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    2. Dong Liu
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    • Topics 12
    • Posts 43
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    Topics created by Dong Liu

    • Dong LiuD

      Can't Flash VOXL2 (Battery Capacity is Very Low)

      VOXL 2
      • • • Dong Liu
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      modaltbM

      Hi @Dong-Liu OK thank you for the update. Once it has been updated to the latest image, I wouldn't expect that battery error to show up in the future.... if it does please let me know!

    • Dong LiuD

      mpa_to_ros publish stereo left and right image in different timestamp

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      Just tried to calibrated the stereo camera using ROS camera calibrator. Had to run the fixed voxl-mpa-to-ros. Because the ROS calibrator expects left and right to be exactly synchronized.

    • Dong LiuD

      how to build voxl-camera-server

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      Found the problem 😞

      The voxl-docker script mount host /data to the container /data. But voxl-cross image has its own /data folder where /data/offline_ipk_packages/apq8096-proprietary_0.0.4.ipk is stored.

      Remove the -v /data:/data from voxl-docker script, start the docker again. This it works!

    • Dong LiuD

      voxl-camer-server's hires snapshot produce huge files

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      I extract the findJpegSize function, add to voxl-camera-server. Now it will produce the correct size snapshot.

    • Dong LiuD

      voxl-mpa-to-ros high system usage due to repeating invoking voxl-list-pipes

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      @Chad-Sweet I also added skip n frame feature in the camera interfaces, It is quite useful to reduce the network traffic. Do you think should submit one full request with bother features or two pull requests?

    • Dong LiuD

      vslam map export and import

      Ask your questions right here!
      • • • Dong Liu
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      Steve TurnerS

      QVIO does not perform SLAM, only visual tracking to aid in stability by tracking the velocity vectors of key points through a camera.

      https://gitlab.com/voxl-public/voxl-sdk/services/voxl-mapper performs mapping and planning. Data can be imported and exported through VOXL Portal with "Load Map" / "Save Map"

    • Dong LiuD

      image compression API?

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      @Eric-Katzfey Hi Eric. The jpeg compression imposes a lot of load on the CPU, especially we're using the hires camera. Is there any way you can make the HW jpeg encoding available for us to test it?

      Thanks!

    • Dong LiuD

      docker on voxl flight deck stop working

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      after mkdir /data/docker and /usr/bin/docker daemon -g /data/docker, I saw there is file /data/docker/network/files/local-kv.db. So I just rm /data/network/files/local-kv.db. Now the docker daemon will start.

      But anyway I think it is better make change in /etc/systemd/system/docker-daemon.service, from

      ExecStart=/usr/bin/docker daemon -g /data

      to

      ExecStart=/usr/bin/docker daemon -g /data/docker

      So next time if we want to remove all docker images and clean up the docker, just remove everything under /data/docker.

    • Dong LiuD

      hires image upside down?

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      @tom Ok, thanks!

    • Dong LiuD

      voxl_qvio_server version problem

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      @Alex-Gardner Thanks!

    • Dong LiuD

      MAC address of the WiFI interface on RB5

      Ask your questions right here!
      • • • Dong Liu
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      tomT

      @Dong-Liu Unfortunately that is a bug with the SD865 SOM. We've had a ticket open with Qualcomm for a long time with no solution yet.

      Checkout this thread for a solution: https://forum.modalai.com/topic/794/how-to-set-up-a-static-ip-in-rb5/15?_=1659465332297

      You basically just need to create a systemd service file to set the IP on boot.

    • Dong LiuD

      Install voxl sdk on RB5

      Ask your questions right here!
      • • • Dong Liu
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      Dong LiuD

      @Chad-Sweet Thank you!