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

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    • michaelg-filamentinnovationsundefined
      michaelg-filamentinnovations
      last edited by

      @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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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        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-filamentinnovationsundefined
          michaelg-filamentinnovations
          last edited by

          @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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          • dc42undefined
            dc42 administrators
            last edited by dc42

            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-filamentinnovationsundefined
              michaelg-filamentinnovations
              last edited by

              @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

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              • dc42undefined
                dc42 administrators @michaelg-filamentinnovations
                last edited by

                @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-filamentinnovationsundefined
                  michaelg-filamentinnovations
                  last edited by

                  @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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                  • dc42undefined
                    dc42 administrators
                    last edited by

                    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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                    • michaelg-filamentinnovationsundefined
                      michaelg-filamentinnovations
                      last edited by

                      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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                      • dc42undefined
                        dc42 administrators
                        last edited by

                        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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                        • michaelg-filamentinnovationsundefined
                          michaelg-filamentinnovations
                          last edited by

                          Will do - thanks @dc42!

                          Mike

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