that's right, it does do this sometimes. The trial and error method is not the go-to method at the current age of technological advancement. It's really a pain.
     
  11. Alvin Jacob

    Alvin Jacob New Member

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    Still Listening!!
     
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  12. Alvin Jacob

    Alvin Jacob New Member

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  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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  14. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    Usually if old settings are remembered it is because they are stored in the Printer Mainboard EEPROM, after setting it make sure you store the new settings using the M500 command from the terminal screen.

    http://marlinfw.org/docs/gcode/M500.html
     

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