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    george kollamkulam

    @george kollamkulam

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    Latest posts made by george kollamkulam

    • RE: Teledyne FLIR Lepton 3.5 Integration

      @Alex-Kushleyev I tried using the Lepton 3.5 sensor again, but this time I was unable to see the feed on the voxl portal, although voxl-lepton-server and voxl-camera-services were running. Additionally, I couldn't hear the clicking sound from the lepton sensor that was previously present. What could be the issue here? Is there anything I'm missing?

      I also noticed that the rear tracking camera wasn't functional (I'm not sure if this is related to the functioning of the lepton camera). It was seen on the voxl system check page on the voxl portal.

      Lepton.png

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam
    • Incorrect battery0 voltage on QGC

      Hi,

      I'm seeing incorrect battery0 voltage on QGC. Would appreciate your help in resolving this issue.

      I'm using the 2S Amprius battery packs on my Starling 2 and the battery parameters are attached below. Batt_params3.png Batt_params2.png Batt_params.png

      Thanks!

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam
    • RE: Starling 2 - failure when entering offboard mode in Starling 2

      @Hector-Gutierrez have you seen this is any other mode? I observed something similar in position mode, but no additional sensor calibration was done. I was manually trying to descend, but the Starling2 kept climbing. At first I thought it was pilot error (likely due to the spring loaded throttle stick), but later it became clear that the climb was not commanded. @Moderator

      posted in Starling & Starling 2
      george kollamkulamG
      george kollamkulam
    • RE: ROS2 Foxy Setup Issues

      @Aaron-Porter right, thank you!

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam
    • RE: Teledyne FLIR Lepton 3.5 Integration

      @Alex-Kushleyev thanks, this seems to be working well. Can you also share what voxl-lepton-tracker is used for?

      George

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam
    • RE: ROS2 Foxy Setup Issues

      @george-kollamkulam

      Just noticed something with point #2.

      ros2 run voxl_mpa_to_ros2 voxl_mpa_to_ros2_node stops the voxl-camera-server, and we stop seeing some of the interfaces from which we want to access data (tof_pc, tof_depth, hires_small_encoded etc.)
      voxl-camera-server.png

      Could this be the reason why we're only able to echo only /imu_apps (which I assume is completely unrelated to the voxl-camera-server)?
      Screenshot_2025-06-30_15-24-02.png

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam
    • ROS2 Foxy Setup Issues

      Hi,

      We're trying to read data from our Starling 2 UAV (VOXL2 autopilot) using ROS2 Foxy and wanted some help troubleshooting:

      Setup:
      We used the following commands for installation on the UAV.
      apt-get install voxl-ros2-foxy
      apt install -y voxl-mpa-to-ros2
      Voxl-configure-mpa-to-ros2
      source /opt/ros/foxy/setup.bash (inside voxl-mpa-to-ros2)-> source install/setup.bash
      ros2 run voxl_mpa_to_ros2 voxl_mpa_to_ros2_node
      ros2 topic list

      On the GCS, we just used apt-get install voxl-ros2-foxy.
      The UAV was in softap mode and the GCS was connected to the VOXL WiFi network.

      We could see the topic list when we ssh into the UAV from our GCS, but we had a couple of issues:

      1. The topic list keeps changing when we run these commands. Sometimes we see tof_pc, tof_depth but sometimes we do not.

      2. We were only able to echo /imu_apps from the GCS. We could not access the mpa sensor data and we don't get any output (no message structure, no info) when we try to echo any /hires, /tof, /tracking or any other type of interface in the voxl_mpa_to_ros2_node.

      3. We tried using rviz2 to stream the camera and point cloud data (selected different topics like tof_pc, hires_small_encoded etc), but it didn't produce any output.

      Is there a way to ensure that the sensor data is getting published?

      Thanks

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam
    • RE: ROS Melodic Sourcing

      Hi,

      1. Is it possible to upgrade the Ubuntu version to 22.04 on the VOXL2 autopilot? This is to use ROS2 Humble without a docker.

      2. Currently to run ROS2 Humble on the existing Ubuntu 18.04 setup, we installed a docker but we're a repeatable issue.The colcon build --symlink-install keeps failing (screenshot attached below). How can we resolve this?
        Screenshot from 2025-06-29 23-55-51.png

      We've also seen a few instances of location conflicts during the installation of ROS2 humble, but have tried to resolve that as and when we see them.

      Thanks,
      George

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam
    • Starling 2: Data Storage & Access

      Hi,

      Where is the sensor data stored on the Starling 2 UAV? I wanted to access the TOF point clouds, camera and other sensor data and pass it to another system real-time. What would be the best way to achieve this?

      I saw an option to 'Save Map' on the VOXL web portal, but I'm not sure where it gets saved.

      Thanks!

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam
    • RE: Teledyne FLIR Lepton 3.5 Integration

      @Alex-Kushleyev It looks like our Starling 2 UAV has the M0157 adapter, the M0173 board (Yellow PCB that also connects to the 3 AR0144 sensors and the TOF sensor), and the 7pin cable that connects the M0157 adapter to the M0173 board. Just to clarify, this configuration is sufficient to integrate (plug-and-play) the Teledyne FLIR Lepton 3.5 without modifying the drivers? If not, do you have any recommended thermal sensors that can directly fit into this hardware and software architecture? I'd be happy to buy them.

      posted in Ask your questions right here!
      george kollamkulamG
      george kollamkulam