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    MAX31865 - resistor rating Rref

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    • parovoZZ
      parovoZZ last edited by

      Hi!

      I have a MAX 31865 card from adafruit and a PT100 sensor. The resistance Rref on this board is 430 Ohm. The temperature readings are not correct. After the calculations, I received a new resistance - 360 ohms. Is it so? A military secret?

      Thanks you!

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      • dc42
        dc42 administrators last edited by

        Version 1.20 firmware supports the R parameter of the M305 command when using PT100 sensors. So add R430 to the appropriate M305 command.

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        • parovoZZ
          parovoZZ last edited by

          WOW!!!!!!!!!
          I'm delighted about the electronic board and what you're doing!

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