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Mosquito Hotend PT1000 issues

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Duet Hardware and wiring
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  • undefined
    wcmartino @dc42
    last edited by 5 Feb 2023, 16:20

    @dc42 That made no difference. The current Duet Mini 5+ was a rev0.5, which was working fine with the e3d thermistor. I have a new Mini that I just ordered for a different project, so I swapped them out and it is working just fine now. Makes me question if the old Mini is broken and it has not worked right for a while.

    undefined 1 Reply Last reply 5 Feb 2023, 16:36 Reply Quote 0
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      dc42 administrators @wcmartino
      last edited by 5 Feb 2023, 16:36

      @wcmartino did you move the SD card from the original Duet 3 Mini to the new one, or did you use a new SD card? If you used a new SD card then perhaps there is something in the config.g or config-override.g file on the original SD card that was affecting the reading and overriding the calibration, such as a H or L parameter in the M308 command for that sensor.

      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

      undefined 1 Reply Last reply 5 Feb 2023, 16:52 Reply Quote 0
      • undefined
        wcmartino @dc42
        last edited by 5 Feb 2023, 16:52

        @dc42 I am in SBC mode so nothing changed between the configurations. It is possible there is just something wrong with the older board.

        undefined 1 Reply Last reply 5 Feb 2023, 17:21 Reply Quote 0
        • undefined
          dc42 administrators @wcmartino
          last edited by 5 Feb 2023, 17:21

          @wcmartino I doubt it, however they will probably need different ADC corrections. Your new board will have had the calibration done and stored during testing; your older board will not. That's why I suggested you perform the calibration. PT1000 sensors are more sensitive to calibration errors than thermistors. Are you sure that you performed the calibration correctly on the older board?

          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

          undefined 1 Reply Last reply 5 Feb 2023, 17:43 Reply Quote 0
          • undefined
            wcmartino @dc42
            last edited by 5 Feb 2023, 17:43

            @dc42 Yes, tried it several times, nothing helped for either sensor. Will have to revist it antoher day, I already have the printer put back together.

            undefined 1 Reply Last reply 5 Feb 2023, 18:39 Reply Quote 0
            • undefined
              dc42 administrators @wcmartino
              last edited by dc42 2 May 2023, 18:41 5 Feb 2023, 18:39

              @wcmartino what L and H corrections did the calibration process report?

              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

              undefined 1 Reply Last reply 5 Feb 2023, 20:09 Reply Quote 0
              • undefined
                wcmartino @dc42
                last edited by 5 Feb 2023, 20:09

                @dc42 Ok reconnested the board. With the sensor disconnected H reports -6. Jumpering the connector on the effector and running the l999 says correction is 1.

                With the resistor in place upon booting it shows -20.5C. If I manually set H to -127 I still show -15.3C.

                undefined 1 Reply Last reply 6 Feb 2023, 07:33 Reply Quote 0
                • undefined
                  dc42 administrators @wcmartino
                  last edited by 6 Feb 2023, 07:33

                  @wcmartino have you tried using a different temperature input?

                  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

                  undefined 1 Reply Last reply 10 Feb 2023, 21:20 Reply Quote 0
                  • undefined
                    wcmartino @dc42
                    last edited by 10 Feb 2023, 21:20

                    @dc42 Appoligies for the delayed response. I get the same results. I am good with running the nerw board on the Delta.

                    undefined 1 Reply Last reply 17 Feb 2023, 13:22 Reply Quote 0
                    • undefined
                      dc42 administrators @wcmartino
                      last edited by 17 Feb 2023, 13:22

                      @wcmartino when and where did you purchase the original board?

                      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

                      undefined 1 Reply Last reply 17 Feb 2023, 13:30 Reply Quote 0
                      • undefined
                        wcmartino @dc42
                        last edited by 17 Feb 2023, 13:30

                        @dc42 I purchased the board from Fliastruder way back in Dec 2020.

                        undefined 1 Reply Last reply 17 Feb 2023, 15:54 Reply Quote 0
                        • undefined
                          dc42 administrators @wcmartino
                          last edited by 17 Feb 2023, 15:54

                          @wcmartino unfortunately it's out of warranty then. As the calibration process produces sensible L and H values, it appears that the ADC is working correctly. You could use your multimeter to check that the thermistor series resistors R60 R61 and R62 read correctly. They should each read 2200 ohms with nothing connected to the TEMP pins.

                          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

                          undefined 1 Reply Last reply 18 Feb 2023, 04:45 Reply Quote 0
                          • undefined
                            wcmartino @dc42
                            last edited by 18 Feb 2023, 04:45

                            @dc42 No worries, I know it is too old. For now I have a new board installed and it is working good. I will mess with the other one when I have some free time. Thanks for all the assistance on this.

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