Posts made by taiwohazeez

Hi modal AI support,

I am trying to calibrate my starling 2 drone camera using openCV 6x8 chessboard (I used this command " voxl-calibrate-camera tracking_front -f -s 6x8 -l 0.038". I think my camera lens might be dull, I have a starling 2 Lens Focus Tool, but I can't find any resource to help me adjust the focus. I have attached an image of me me trying to calibrate the camera so that you clearly understand what I am trying to say. From the first image, you can see how blurry the chessboard is, In the second image, you can see that the chessboard is barely showing when the chessboard was moved inside the rectangle. The third image are what I saw in the starling 2 Lens Focus Tool.

Kindly assist.

Thanks,
Taiwo

Hi support,

I am a PhD student, and I am very new to robotics. We have 4 starling 2 drones in the lab, and right now, I have two of those drones being prepared for RMA. The drones keeps getting damaged because I don't have the right knowledge about drones. I looked up the technical documentations online, but there are still so many things I don't know. For instance, one of my drone crashed when i toggled the switch to hold mode (and it hasn't done that ever since I got it),it shot straight up very fast. I keep getting height estimate not stable (I don't even know what to do to fix that error). Also, the last working drone also drifts around when you toggle the controller to hold (the middle position). At this point, I cant even fly the drones because I might crash them again. And eventually I will get in trouble with these. Can you help with documentations that will make a beginner get all the necessary knowledge. Right now, I am just working on the drone blindly. I will be grateful if you can help with the situation.

Thanks,
Taiwo

@Eric-Katzfey No, the propellers are well positioned (that was the first thing i checked). I compared the drone with another starling 2 drone during arming, the drone not flying (the one i am trying to get fixed) makes more noise, as if the propellers are spinning with higher power while the other drone (the good one) doesnt make as much noise. Also, a point to note, the drone has been working fine since may 2025, up until two weeks ago, so I don't know what might have caused this.

@Eric-Katzfey this is the link https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.px4.io%2Fplot_app%3Flog%3D279179dd-82e9-40f9-a09d-59d793ac34e0&data=05|02|thazeez2024%40fau.edu|3bfe3b5f99cc4a819a7708de21fe6020|63c3c9c1e824413fb4352f0cabb2828f|0|0|638985573747064624|Unknown|TWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D|60000|||&sdata=CBUPqljeTJLLDWFBug33%2BjhanXLhKVMV0GVnCfanLF0%3D&reserved=0

@Eric-Katzfey HI, I have attached a flight log.

Thanks!

@Zachary-Lowell-0 Hi, let me explain what i meant by hovering mode. There is a 3-way toggle switch beside the kill switch in the transmitter (toggling down switches to position mode, toggling up switches to the autonomous mode, while toggling to the middle maintains the drone flight positioning. I have another drone that when the button is switched to the middle, it maintains the drone position (thats what i meant by hover mode). My other starling 2 drones maintains their positions when the switch is toggled to the middle position, but this particular starling 2 drone doesnt.

Hi,

My starling 2 drone was working perfectly up until two weeks ago, I wasn't in the lab last week (so i cant say if anyone tampered with it or not), but right now my propeller spins, but the drone isn't moving from the ground (it sounds like its forcefully trying to lift). Can you help with what might be the cause?

Thanks,
Taiwo

Hi Support,

Kindly assist. I have a starling 2 drone that keeps moving towards the left, sometimes right and sometimes it keeps moving up when i switch the controller to hover mode (for a very few time, it hovered at a spot), but most times, it keeps moving. What could be wrong ? It has been like this ever since it was purchased. Kindly put me through what i need to do to run diagnostics.

Thanks,
Taiwo

@taiwohazeez @Zachary-Lowell-0 , please i am still waiting for a response, an advice on how to go about Apriltag detection on starling 2 would be greatly appreciated.

Thanks

@Zachary-Lowell-0 yes, i copied that directly from the terminal after running this command voxl-inspect-detections -a tag_detections.

Thanks,
Taiwo

Hello support,
I have an issue detecting apriltags with my voxl2 (starling 2), I looked at the documentation online to see how it works.
I ran voxl-tag-detector, and i got this

voxl2:/$ voxl-tag-detector
loading tag-detector config file
loading apriltag config file
=================================================================
detector #0
enable: 1
input_pipe: tracking_front
en_fast_mode: 1
n_threads: 1
en_undistortion: 1
undistort_scale: 0.60
overlay_name: tracking_tag_overlay
lens_cal_file: /data/modalai/opencv_tracking_intrinsics.yml
skip_n_frames: 5
detector #1
enable: 0
input_pipe: stereo
en_fast_mode: 1
n_threads: 1
en_undistortion: 1
undistort_scale: 0.90
overlay_name: stereo_tag_overlay
lens_cal_file: /data/modalai/opencv_stereo_intrinsics.yml
skip_n_frames: 5
detector #2
enable: 0
input_pipe: extra
en_fast_mode: 1
n_threads: 1
en_undistortion: 0
undistort_scale: 1.00
overlay_name: extra_tag_overlay
lens_cal_file: /data/modalai/opencv_extra_intrinsics.yml
skip_n_frames: 5
=================================================================
default_size_m: 0.160
#0:
id: 0
name: default_name
loc_type: unknown
size_m: 0.400
T_tag_wrt_fixed: 0.0 0.0 0.0
R_tag_to_fixed: 0.0 -1.0 0.0
1.0 0.0 0.0
0.0 0.0 1.0
found cam matrix with name 'M' for detector #0
detector #0 is fisheye
waiting for cam pipe tracking_front
detector #0 connected to camera pipe tracking_front
lens #0: fx:460.04 fy:460.58 cx:666.72 cy:382.58
lens #0: fxrect:276.02 fyrect:276.35.

Then on another terminal, i ran voxl-inspect-detections -a tag_detections, but i keep getting unknown, can you help with what i might be doing wrong.

Meanwhile, I have ros2 run voxl_mpa_to_ros2 voxl_mpa_to_ros2_node running.

KIndly assist @tom @teddy-zaremba
Thanks,
Taiwo

HI support,
I have a starling 2 drone with ros2 installed. I ran a ros2 script giving the drone a position command of (0,0,-1.5), i want to believe its NED convention, and i plotted the the commanded Z position vs the actual Z position, I realized my drone (i was using HITL) doesnt climb to the set altitude, it stops at around 0.8m and starts doing a figure eight motion. I believe if i change the offboard_mode from figure eight to off/none, it shouldnt do that anymore(using sudo nano /etc/modalai/voxl-vision-hub.conf). But regarding the drone not climbing to the commanded position, i tried ros2 topic echo/fmu/out/vehicle_local_position, i got;
xy_valid : true
z_valid : true
heading_good_for_control : false

This made me wonder if the issue was because heading_good_for_control is false. Kindly advise.

Best Regards
Taiwo

Hi support,

I Have a starling 2 drone with ROS2 FOXY installed on it, when i run ros2 ropic list, i see the visual odometry as an available topic, but ros2 topic echo /fmu/in/vehicle_visual_odometry
isnt publishing anything, its just stucked. This on the other hand, ros2 topic echo /ov/odom
is working, so I know that my QVIO is running properly.

What can I do.

THanks,
Taiwo

@teddy-zaremba when i did that, it did that, it booted (the esc flashed and went off). I tried connecting the peripherals individually, the LED came up right after I connected this particular 4 pins

@tom @teddy-zaremba can you assist please? This is pretty urgent, I need to get this fixed. Also, the landing gears got broken, and I can't seem to be able to order new parts from the official website, is there a way I can go about it?
Looking forward to your response.
Thanks

@tom @teddy-zaremba Can you assist please? This is pretty urgent!

Hi Support,
I have a starling 2 drone, it had a hard landing and I believe it is in crash state (there is a green LED that is on), due to this, i can't adb shell into it, it's not listed as adb devices, it doesn't even go into fastboot mode. Kindly assist!

I have attached an image of the drone showing the LED.

Thanks,
Taiwo

Hi support,
I have a starling 2 drone that got damaged, due to this damage (the bracket housing the gps), the drone doesn't arm anymore. How can I fix this? Is it possible to fix it myself? or do i have to send it over?

Thanks,
Taiwo

@tom I have been able to clone it using https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-mpa-to-ros2.git , but I have not been able to install ros2 on my voxl2.

So, after cloning the repository, i ran the install deb script using ./install_build_deps.sh qrb5165 sdk-1.5
THen i ran the build script using ./install_build_deps.sh qrb5165 sdk-1.0, but it keeps failing when building px4_msgs.

Am I doing this wrongly? (By the way, i used chatgpt).