<![CDATA[Voxl starling crashed all motors stop working mid air]]>My Starlink drone crashed while it was in mid-air, all 4 motors ceased working suddenly. After the crash, I saw qgc was not connected. Has anyone faced this problem? If so can anyone point out the reason and how to solve it? I am assuming it is because the communication failed or the Voxl restarted its services mid-air which led to the crash. If anyone has faced this problem can you please tell me how to sort this out?

]]>https://forum.modalai.com/topic/3384/voxl-starling-crashed-all-motors-stop-working-mid-airRSS for NodeFri, 15 May 2026 04:17:49 GMTWed, 01 May 2024 14:30:18 GMT60<![CDATA[Reply to Voxl starling crashed all motors stop working mid air on Wed, 08 May 2024 13:12:47 GMT]]>@Manu-Verma , that is great that you figured it out!

Can you please help us understand where exactly the loose connection was? Could you please take a picture and mark the location of the issue? That would be really appreciated!

Alex

]]>https://forum.modalai.com/post/16764https://forum.modalai.com/post/16764Wed, 08 May 2024 13:12:47 GMT<![CDATA[Reply to Voxl starling crashed all motors stop working mid air on Wed, 08 May 2024 09:45:57 GMT]]>@Alex-Kushleyev Just figured out why the motors were ceasing mid-air, it was the power module wire that was loose, so whenever I took off, the board was rebooting, (coz of the loose connection to the power module.)

]]>https://forum.modalai.com/post/16762https://forum.modalai.com/post/16762Wed, 08 May 2024 09:45:57 GMT<![CDATA[Reply to Voxl starling crashed all motors stop working mid air on Fri, 03 May 2024 17:44:21 GMT]]>@Eric-Katzfey All 4 motors ceased at the same time it was not spinning at a lower speed after the crash.

]]>https://forum.modalai.com/post/16676https://forum.modalai.com/post/16676Fri, 03 May 2024 17:44:21 GMT<![CDATA[Reply to Voxl starling crashed all motors stop working mid air on Fri, 03 May 2024 17:46:33 GMT]]>@Alex-Kushleyev How can I send you the system data logs from Voxl not the px4 logs, since I can't attach any file here, can you tell by checking the system data logs? And how can I share that file here? Also, I gave the throttle to zero after it crashed.

]]>https://forum.modalai.com/post/16673https://forum.modalai.com/post/16673Fri, 03 May 2024 17:46:33 GMT<![CDATA[Reply to Voxl starling crashed all motors stop working mid air on Thu, 02 May 2024 19:26:57 GMT]]>@Manu-Verma,

some useful plots:

515ca992-e2e4-4a50-93da-04fd95b40d8d-image.png

Zooming into the Manual Control Inputs,
manual_control_input.png

It looks like the vehicle switched from altitude hold mode to position mode, but then the operator dropped throttle to minimum. Does that sound like something that might have happened?

The commanded and actual ESC commands went to minimum (it looks like around 3000rpm), the vehicle was not able to control attitude and flipped over, then motors were commanded to turn off.

]]>https://forum.modalai.com/post/16652https://forum.modalai.com/post/16652Thu, 02 May 2024 19:26:57 GMT<![CDATA[Reply to Voxl starling crashed all motors stop working mid air on Thu, 02 May 2024 14:33:32 GMT]]>@Manu-Verma That log does show that the throttle was pulled all the way down towards the end of the log. Are you sure this is the log from the crash? Did the 4 motors all stop completely or were they still spinning at a lower speed? Were they spinning at all after the vehicle crashed?

]]>https://forum.modalai.com/post/16648https://forum.modalai.com/post/16648Thu, 02 May 2024 14:33:32 GMT<![CDATA[Reply to Voxl starling crashed all motors stop working mid air on Thu, 02 May 2024 13:48:24 GMT]]>@Eric-Katzfey Following is the system_data logs and PX4 logs recorded during last flight.

https://review.px4.io/plot_app?log=dd990b27-ef3a-453a-91ef-c51ff4dc4bbd

]]>https://forum.modalai.com/post/16647https://forum.modalai.com/post/16647Thu, 02 May 2024 13:48:24 GMT<![CDATA[Reply to Voxl starling crashed all motors stop working mid air on Wed, 01 May 2024 15:31:06 GMT]]>@Manu-Verma This needs to be debugged. Obviously, that should never happen. The best way to debug this is to provide log information that can be analyzed for clues. If you see this happen and you can extract the log from dmesg, journalctl -b -u voxl-px4, and the px4 log from /data/px4/log directory that will really help to understand what went wrong.

]]>https://forum.modalai.com/post/16632https://forum.modalai.com/post/16632Wed, 01 May 2024 15:31:06 GMT