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GRBL 1.1 x axis calibration

Discussion in 'OpenBuilds Forum Help' started by GraemeGoode, Mar 4, 2021.

  1. GraemeGoode

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    Hi All

    I recently reflashed my uno board with 1.1.... after calibrating Z and Y axis i went onto X - it only moves 14mm even after putting in the adjusted measurement in Openbuilds calibration wizard... all other axis work perfectly. X axis jogs fine as well...

    Thanks!
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Soft limits turned on, and forgot to Home so soft limits knows where it can go?
     
  3. GraemeGoode

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    soft limits aren't turned on - the other axis calibrate perfectly without this happening. Thanks!
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Initial steps per mm value at least in the ballpark? If its very far, its hard to use as a starting point. Use the calculators in CONTROL > Grbl Settings next to the $100-102 fields
     
  5. GraemeGoode

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    So the strange thing is it was working before I did a recalibration of all the axis. I'm beginning to think this uno may have an issue
     
  6. sharmstr

    sharmstr OpenBuilds Team
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    Maybe typo when entering moved value in wizard?
     
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  7. GraemeGoode

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    It crossed my mind but I've done it too many times now and made sure it was correct. So strange.
     
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  8. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Paste your Grbl settings please. Grbl Settings > Backup Settings button on top toolbar.
     
  9. GraemeGoode

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    Will do - I'm not in front of the pc anymore - will do so when I'm back in the morning. Thanks Peter appreciate it.
     
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  10. GraemeGoode

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    Hi - here are the grbl settings

    >>> $$
    $0 = 10 (Step pulse time, microseconds)
    $1 = 25 (Step idle delay, milliseconds)
    $2 = 0 (Step pulse invert, mask)
    $3 = 5 (Step direction invert, mask)
    $4 = 0 (Invert step enable pin, boolean)
    $5 = 0 (Invert limit pins, boolean)
    $6 = 0 (Invert probe pin, boolean)
    $10 = 1 (Status report options, mask)
    $11 = 0.010 (Junction deviation, millimeters)
    $12 = 0.002 (Arc tolerance, millimeters)
    $13 = 0 (Report in inches, boolean)
    $20 = 0 (Soft limits enable, boolean)
    $21 = 0 (Hard limits enable, boolean)
    $22 = 0 (Homing cycle enable, boolean)
    $23 = 0 (Homing direction invert, mask)
    $24 = 25.000 (Homing locate feed rate, mm/min)
    $25 = 500.000 (Homing search seek rate, mm/min)
    $26 = 250 (Homing switch debounce delay, milliseconds)
    $27 = 1.000 (Homing switch pull-off distance, millimeters)
    $30 = 1000 (Maximum spindle speed, RPM)
    $31 = 0 (Minimum spindle speed, RPM)
    $32 = 1 (Laser-mode enable, boolean)
    $100 = 250.000 (X-axis travel resolution, step/mm)
    $101 = 250.000 (Y-axis travel resolution, step/mm)
    $102 = 250.000 (Z-axis travel resolution, step/mm)
    $110 = 3000.000 (X-axis maximum rate, mm/min)
    $111 = 2500.000 (Y-axis maximum rate, mm/min)
    $112 = 2500.000 (Z-axis maximum rate, mm/min)
    $120 = 320.000 (X-axis acceleration, mm/sec^2)
    $121 = 320.000 (Y-axis acceleration, mm/sec^2)
    $122 = 320.000 (Z-axis acceleration, mm/sec^2)
    $130 = 1200.000 (X-axis maximum travel, millimeters)
    $131 = 1200.000 (Y-axis maximum travel, millimeters)
    $132 = 100.000 (Z-axis maximum travel, millimeters)
    ok
     
  11. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    And what kind of machine is it again?
     
  12. GraemeGoode

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    It's a 1500x1500 workbee with 2.2kw water cooled spindle. I calibrated it using 10mm travel and got it spot on... It won't do the 100mm travel option.
     
  13. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Standard steps per mm for TR8*2 screw, 1.8deg motors and 1/8th microstepping is +-200
     
  14. GraemeGoode

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    Correct - I recalibrated using the 10mm travel and seems to have sorted it for now. Thanks for your assistance!
     
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  15. David the swarfer

    David the swarfer OpenBuilds Team
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    Code:
    $110 = 3000.000 (X-axis maximum rate, mm/min)
    $111 = 2500.000 (Y-axis maximum rate, mm/min)
    $112 = 2500.000 (Z-axis maximum rate, mm/min)
    
    X is trying to go faster, maybe it is stalling?
     
  16. JustinTime

    JustinTime Veteran
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    In your OP you said you are using the "Openbuilds calibration wizard". That wizard will do any distance that you want. You just have to entre the distance. The number you see when you open the wizard is just a suggestion and not cast in stone. You can overwrite it.
     
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  17. GraemeGoode

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    Hi David I did slow it down and it did the same. Thanks!
     
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  18. GraemeGoode

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    Hi - just an update - i downloaded and installed the latest version of the openbuilds control software - sorted the issue out. thanks to all that responded.
     

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