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    Schematics for PT100 board not on Github?

    Duet Hardware and wiring
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    • DocTrucker
      DocTrucker last edited by

      Hi all,

      Can someone point me toward the schematics for the PT100 daughter board? I can't see them on the Github.

      Alternatively looking for an economic MAX31865 card with 400Ohm reference resistors rather than the 430 that seems common on ebay.

      Thanks.

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      • dc42
        dc42 administrators last edited by

        You can use interface boards with 430 ohm resistors with recent firmware versions because the M305 command accepts an R parameter. However, if you have a Duet WiFi or Duet Ethernet then I suggest you buy the official daughter board to use it with PT100 sensors, otherwise we can't support you if it doesn't work.

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        • DocTrucker
          DocTrucker last edited by

          Thanks for the clarification regarding the 430ohm. You may wish to tweek the wiki in relation to connecting PT100 to v0.6 boards - it still suggests a board with a 400ohm reference resistor.

          Where's the schematic for the PT100 daughter boards?

          T3P3Tony 1 Reply Last reply Reply Quote 0
          • T3P3Tony
            T3P3Tony administrators @DocTrucker last edited by

            @doctrucker the temperature daughter board schematics an kiCAD projects are shared on the T3P3 github. Here is the PT100 schematic:
            https://github.com/T3P3/TempDaughterboards/blob/master/MAXTempRTD/MAXTempRTDv1.1.pdf

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            • DocTrucker
              DocTrucker last edited by

              Thanks. Was looking on the right github but wrong place!

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