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Solved calibrate robo r1 extruder with flexon extruder

Discussion in 'Troubleshooting' started by oldfarmhand, Mar 5, 2017.

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  1. oldfarmhand

    oldfarmhand Member

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    Hi I have a robo r1 2015 model and with the flexon extruder installed and im not sure how to calibrate the extruder (its feeding too much material) ive watched tom's guide but he talks g code not not anything a bout e
    I know how to check it but not where you make the actual calibration numbers ive watched a lot of videos but cant find videos on robo 3d. most videos talk about going into the config files to make the adjustments where are they at in the marlin firmware
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    You tell it to extrude 100mm and measure how much it actually extrudes. Then use this math:

    (eSteps) * 100mm/ActualExtrudedLength)

    Then adjust the eSteps to the new value.
    For an R1 the original value of eSteps is: 723.38

    See the line in configuration.h:

    // default settings
    #define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,800,723.38} // default steps per unit for RoBo 3D R1


    Change the value to your new calculated one and reload the firmware.

    If you told it to extrude 100mm and it really extruded 110mm then it would be like this:

    723.38*(100/110) = 657.62

    Change your eSteps to that new value.


    EDIT: corrected example numbers...
     
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  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    AND remember that the amount of filament extruded is measured on the input to the extruder, not what gets extruded.
     
  4. oldfarmhand

    oldfarmhand Member

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    Thanks Mark you are always a lot of help
     
  5. oldfarmhand

    oldfarmhand Member

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    Not trying to give you the big head but because of you is why I bought a second robo r1 plus
     
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  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Too late :)

    Seriously though, glad to help. We do have a pretty good community here. Heck we even get folks with non-Robos trying to get the forum to assist every now and then. It is great to have a strong maker community -- we all win.
     
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  7. oldfarmhand

    oldfarmhand Member

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    Im sorry I do have one more question on this:
    If I make changes on this printer will it affect my second printer calibration because I run both printers with the same pc both are tethered to it
     
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    No, if you actually edit the firmware you are only going to affect the one you reload the firmware into.
    To be safe disconnect one while you load the firmware to the other.

    No way to mess it up then :)
     
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