Question about configure polar printer.



  • Is polar's x-axis turntable?
    If it is turntable, should it be converted to steps/mm or steps/degree?

    M92 X80 Y80 Z4000 ; set axis steps/mm
    M92 E420:420 ; set extruder 0 and 1 steps/mm

    Knnn Geometry class, 7 = Polar

    Raaa:bbb Minimum and maximum radius in mm. If only one value it given it will be used as the maximum radius, and the minimum radius will be assumed to be zero.

    Hnnn Radius in mm at which the homing switch is triggered during a homing move. If this parameter is not present, the homing switch is assumed to trigger at the minimum radius.

    Fnnn Maximum turntable speed in degrees per second

    Annn Maximum turntable acceleration in degrees per second per second


  • Moderator

    I'm not sure of the answer to your specific question, but have you seen this yet?

    https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwarePolarPrinter



  • @Phaedrux
    I have looked at the documentation for polar, but there are some things I don't understand.
    Since the movement of the arm is linear, it makes sense to apply steps/mm, but since the movement of the turntable is circular, I think it should be steps/degree, not steps/mm. Is this correct?



  • In the M92 command, the Y parameter is the steps per degree of rotation of the turntable.

    When you give a G1 H1 or G1 H2 command (or G1 S1/G1 S2 for older firmware versions), the Y coordinate in that command must be specified in degrees.


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