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    max31865 with duet 2

    Duet Hardware and wiring
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    • KevinSant
      KevinSant last edited by

      Re: PT100 board pinout/instructions?

      help with pinouts

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      • T3P3Tony
        T3P3Tony administrators last edited by

        The up to 4 MAX31865 chips are supported on the temerature daughterboard header, using CS pins CS1,CS2,CS3 and CS4. If you are using our PT100 daughter board then CS1 and CS2 refer to the MAX31865 ICs on the first daughterboard and CS3 and CS4 refer to the second daughterboard.
        25bafe44-3854-43e4-a8b2-9a5ebd0673bb-image.png

        In RRF 3.x you need to setup the temperature sensor
        to use the appropriate CS pin
        https://duet3d.dozuki.com/Wiki/Gcode#Section_M308_Set_or_report_sensor_parameters
        e.g.

        M308 S1 P"spi.cs1" Y"rtd-max31865" A"PT100_1" ; define a PT100 sensor on the temperature daughterboard header, CS1
        

        www.duet3d.com

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        • KevinSant
          KevinSant last edited by

          2a6a6aae-b006-463e-b688-2a6d3705c84d-image.png

          so this is the board I have I know it's not the duet but it's still the 31865 I'm just trying to figure out if my wiring is correct

          max31865 / duet wifi 1.04

          vin/ ?
          gnd/gnd
          3v/3v
          clk/sck
          sdo/Miso
          sdi/mosi
          cs/cs1
          rdy/not applicable

          so I pretty much got it figured out just need to know what vin gets connected to 3v on duet or stays open with nothing

          pipersw 1 Reply Last reply Reply Quote 0
          • pipersw
            pipersw @KevinSant last edited by

            @bks31 you connect VIN to 5v and not connect 3.3V or you leave VIN not connected and connect 3.3V to 3.3V of Duet

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            • T3P3Tony
              T3P3Tony administrators last edited by

              yes that looks right and use 3.3V so the signal levels are correct for the Duet.

              www.duet3d.com

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              • KevinSant
                KevinSant last edited by

                ok so leave vin alone then?
                also I have two of these boards will I be able to stack them on top with same pins except the cs pin and use cs2 for another board

                dc42 1 Reply Last reply Reply Quote 0
                • dc42
                  dc42 administrators @KevinSant last edited by

                  @bks31 said in max31865 with duet 2:

                  ok so leave vin alone then?
                  also I have two of these boards will I be able to stack them on top with same pins except the cs pin and use cs2 for another board

                  Yes.

                  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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