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    PT100 amplifier board - redaings seems to be 30 degrees below

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    • dc42undefined
      dc42 administrators @tony449777
      last edited by

      @tony449777 said in PT100 amplifier board - redaings seems to be 30 degrees below:

      @dc42 I can’t attach a picture, it will not let me however I can tell you R1 is marked”102” while R2,R3,R4 are all marked “201”

      Why can't you attach a picture?

      Do both channels give the wrong reading when you connect the 100 ohm resistor to each in turn?

      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

      tony449777undefined 2 Replies Last reply Reply Quote 0
      • dc42undefined
        dc42 administrators @tony449777
        last edited by

        @tony449777 said in PT100 amplifier board - redaings seems to be 30 degrees below:

        Also curious, if the channel 1 on the daughter board is “spi.cs1”
        And you have one daughter board with the two ports, then is the second port for the same card “spi.cs2”?

        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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        • tony449777undefined
          tony449777 @dc42
          last edited by

          @dc42 yes

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          • tony449777undefined
            tony449777 @dc42
            last edited by

            @dc42 I’m using the phone application. Every time I try to attach a picture it just says undefined.

            dc42undefined 1 Reply Last reply Reply Quote 0
            • dc42undefined
              dc42 administrators @tony449777
              last edited by

              @tony449777 it's easier from a PC, you can just drag and drop a .jpg file into your post.

              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

              tony449777undefined 1 Reply Last reply Reply Quote 0
              • tony449777undefined
                tony449777 @dc42
                last edited by

                @dc42 Update. Switched out the daughter board for another one I purchased from filastruder and it works fine. It must be the board.

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                • Phaedruxundefined
                  Phaedrux Moderator @tony449777
                  last edited by

                  @tony449777 said in PT100 amplifier board - redaings seems to be 30 degrees below:

                  I believe I got this daughterboard from Filastruder. It was purchased a while ago, but never used until this build.

                  How long is a while ago?

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • c310undefined
                    c310
                    last edited by

                    @dc42 my 2nd channel died :I( i will be replaceing the chip, on the way want to check other parts. there are 2 pairs of capacitors - c1/c2 + c5/c6 what its default capacity should be?

                    also there is small black SMD element in between C1 and R1. what is it? what are the parameters?

                    many thanks!

                    T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                    • T3P3Tonyundefined
                      T3P3Tony administrators @c310
                      last edited by

                      @c310 the schematic for the board is here:
                      https://github.com/Duet3D/TempDaughterboards/blob/master/MAXTempRTD/MAXTempRTDv1.1.pdf

                      I assume you are refering to the inductor L1:
                      44ee4cbd-71c9-4410-add1-df5f1917f77c-image.png
                      7fe0d7b4-f8d2-44be-b028-30636180b164-image.png
                      two screen shots depending on the version of the PT100 db you have.

                      it is an inductor such as LB2012T101K

                      www.duet3d.com

                      c310undefined 1 Reply Last reply Reply Quote 0
                      • c310undefined
                        c310 @T3P3Tony
                        last edited by

                        @t3p3tony said in PT100 amplifier board - redaings seems to be 30 degrees below:

                        LB2012T101K

                        thank you @T3P3Tony !!!!

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