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GPS Troubleshooting

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  • Stefan AmundarainS Offline
    Stefan AmundarainS Offline
    Stefan Amundarain
    Contributor
    wrote on last edited by Stefan Amundarain
    #1

    We recently connected a Matek M10Q GNSS/Compass to the J19 port of our voxl2. we have a green light on the GPS, and when in the window a blinking Green to indicate GPS fix. We are able to calibrate the compass in PX4, but no GPS data is being recieved. We have the GPS wired correctly. based in the docs.modalai voxl2 onboard sensor user guide. what other steps can we take to troubleshoot? I have also checked voxl-px4.conf and GPS= AUTODETECT
    Screenshot from 2025-03-27 13-11-18.png Screenshot from 2025-03-27 13-06-09.png

    tomT 1 Reply Last reply
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    • Stefan AmundarainS Stefan Amundarain

      We recently connected a Matek M10Q GNSS/Compass to the J19 port of our voxl2. we have a green light on the GPS, and when in the window a blinking Green to indicate GPS fix. We are able to calibrate the compass in PX4, but no GPS data is being recieved. We have the GPS wired correctly. based in the docs.modalai voxl2 onboard sensor user guide. what other steps can we take to troubleshoot? I have also checked voxl-px4.conf and GPS= AUTODETECT
      Screenshot from 2025-03-27 13-11-18.png Screenshot from 2025-03-27 13-06-09.png

      tomT Offline
      tomT Offline
      tom
      admin
      wrote on last edited by
      #2

      @Stefan-Amundarain First GPS lock takes a lot longer than subsequent locks. I'd recommend taking the GPS outside for 15 minutes or so for initial lock.

      Stefan AmundarainS 1 Reply Last reply
      1
      • tomT tom

        @Stefan-Amundarain First GPS lock takes a lot longer than subsequent locks. I'd recommend taking the GPS outside for 15 minutes or so for initial lock.

        Stefan AmundarainS Offline
        Stefan AmundarainS Offline
        Stefan Amundarain
        Contributor
        wrote on last edited by
        #3

        @tom just spent about 20 minutes outside with it, no luck. We will try a different GNSS module and see if its the equipment or the setup.

        Eric KatzfeyE 1 Reply Last reply
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        • Stefan AmundarainS Stefan Amundarain

          @tom just spent about 20 minutes outside with it, no luck. We will try a different GNSS module and see if its the equipment or the setup.

          Eric KatzfeyE Offline
          Eric KatzfeyE Offline
          Eric Katzfey
          ModalAI Team
          wrote on last edited by
          #4

          @Stefan-Amundarain What version of VOXL SDK are you running? Can you provide the output of voxl-version?

          rdjarvisR 1 Reply Last reply
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          • Eric KatzfeyE Eric Katzfey

            @Stefan-Amundarain What version of VOXL SDK are you running? Can you provide the output of voxl-version?

            rdjarvisR Offline
            rdjarvisR Offline
            rdjarvis
            Regular
            wrote on last edited by
            #5

            @Eric-Katzfey we were on 1.3.2, flashed 1.3.5 and had success!

            Eric KatzfeyE 1 Reply Last reply
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            • rdjarvisR rdjarvis

              @Eric-Katzfey we were on 1.3.2, flashed 1.3.5 and had success!

              Eric KatzfeyE Offline
              Eric KatzfeyE Offline
              Eric Katzfey
              ModalAI Team
              wrote on last edited by
              #6

              @rdjarvis Okay, great! Instead of starting voxl-px4 with systemctl start voxl-px4 can you start it as a foreground process using voxl-px4 -d and then capture the output and paste as a response? I'd like to see if there are any error messages printed that could help determine why it isn't seeing your GPS unit.

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