motors mapping with Duet Expansion Breakout Board



  • Hi Guys

    I'm working with a duet2 ethernet and i connect an external drivers for the axis X,Y & Z axis (cartesian) using an Duet Expansion Breakout Board and my two extruders are working with the two drivers in the board E0 and E1.

    I would to connect two steppers motors (U,V axis) to the X and Y drivers present in the board, but i don't know how to mapping the motors in the RRF.

    Actually my configuration in the RRF is:

    M584 X5 Y6 Z7 E3:4 ; Apply custom drive mapping

    If i put the next line in the RRF should it work ok?

    M584 X5 Y6 Z7 E3:4 U0 V1 ; Apply custom drive mapping

    Thanks for your help guys.



  • yes.
    you will need to create homing files for them i.e. homeu.g



  • @veti
    i don't need to homing this axis, because they doesn't works like real axis, they just have to move in relative mode with a macro.
    should i do homing anyway?



  • well you need to configure the parameters for the additional axis
    motor current (M906)
    steps/mm (M92)
    acceleration (M201)
    maximum speed (M203)
    jerk (M566)
    axis limits(M208)
    endstop type and position M574 (M574)

    how would you know the position of the axis without homing?



  • @veti
    for the application that i should do i don't need to know the position, they are not real axis, they must make a number of revolutions established in a macro.
    Thank you for your help



  • @veti said in motors mapping with Duet Expansion Breakout Board:

    motor current (M906)
    steps/mm (M92)
    acceleration (M201)
    maximum speed (M203)
    jerk (M566)

    you will still need to configure these regardless


  • administrators

    @jv said in motors mapping with Duet Expansion Breakout Board:

    @veti
    i don't need to homing this axis, because they doesn't works like real axis, they just have to move in relative mode with a macro.
    should i do homing anyway?

    In that case you can just include G92 U0 V0 in homeall.g so that RRF considers that they have been homed.



  • @dc42
    Perfect David Thanks


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