1. Got a question or need help troubleshooting? Post to the troubleshooting forum or Search the forums!

Answered Issue homing axes, x axis doesn't stop and grinds

Discussion in 'Troubleshooting' started by Jcastor, Nov 29, 2015.

  1. Jcastor

    Jcastor New Member

    Joined:
    May 21, 2014
    Messages:
    26
    Likes Received:
    0
    My printer has been out of commission for a little while due to a broken power supply. I worked this morning replacing my filament and had to remove the hot end due to filament stuck inside. It's all back together now, but when I ran G28 to home axes, the x axis crashed into the side of the machine and kept grinding. I had ran the same command before replacing my filament and it worked. I also tried using the MatterControl controls and ran the X axis and press the limit switch and it stopped the printer. Not sure why the printer didn't stop when it hit the x axis limit switch when running G28. Any ideas?

    Thank you,

    Jim
     
  2. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,277
    Send M119 in terminal with the switch engaged.

    Check all your wiring
     
  3. Jcastor

    Jcastor New Member

    Joined:
    May 21, 2014
    Messages:
    26
    Likes Received:
    0
    I received the following
    <-Reporting endtop status
    <-x_min:TRIGGERED

    Y and Z were open because I didn't engage them. The limit switch seems to be working and is connected when I checked.
     
  4. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,277
    So does it hit the endstop and grind or what?
     
  5. Jcastor

    Jcastor New Member

    Joined:
    May 21, 2014
    Messages:
    26
    Likes Received:
    0
    Yes it is hitting the end stop and grinding until I turn it off.
     
  6. Jcastor

    Jcastor New Member

    Joined:
    May 21, 2014
    Messages:
    26
    Likes Received:
    0
    There are a couple of other things I changed too, but didn't think it would have impacted this.
    1. I changed my Start G-Code in MatterControl to:
    G1 Z5 F5000 ; lift Z by 5mm
    G28 ; home all axes
    M565 Z-1.1; set the offset for auto-leveling mechanism
    G29 ; run auto-level
    M300 S440 P200 ;A4: 440
    G0 Z5

    2. I disabled auto leveling in MatterControl (attached screen shot)
     

    Attached Files:

  7. Mike Kelly

    Mike Kelly Volunteer

    Joined:
    Mar 11, 2013
    Messages:
    6,967
    Likes Received:
    2,277
    if you manually trigger the switch when it gets home does it finish homing correctly?
     
  8. Jcastor

    Jcastor New Member

    Joined:
    May 21, 2014
    Messages:
    26
    Likes Received:
    0
    I trigger the limit switch before it got to the x axis stop and it did finish the homing, but off center of course. Then I ran G28 again and it finished properly, go figure. Not sure what was wrong, but it is running a print now.

    The biggest problem I have now is it smashing the first layer on the bed too much. I have had a hard time in the past getting the Z offset set properly.
    Should I change the following line in my Start G-Code, make it more negative?
    M565 Z-1.1; set the offset for auto-leveling mechanism

    Thanks for your help Mike.
     
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    More negative -> further from bed so increase the Z offset to a larger negative number.
     

Share This Page