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Endstop wiring order

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Duet Hardware and wiring
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  • undefined
    duettomio
    last edited by 8 Apr 2020, 04:31

    Hey Everyone,
    I am using the 3 wire end stop switches from my LergeX board, they are labeled C NO NC, but I have no clue how to connect them to the Duet2 to GND, 3V3, STP. I have already tried to connect one, but the board won't start on USB power.
    I'll have to re-crimp to the Duet2 connectors since they have different plugs.
    Any help appreciated, Thanks.
    20200408_002212.jpg

    Two Trees Sapphire S with Duet2 Ethernet

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    • undefined
      Danal
      last edited by 8 Apr 2020, 04:35

      For Normally Closed, which is what you want, connect the OUTER two wires from the switch. The center wire will not be connected.

      On a Duet 2, connect them to the Zstop (or Xstop or whatever) and GND on the 3 pin connector. 3.3V on the Duet board will not be connected.

      Delta / Kossel printer fanatic

      undefined 1 Reply Last reply 27 Nov 2021, 21:28 Reply Quote 1
      • undefined
        duettomio
        last edited by 8 Apr 2020, 14:37

        Thank You.
        I'll try that today.

        Two Trees Sapphire S with Duet2 Ethernet

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        • undefined
          duettomio
          last edited by 11 Apr 2020, 01:56

          Worked great, thank you.

          Two Trees Sapphire S with Duet2 Ethernet

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          • undefined
            FrankV @Danal
            last edited by 27 Nov 2021, 21:28

            @danal thanks this was of great help also for my Duet3. I am a little visual minded so draw this to make it clear for me. Maybe of help to some others too.
            b652c7bf-2648-4734-a635-7116edf44e9b-image.png

            undefined 1 Reply Last reply 27 Nov 2021, 21:33 Reply Quote 1
            • undefined
              jay_s_uk @FrankV
              last edited by 27 Nov 2021, 21:33

              @frankv it's recommended to use normally closed switches and not normally open as normally open is susceptible to noise and false triggering. If the wiring fails it will also continue to try to home.
              It's best to use the two outer legs and not the NO leg

              Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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