how adjust Calibration of Steps/mm

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  • July 12, 2016 at 11:37 pm #9838
    alhaddar
    Member

    Hi I have tinyg v8

    how adjust Calibration of Steps/mm

    What is the equation for calibration
    Because I have a problem in the calibration if you give something to go 20 mm it goes to only 18 mm

    July 18, 2016 at 5:14 am #9846
    cmcgrath5035
    Moderator

    You need to adjust the value of $_tr for each axis to match the mechanics of your machine.
    See

    The steps-per-revolution is a physical property of the stepper motor (it’s design). 200 steps per revolution is most typical. In tinyG, the step-angle parameter sets this; $_sa=360/(steps-per-revolution)

    The distance moved in one step is determined by the mechanics of your machine – pulley diameter and teeth, plus belt tooth pitch, or threads pitch in a screw machine.

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