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Crash after Autotune, Pixhawk

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@Inabnit wrote:

Hi,

I flew a copter with 3.4.6 for some time and it flew ok. I made flights in different modes ( stabilize, Loiter, Auto and RTL) without huge problems. See Log:
Log good flight

Only after I tried to do Autotune i had a crash where I destroyed one propeller.
The copter suddenly started rolling left and right until it crashed. After analyzing the log with my basic skills I saw that the Vibrations were ok (definitely not the best), but the Gyro suddenly stopped working. Nothing else popped out to me.
Please see Logs:

Log crash 3.4.6

After that i decided its time to update to 3.5.3. Also I did remount the Pixhawk, as it turns out with not so good vibration dampening.

During my last flights i had quite a few errors before I even could arm my copter. Rebooting my Pixhawk helped and after a few successful tries i felt confident enough to arm my copter and fly. The log with the errors is here:
Log with errors
Please ignore the hard landing at the end due to the stupid pilot not landing with an empty battery...

During the next flight I tried again to to Autotune. Then after a short time the copter started rolling agin left and right until it crashed. This time the landing gear suffered.
Again the Log revealed that the gyro stopped and that I have bad Vibration.
Log crash 3.5.3

I would be really happy that someone could look at my logs and point me to the errors my Pixhawk or my setup that I did has or if everything is happening because I have bad vibration.

Thank you all very much.

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