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    Voxl2 reboot due to what it seems a power limitation

    VOXL 2
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    • VinnyV
      Vinny ModalAI Team @Riccardo Franceschini
      last edited by Vinny

      Hi @Riccardo-Franceschini
      Our USB hubs have a smart power switch with a message feature that relays back to the host if there is an error/over-current condition on VBUS.
      It might be that is what was causing the reset.
      But yeah, glad you figured it out!!
      Nice work!

      VinnyV 1 Reply Last reply Reply Quote 0
      • VinnyV
        Vinny ModalAI Team @Vinny
        last edited by

        @Riccardo-Franceschini For future note, this page here lists all the VBUS capabilities in our designs so you know which port (if any) can support your high current use cases:
        https://docs.modalai.com/expansion-design-guide/#usb-expansion-over-j3--j5

        voxltesterV 1 Reply Last reply Reply Quote 1
        • voxltesterV
          voxltester @Vinny
          last edited by voxltester

          @Vinny

          I have the rebooting issue with a VOXL2 flight deck with Microhard radio.

          I have tested with 5G board (M0090-3-01) as well. I connected a USB3 ethernet adapter on the 5G board to communicate with my laptop through ethernet cable. The same issue happened.

          When I directly powered the system by using a power supply (5V) without a power module, it did not show any rebooting issue....
          I am still figuring out, so please let me know what I need to try...

          VinnyV 1 Reply Last reply Reply Quote 0
          • VinnyV
            Vinny ModalAI Team @voxltester
            last edited by

            Hi @voxltester
            Please take a look at this old thread: https://forum.modalai.com/topic/1356/sentinel-drone-randomly-reboots?_=1673383475709

            Let us know if that issue with J5 is what is happening.

            It is unlikely you are pulling too much current in normal operations as you more than likely have a fault if you think the 5V is drooping.

            Thanks!
            Vinny

            1 Reply Last reply Reply Quote 0
            • voxltesterV
              voxltester @Vinny
              last edited by voxltester

              @Vinny

              I will have a look.

              This is very randomly happening...
              I changed power source (battery, wall power), but it is working well now...

              Is there any way to check GPU usage on VOXL2?

              Eric KatzfeyE 1 Reply Last reply Reply Quote 0
              • Eric KatzfeyE
                Eric Katzfey ModalAI Team @voxltester
                last edited by

                @voxltester voxl-inspect-cpu will show you GPU utilization and temperature

                voxltesterV 2 Replies Last reply Reply Quote 0
                • voxltesterV
                  voxltester @Eric Katzfey
                  last edited by voxltester

                  This post is deleted!
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                  • voxltesterV
                    voxltester @Eric Katzfey
                    last edited by

                    This post is deleted!
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                    • voxltesterV
                      voxltester
                      last edited by

                      @Eric-Katzfey @Vinny @tom
                      This is totally the power cable problem...
                      Is there any future plan to make it stable?
                      It is horrible to imagine the drone crashing due to a reboot issue caused by the power cable.....

                      VinnyV 1 Reply Last reply Reply Quote 0
                      • VinnyV
                        Vinny ModalAI Team @voxltester
                        last edited by

                        Hi @voxltester
                        Apologies you are having issues with the power cable.
                        We have expressed in several forum posts that care must be employed when removing and inserting any power cables to not tug on the cables themselves, but rather the large shroud/connector housing.
                        Pulling on any cable repeatedly will dramatically reduce it's service life as it results in frayed conductors at the pin crimp contacts. This is not an MCBL-00001 issue, but all cables in all electronics not just from ModalAI.
                        There are no plans to change this solution as it has been tried and true for over a decade. Some of my power cables are nearing 13 years old and every one can last that long if handled properly.
                        If needed, I can try to search through some forum posts where I think we have a picture showing the recommended methods of grabbing onto the plastic shroud instead of the cable conductors themselves. Our team is trained on this method as well.
                        Hope this helps.

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