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Partial Answer print not original shape in z axis

Discussion in 'Troubleshooting' started by xfire_dragonx, Nov 8, 2018.

  1. xfire_dragonx

    xfire_dragonx Member

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    Since i got my printer even on the smart discount lcd the auto home worked, and yes it centers to the middle of the printer, i would disable the motors through the lcd and manually move my head and bed to the home position. auto home is my way of a printer check before i print.
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Ah, OK it may not be actual home then just something the LCD menu is configured for.
    Actual HOME is not the center just to be clear :)
     
    Geof likes this.
  3. xfire_dragonx

    xfire_dragonx Member

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    I Know home is left corner, but the controller auto home function as stated doesn't work. As mentioned with being in direct connection to cura or matter control without the lcd Z axis doesn't work.
     
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    OK, nothing I can help you with there as I don't use either of those for host programs.
    Generic advice is all I'll be able to add :)
     
  5. xfire_dragonx

    xfire_dragonx Member

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    still trying to figure this out, I asked about the z axis motors I spin the left side by hand no power and the right spins. is there a belt that connects the 2 axis?

    Also had my printer directly connected to the cura software. the x/y homing works (top left corner), The z axis worked in 1 mm increments.

    Z axis homing through the software didn't work.
     
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    No, but they are effectively wired together (in parallel) and when you spin that type of DC motor it becomes a generator :)
    (I think you see where I am going with that, it not look here: https://en.wikipedia.org/wiki/Brushed_DC_electric_motor "If the shaft of a DC motor is turned by an external force, the motor will act like a generator")
     
  7. xfire_dragonx

    xfire_dragonx Member

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    the machine homes x/y no problem, when the machine halted at the z axis homing I had the end stops disconnected.

    The z axis rods do not spin, when I touch the wires together the z axis cycle stops. the issue has to do with the end stops or firmware
     
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    ? The endstops for the Z are 'backwards' in that they are normally "open" and when CLOSED they indicate HOME. They are kept "open" because the crossbar sits on them and then when it lifts one (or both) will go closed (indicating "home")
    I am confused as to exactly what you are doing with the endstops.
    Maybe pictures or a video?
     
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It might be something as simple as needing to mark the Z axis as inverted in the firmware.
     
  10. xfire_dragonx

    xfire_dragonx Member

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    changed both to false:
    const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.//robo

    #define INVERT_Z_DIR false // for Mendel set to false, for Orca set to true


    1 step forward, no power humm, but the head doesn't home to the bed?
     
    #70 xfire_dragonx, Jan 14, 2019
    Last edited: Jan 14, 2019
  11. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    What is this set to?

    // ENDSTOP SETTINGS:
    // Sets direction of endstops when homing; 1=MAX, -1=MIN
    #define X_HOME_DIR -1
     
  12. xfire_dragonx

    xfire_dragonx Member

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    // ENDSTOP SETTINGS:
    // Sets direction of endstops when homing; 1=MAX, -1=MIN
    #define X_HOME_DIR -1
    #define Y_HOME_DIR -1
    #define Z_HOME_DIR -1

    #define min_software_endstops false // If true, axis won't move to coordinates less than HOME_POS. //robo
    #define max_software_endstops true // If true, axis won't move to coordinates greater than the defined lengths below.
     
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That should be:

    #define INVERT_Z_DIR true // for Mendel set to false, for Orca set to true

    For a stock R1/R1+
     
  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    The sensors are "inverted" in how they react, but the axis is still up for up and down for down

    the C2 has an inverted Z axis (and the R2 I imagine) since down is up :)
     
  15. xfire_dragonx

    xfire_dragonx Member

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    changed this to #define INVERT_Z_DIR true // for Mendel set to false, for Orca set to true.

    Printer test: The head goes to the center of the bed for the z axis and goes up a few mm.

     
  16. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    So if you home this from software (such as say MatterControl or Cura, etc) does it home correctly (front-left and axis at zero)?
    It is only the LCD misbehaving?

    (thread has gotten long and I am not re-reading it from the start) :)
     
  17. xfire_dragonx

    xfire_dragonx Member

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    I tested in cura. the x/y home works ( top left corner). z axis does the same thing in cura, used gcode command line in cura. G 28 works on the x/y. G29 moves the z axis to the center then goes up a few mm, same as video.
     
  18. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    Is the G28 line all by itself or is it G28 X Y?

    If Z only moves up do a M119 after homing with G28.

    Report results.
     
  19. xfire_dragonx

    xfire_dragonx Member

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    This is what i get:
    M119
    SENDING:M119
    Reporting endstop status
    x_min: TRIGGERED
    y_min: TRIGGERED
    z_min: open

    the G29 works to a degree,
     
    #79 xfire_dragonx, Jan 18, 2019
    Last edited: Jan 18, 2019
  20. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    If you issue a G1 Z0 then an M119 does z_min change to triggered?
     

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