Posts made by george kollamkulam

@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.

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.

Thanks!

@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

@Aaron-Porter right, thank you!

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

George

@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.)

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)?

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

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?
   

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

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!

@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.

Hi,

1. We have a Starling 2 (VOXL 2 autopilot running PX4) and wanted to run SLAM. We have some files of ROS Melodic installed (including voxl_mpa_to_ros_node), but we're unable to source ROS Melodic (it appears that there is no such file or directory when we tried "source /opt/ros/melodic/setup.bash". What could be the issue here and what would the next steps would be?

2. We also wanted to understand if we can uninstall ROS Melodic and install ROS2 Humble (or other distributions) on the same VOXL2 autopilot as ROS2 works better with our pipeline.

Thanks!

@Alex-Kushleyev thanks, I have the M0157 adapter installed on my Starling 2.

Hi,

I was looking to integrate the Teledyne FLIR Lepton 3.5 onto the Starling 2 UAV (running PX4) using SPI/I2C. Could you advise on the steps involved? Would this need any driver level modifications or is sufficient to configure certain pre-defined parameters?

Thanks!

@Alex-Kushleyev Yes I wanted to power a 5V LiDAR. I could try to splice the 5V (pins 1,6) from J19 and use that to power the external sensor, if that's what you recommend. Are these pins limited to 5W (5V, 1 A)? If not, how much power can I safely draw out of that port?

@Eric-Katzfey Got it, thanks.

Can you tell me how to reconfigure the ESC output voltage to 5V DC? It's presently at 3.3 V DC

Hi,

I am trying to integrate the LightWare SF20/C LiDAR on I2C3 port (J19) on Starling 2 UAV (VOXL 2 autopilot running Px4 on QGroundControl). I wanted to understand the following:

1. How can I reconfigure the ESC AUX regulator to 5 V (presently at 3.3 V)?
2. What are the steps to setup the LiDAR on Px4?

Thanks!