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    Cannot connect to Duet 2 via USB, driver issue?

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    • Phaedruxundefined
      Phaedrux Moderator
      last edited by

      Start here: https://duet3d.dozuki.com/Wiki/What_to_do_if_your_Duet_won't_respond

      Try different USB cables and ports as well. It may not be getting enough power from the port.

      Z-Bot CoreXY Build | Thingiverse Profile

      m3phoundefined 1 Reply Last reply Reply Quote 1
      • m3phoundefined
        m3pho @Phaedrux
        last edited by

        @phaedrux thanks. how the hell do I rectify that? I've tried all the ports and 3 different cables

        dc42undefined 1 Reply Last reply Reply Quote 0
        • dc42undefined
          dc42 administrators @m3pho
          last edited by dc42

          @m3pho have you tried turning the PC off and on again? Sometimes Windows gets into a state in which it can't access a USB device. If you connected the Duet to the PC via a USB hub, it's also possible for the system to get in a state in which Windows stops talking to some of the ports on the hub (disconnecting the hub from the PC and reconnecting it sometimes fixes this).

          Another possibility is that it isn't running valid firmware. If that's the case, you will need to use the Erase button or jumper and then re-flash using Bossa.

          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

          1 Reply Last reply Reply Quote 1
          • m3phoundefined
            m3pho
            last edited by

            tried turning it off and on several times, as well as uninstalling and reinstalling the driver.

            I'm getting 4.75v at the 5v pins so not far off. Will try it on a PSU and see if anything different happens and if the on board 5v supply makes any difference to the USB one. Tried another laptop too and that won't detect it either. The DIAG LED is on all the time which suggests no firmware, but I can't flash it if I can't connect to it, can I? can anything be done via the SD card?

            Also the fan fuse has blown. it's been messed with... I was sold it as "new and unused" but clearly it has been used.

            I'm sending it back to the seller. Not worth the hassle chasing problems. Reliability was the main reason I bought it after similar issues with a bricked BTT board.

            dc42undefined 1 Reply Last reply Reply Quote 0
            • dc42undefined
              dc42 administrators @m3pho
              last edited by

              @m3pho if it has dud firmware installed then you need to use the Erase procedure. That should cause the Bossa port to appear on the PC in Device Manager. https://duet3d.dozuki.com/Wiki/Installing_and_Updating_Firmware#Section_Fallback_procedure_Num_2

              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

              1 Reply Last reply Reply Quote 1
              • m3phoundefined
                m3pho
                last edited by

                I don't see any changes to the lights or anything happening when I go through the erase process. Still nothing on device manager and nothing on Bossa either.

                dc42undefined 1 Reply Last reply Reply Quote 0
                • Phaedruxundefined
                  Phaedrux Moderator
                  last edited by

                  If the cables are good for both data and power with other devices, then it may just be a defective board.

                  Z-Bot CoreXY Build | Thingiverse Profile

                  1 Reply Last reply Reply Quote 0
                  • dc42undefined
                    dc42 administrators @m3pho
                    last edited by

                    @m3pho said in Cannot connect to Duet 2 via USB, driver issue?:

                    I don't see any changes to the lights or anything happening when I go through the erase process. Still nothing on device manager and nothing on Bossa either.

                    Do you still get noises and/or error messages in Windows when you connect the USB 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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                    • m3phoundefined
                      m3pho
                      last edited by

                      nothing whatsoever from the laptop

                      1 Reply Last reply Reply Quote 0
                      • Phaedruxundefined
                        Phaedrux Moderator
                        last edited by

                        In device manager, can you go to View > Show Hidden Devices and see if anything shows up in the listing?

                        Z-Bot CoreXY Build | Thingiverse Profile

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