Newbie question

Shop Forum Makelangelo Polargraph Art Robot Newbie question

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  • #11698
    Anonymous
    Inactive

    Where do I find instructions for calibrating a custom board size and pulleys?

    I’m using the latest firmware from MCR and a Adafruit V1 board. The only change I made was to the pulley size. I am using 6mm toothed belt and the pulley is about 0.97 cm diameter.

    When I go down ‘1’ unit, the pen moves 7mm down.

    When I go right ‘1’ unit the pen moves 13mm to the right. This is near the ‘origin’ where the distance to the top of the board is half the distance between motors. I think it is moving too much.

    #11699
    Dan
    Keymaster

    6mm wide belt.

    what is the distance between belt teeth? for example, if the belt it GT2 then it’s 2mm per tooth.

    how many teeth are on the pulley? the pulleys we get have 20.

    20 teeth * 2mm per tooth = 40mm circumference.

    40mm circumference / pi = ~12.7323954mm diameter.

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