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    Attempt to move motors when VIN is not in range DWC shows 0.5V

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    Duet Hardware and wiring
    vin not in range
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    • dc42undefined
      dc42 administrators
      last edited by dc42

      The voltage reported by DWC (and also in the M122 report) is the VIN voltage after the 7.5A fuse. That supply also feeds the stepper motors, 5V regulator and extruder heaters. A voltage divider with a ratio of 11:1 feeds the ADC input.

      If the input to the voltage divider is 24V but the DWC reading is only 0.5V then I can see a few possibilities:

      1. The upper resistor in the voltage divider is not soldered down or is cracked.
      2. The ADC input pin is shorted to another signal that is close to ground potential.
      3. The ADC has failed. But in that case I would expect the thermistor readings not to be correct.

      My gut feeling is that your Duet can be got working again.

      Does the extruder heater heat up when commanded to do so, despite the VIN reading of 0.5V in DWC and/or M122 ?

      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

      elmoretundefined Magnusjenundefined 2 Replies Last reply Reply Quote 0
      • elmoretundefined
        elmoret @dc42
        last edited by

        @dc42 He has a 1.03, not 1.04.

        OP: can you post a photo of your board from above?

        tenjinundefined Magnusjenundefined 2 Replies Last reply Reply Quote 0
        • tenjinundefined
          tenjin @elmoret
          last edited by

          @elmoret

          is it possible this is the same issue the other guy had?

          do you have a 10 pin connector hooked up to an LCD?

          Magnusjenundefined 1 Reply Last reply Reply Quote 0
          • Magnusjenundefined
            Magnusjen @tenjin
            last edited by

            @tenjin Hi there, no I don't have an LCD and I have nothing going into the 10 pin connector.

            1 Reply Last reply Reply Quote 0
            • Magnusjenundefined
              Magnusjen @dc42
              last edited by

              @dc42 Thanks for replying, you got the situation right, I will upload a picture of my board aswell as another guy commented.

              The extruder heater heats up fine, I checked both at the nozzle "to see it was just an IT lie" and DWC reports the heating. I have taken a screenshot of my DWC.

              I would be happy if whatever mistake I have made can be corrected, you guys have made an awesome board.

              0_1552628048374_2019-03-15.png

              I could not also add the picture of my board, I will do it as a reply to the other guy

              1 Reply Last reply Reply Quote 0
              • Magnusjenundefined
                Magnusjen @elmoret
                last edited by

                @elmoret Hi there, here is a picture of the board from above, if you guys need it I can unplug everything.

                0_1552628177522_2019-03-15 06.27.29-1.jpg
                0_1552628198909_2019-03-15 06.27.20.jpg

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

                  As this is such an unusual fault, and I can't think how it would have been caused by user error, I am happy to approve a warranty replacement if it's a genuine Duet and it was in warranty when the fault was reported. If it was out of warranty then I suggest that the board is sent to our US-based repairer for analysis and possible repair.

                  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

                  Magnusjenundefined 1 Reply Last reply Reply Quote 1
                  • Magnusjenundefined
                    Magnusjen @dc42
                    last edited by

                    @dc42 Hi, that is an amazing offer! I bought it Friday last week (2019.03.08) from RepRap.me in Denmark, they are one of your vendors in Denmark and I could not imagine them selling a knock off.

                    How do I go about the warrenty replacement?

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

                      Contact RepRap.me and point them to this thread.

                      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

                      Magnusjenundefined 1 Reply Last reply Reply Quote 0
                      • Magnusjenundefined
                        Magnusjen @dc42
                        last edited by

                        @dc42 Thank you for your assistance, hopefully I can get the next to function and can post more interesting questions

                        1 Reply Last reply Reply Quote 0
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