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    Wiring and configuring 4 wire heatbed thermistor

    Duet Hardware and wiring
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    • Alcez42
      Alcez42 last edited by

      I'm in progress of installing Duet WiFi in my Wanhao D4S. It comes with a 4 wire thermistor for the heated bed. How should I install and configure this?

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      • Phaedrux
        Phaedrux Moderator last edited by

        Do you have any more information about what the thermistor is?

        Z-Bot CoreXY Build | Thingiverse Profile

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        • dc42
          dc42 administrators last edited by

          A 4-wire thermistor would be very unusual. Are you sure it isn't a PT100? If you have a multimeter, measure the resistance between all the different wires.

          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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          • Alcez42
            Alcez42 last edited by

            This is what the board look like.

            http://beta.ivc.no/wiki/images/e/e4/MakerBot_Replicator_header_board_circuit.jpg

            I tried connecting signal and ground and it seems to work fine without changing sensor type in configuration. Maybe it would be more accurate though if I also connect it to +5V?

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            • dc42
              dc42 administrators last edited by

              Just use SIG and GND, and leave the 5V pin not connected.

              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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