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    2 endstops on one axis

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    • Ian Millerundefined
      Ian Miller
      last edited by

      If I want to have two endstops on a single axis where only one of the endstops has to be triggered, how would I wire in a second endstop for the one axis to a duet wifi. Would I have to repurpose the expansion board pins?

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      • Vetiundefined
        Veti
        last edited by

        you would wire them in parallel with NO endstops.

        can i ask why you want to do that?

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        • Ian Millerundefined
          Ian Miller
          last edited by

          Yea I am building a machine with a fixed bed and the Y axis has 2 sides. Since its being run with 4 motors wired in parallel to a single driver I want it to stop when either side reaches its max so that it doesn't damage itself if the other side is slightly off.

          Vetiundefined 1 Reply Last reply Reply Quote 0
          • Vetiundefined
            Veti @Ian Miller
            last edited by

            @Ian-Miller said in 2 endstops on one axis:

            Since its being run with 4 motors wired in parallel to a single driver

            this has the potential to go out of sync once the drivers are not powered.

            rrf3 has the ability to align axis using multible endstops. but it requires more than one motor.

            Ian Millerundefined 1 Reply Last reply Reply Quote 0
            • Ian Millerundefined
              Ian Miller @Veti
              last edited by

              @Veti So I've been thinking and I don't need a second extruder motor driver, so if I was able to wire 2 motors to the Y terminal and the other 2 to the E1 motor driver, How would I redefine the E1 driver and respective endstop in the Config. And from there how would I enable rrf3 to align the two sides?
              Thanks for your help.

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              • Vetiundefined
                Veti @Ian Miller
                last edited by

                @Ian-Miller

                the motor config would be
                M584 X0 Y1:4 Z2 E3

                for the endstop config see

                https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors#Section_In_RepRapFirmware_Num_3

                so something like
                M574 Y2 S1 P"ystop+e1stop"

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