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PT100 Reads 2000C With PanelDue7 Plugged In Via 10 Pin Cable

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  • undefined
    michaelg-filamentinnovations
    last edited by 8 Sept 2019, 00:30

    @Phaedrux Appreciate the info. We are open to ideas. We need to be able to give our customers a way to print offline - so I’m open to trying any ideas you or @dc42 may have.

    Thanks!
    Mike

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    • undefined
      Phaedrux Moderator
      last edited by 8 Sept 2019, 00:56

      Have you seen this?
      https://duet3d.dozuki.com/Wiki/Connecting_PT100_temperature_sensors#Section_To_connect_a_4_wire_PT100_sensor

      Z-Bot CoreXY Build | Thingiverse Profile

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        michaelg-filamentinnovations
        last edited by 8 Sept 2019, 01:04

        @Phaedrux - we did follow that page for setup, but I did not see the two to four wire conversion for the daughter board. I’ll try that tomorrow and report back. Thanks for the tip!

        Mike

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        • undefined
          dc42 administrators
          last edited by dc42 9 Aug 2019, 06:51 8 Sept 2019, 06:48

          It sounds to me that there is a short between the SPI signals on the PanelDue. Is it an integrated PanelDue, or a separate controller and display?

          Check for solder bridges between the pins of the ribbon cable connector on the back of the circuit board of the PanelDue.

          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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            michaelg-filamentinnovations
            last edited by 8 Sept 2019, 12:34

            @dc42 said in PT100 Reads 2000C With PanelDue7 Plugged In Via 10 Pin Cable:

            PanelDue

            Thanks for the reply @dc42 and @Phaedrux .

            Looks like the problem is solved - must be a short on the PanelDue7i screen. I took another one from inventory and swapped them out - everything is working fine. Thank you both for your suggestions!

            @dc42 - Is there anything we can do to fix the one screen we have? Or do we need to write it off?

            Thanks!
            Mike

            undefined 1 Reply Last reply 8 Sept 2019, 14:53 Reply Quote 0
            • undefined
              dc42 administrators @michaelg-filamentinnovations
              last edited by 8 Sept 2019, 14:53

              @michaelg-filamentinnovations said in PT100 Reads 2000C With PanelDue7 Plugged In Via 10 Pin Cable:

              @dc42 - Is there anything we can do to fix the one screen we have? Or do we need to write it off?

              Did you check for shorts between pins on the underside of the 7i PCB where the ribbon cable connector is soldered to it? Also check for shorts between the pins of the SD card socket.

              0_1567954435704_Inked2019-09-08 15.45.25_LI.jpg 0_1567954474576_Inked2019-09-08 15.45.36_LI.jpg

              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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                michaelg-filamentinnovations
                last edited by 12 Sept 2019, 11:23

                @dc42 @Phaedrux

                Apologize for the late reply here - but here are some pictures if you see anything I missed.

                Thank you!

                alt text

                alt text

                alt text

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                • undefined
                  dc42 administrators
                  last edited by 12 Sept 2019, 12:12

                  I can't see anything obvious. How long is your ribbon cable?

                  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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                  • undefined
                    michaelg-filamentinnovations
                    last edited by 13 Sept 2019, 01:53

                    I couldn’t see anything either - glad I’m not going crazy! Ha.

                    It is 350mm using 26awg ribbon cable we buy from 3M. We make the cables in house.

                    I tried another (third) screen and that one worked too, just not sure why the first one won’t work with the PT100.

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                    • undefined
                      dc42 administrators
                      last edited by 13 Sept 2019, 06:31

                      Somewhere on that screen there is a short between the SPI signal conductors between the ribbon cable socket and the SD card, or to ground. I suggest you ask your supplier for a replacement.

                      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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                      • undefined
                        michaelg-filamentinnovations
                        last edited by 13 Sept 2019, 11:35

                        Will do - thanks @dc42!

                        Mike

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