Schematics for PT100 board not on Github?

  • 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.


  • administrators

    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.

  • 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?

  • administrators

    @doctrucker the temperature daughter board schematics an kiCAD projects are shared on the T3P3 github. Here is the PT100 schematic:

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


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