During Roll-axis autotune, the process stopped for an unknown reason, and due to a mix-up with the mode switch, I accidentally activated the Arm/Emergency motor stop switch.
After two ground impacts, the drone suddenly shot up into the sky at full throttle.
I tried to stop it, but the transmitter was unresponsive, and I could only watch.
Upon reviewing the log, I noticed an error with the Fence function.
Although I had enabled the Geofence feature, it didn’t work properly,
Even with the throttle lowered, the motors kept spinning rapidly (from 58:07 to 58:22).
I suspect the potential thrust loss occurred due to the motors twisting after the frame was damaged in the two ground impacts.
I’m finding it difficult to pinpoint the cause of this incident and would like to understand why the drone suddenly flew up with full throttle.
The vibration levels have remained consistent, except during the moments of impact.
I’ve recently made a new discovery:
after the second impact, the GPS-related logs cut off.
It appears that the GPS may have detached from the drone due to the collision.
I just found the damaged GPS near the crash site.
The flight mode was still set to Loiter,
so I suspect that the GPS error may have caused the drone to malfunction.
