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  3. GPS-denied Navigation (VIO)
  4. OpenVINS issue

OpenVINS issue

Scheduled Pinned Locked Moved GPS-denied Navigation (VIO)
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  • Nitin Varma VegesnaN Offline
    Nitin Varma VegesnaN Offline
    Nitin Varma Vegesna
    Contributor
    wrote on last edited by
    #1

    Hello, I enabled openvins using the documentation here https://docs.modalai.com/voxl-open-vins-server, except the sku.txt change.

    for some reason, I see in the hand testing, the z drift often, and also I continuously see [ INFO] [1770537820.961194398]: FCU: Vision Data Too Old.

    How do I fix these issues?

    Thanks.

    Nitin Varma VegesnaN 1 Reply Last reply
    0
    • Nitin Varma VegesnaN Nitin Varma Vegesna

      Hello, I enabled openvins using the documentation here https://docs.modalai.com/voxl-open-vins-server, except the sku.txt change.

      for some reason, I see in the hand testing, the z drift often, and also I continuously see [ INFO] [1770537820.961194398]: FCU: Vision Data Too Old.

      How do I fix these issues?

      Thanks.

      Nitin Varma VegesnaN Offline
      Nitin Varma VegesnaN Offline
      Nitin Varma Vegesna
      Contributor
      wrote on last edited by
      #2

      Things I changed: "track_frequency": 30,
      "publish_frequency": 20,

      using 2 cameras (not tracking_rear) in voxl_cams.conf

      Is resolution (1280x800) an issue?

      One thing I see is that sometimes, this [ INFO] [1770537820.961194398]: FCU: Vision Data Too Old error comes repeatedly and then z drifts, maybe due to the processing power of the cpu or something else? Please let me know if you know anything regarding this.

      zauberflote1Z 1 Reply Last reply
      0
      • Nitin Varma VegesnaN Nitin Varma Vegesna

        Things I changed: "track_frequency": 30,
        "publish_frequency": 20,

        using 2 cameras (not tracking_rear) in voxl_cams.conf

        Is resolution (1280x800) an issue?

        One thing I see is that sometimes, this [ INFO] [1770537820.961194398]: FCU: Vision Data Too Old error comes repeatedly and then z drifts, maybe due to the processing power of the cpu or something else? Please let me know if you know anything regarding this.

        zauberflote1Z Offline
        zauberflote1Z Offline
        zauberflote1
        ModalAI Team
        wrote on last edited by
        #3

        @Nitin-Varma-Vegesna

        Hello, please provide your platform specs and sdk version.

        Nitin Varma VegesnaN 1 Reply Last reply
        0
        • zauberflote1Z zauberflote1

          @Nitin-Varma-Vegesna

          Hello, please provide your platform specs and sdk version.

          Nitin Varma VegesnaN Offline
          Nitin Varma VegesnaN Offline
          Nitin Varma Vegesna
          Contributor
          wrote on last edited by
          #4

          @zauberflote1 said in OpenVINS issue:

          Hello, please provide your platform specs and sdk version.

          Screenshot 2026-02-09 at 4.25.14 PM.png

          Nitin Varma VegesnaN 1 Reply Last reply
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          • Nitin Varma VegesnaN Nitin Varma Vegesna

            @zauberflote1 said in OpenVINS issue:

            Hello, please provide your platform specs and sdk version.

            Screenshot 2026-02-09 at 4.25.14 PM.png

            Nitin Varma VegesnaN Offline
            Nitin Varma VegesnaN Offline
            Nitin Varma Vegesna
            Contributor
            wrote on last edited by Nitin Varma Vegesna
            #5

            @zauberflote1 this was during hand testing, and I am using 3 cameras now actually.

            Also, when following documentation, I followed this instruction: edit /data/modalai/sku.txt and add a -E1 suffix to the string. save the file, e.g. MRB-D0005-4-V3-C12-E1

            But, I couldn't see /mavros/local_position/odom for some reason after, so I reverted. I don't know if it was an issue with power cycle (pretty sure I did), but that's another difference.

            Nitin Varma VegesnaN 1 Reply Last reply
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            • Nitin Varma VegesnaN Nitin Varma Vegesna

              @zauberflote1 this was during hand testing, and I am using 3 cameras now actually.

              Also, when following documentation, I followed this instruction: edit /data/modalai/sku.txt and add a -E1 suffix to the string. save the file, e.g. MRB-D0005-4-V3-C12-E1

              But, I couldn't see /mavros/local_position/odom for some reason after, so I reverted. I don't know if it was an issue with power cycle (pretty sure I did), but that's another difference.

              Nitin Varma VegesnaN Offline
              Nitin Varma VegesnaN Offline
              Nitin Varma Vegesna
              Contributor
              wrote on last edited by Nitin Varma Vegesna
              #6

              @zauberflote1 In addition, I can't get above 20 FPS for ov_overlay (19 FPS with 2 cameras), which seems pretty bad when QVIO is 30 FPS. Is there a limit on the publish_frequency I could use, although it's not even reaching the publish_frequency.

              zauberflote1Z 1 Reply Last reply
              0
              • Nitin Varma VegesnaN Nitin Varma Vegesna

                @zauberflote1 In addition, I can't get above 20 FPS for ov_overlay (19 FPS with 2 cameras), which seems pretty bad when QVIO is 30 FPS. Is there a limit on the publish_frequency I could use, although it's not even reaching the publish_frequency.

                zauberflote1Z Offline
                zauberflote1Z Offline
                zauberflote1
                ModalAI Team
                wrote on last edited by
                #7

                @Nitin-Varma-Vegesna Please update your SDK to the latest... Minimum SDK required does not mean best performance.

                Also, please follow this post for posting guidelines: https://forum.modalai.com/topic/2670/please-read-support-request-format-for-best-results

                Finally, please provide a screenshot of your voxl-inspect-cpu output...

                Nitin Varma VegesnaN 1 Reply Last reply
                0
                • zauberflote1Z zauberflote1

                  @Nitin-Varma-Vegesna Please update your SDK to the latest... Minimum SDK required does not mean best performance.

                  Also, please follow this post for posting guidelines: https://forum.modalai.com/topic/2670/please-read-support-request-format-for-best-results

                  Finally, please provide a screenshot of your voxl-inspect-cpu output...

                  Nitin Varma VegesnaN Offline
                  Nitin Varma VegesnaN Offline
                  Nitin Varma Vegesna
                  Contributor
                  wrote on last edited by Nitin Varma Vegesna
                  #8

                  @zauberflote1 I am no longer having this issue. I have been flying with OpenVins for some time, and I was sometimes seeing drift in the vio estimate, and I was wondering what are the best configs to use. for vio_cams.conf and voxl-open-vins-server.conf?

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