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    Remap a 5th motor to expansion on Duet 0.8.5

    Tuning and tweaking
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    • GWilkens
      GWilkens last edited by

      Hi

      I would like to remap the driver-pins (en, dir, step) of one of the on-board driver to the expansion header.

      I dont need any of the heater or fan pins.

      Is this possible without much trouble to change the pins in the Pins_Duet.h?

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      • Dougal1957
        Dougal1957 last edited by

        see http://reprap.org/wiki/Gcodes#M584:_Set_drive_mapping you can use any of the additional 4 driver pin sets that are already on the duet 0.8.5

        and I am sure David or Tony will be along to confirm or deny this.

        Doug

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        • GWilkens
          GWilkens last edited by

          i know, i am already using them 😄

          i need to use a 5th extern driver ^^

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          • Dougal1957
            Dougal1957 last edited by

            ah OK then David is the man then

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            • dc42
              dc42 administrators last edited by

              You need to change at least two areas. The first is Pins_Duet.h, to increase DRIVES by one, to define which pins you are using, and to remove any existing assignment of those pins. The other is the 3 functions at the end of Platform.h, which are used for driving the STEP pins. See the comment block that precedes those functions. To make is easier for yourself, try to assign the new STEP pin so that it is on port A, C or D and its bit number within the port isn't 1 and doesn't clash with any of the other bit numbers of STEP pins.

              Duet WiFi hardware designer and firmware engineer
              Please do not ask me for Duet support via PM or email, use the forum
              http://www.escher3d.com, https://miscsolutions.wordpress.com

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              • GWilkens
                GWilkens last edited by

                your are great, ill try that.

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