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    Probe output wiring (NPN Inductive)

    Duet Hardware and wiring
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    • AS-3D Druck
      AS-3D Druck last edited by

      Hello guys i got a realy quick Question "i hope".

      I got my Probe NPN running with 24V and use a Relai to switch the 3.3V from the Board to the Pin that need that 3.3V as Signal.
      Now i got the Wiring Diagramm for the Duet Wifi open and don't know the Pin for the Signal.

      Is it: Z_PROBE_MOD or Z_PROBE_IN?

      I tryed already Z_PROBE_IN but i don't wanna destroy the Board so i hope you can help me to prevent me from that. 🙂

      By the way this is the Code i entered (Mode 5):
      M558 P5 X0 Y0 Z1 F500 T5000 H3

      Best regards
      AS-3D Druck / Andre

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      • dc42
        dc42 administrators last edited by

        You could connect the relay contacts between Z_PROBE_IN and ground and use probe type 5, but it's probably better to connect them to the 2 outer pins of the E0 endstop connector and use probe type 4. You will need to include parameter I1 in your M558 command to invert the signal polarity.

        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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        • AS-3D Druck
          AS-3D Druck last edited by

          Ok, but why is the E0 better than the Probe Pins?
          I mean there are made for this right?

          (Just to undestand it) 😉

          Best regards
          AS-3D Druck / Andre

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          • dc42
            dc42 administrators last edited by

            E0 has a lower value pullup resistor.

            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

            1 Reply Last reply Reply Quote 0
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