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Crash from around 20m after full throttle climb

Posted by Eddi Maevski on August 17, 2016 at 10:27am

Dear sirs,

Hope someone can a look at the log file and suggest what I should look into.

I've been playing with the copter a bit and towards end of the battery wanted to do some "jumps", after bringing it to stabilize I gave full throttle up and after few sec. it tilted and crashed hard on concrete surface....

The auto log analysis suggests possible brown out.... hmmm.

I have 3dr power module (clone) powering Pixhawk Lite + backup 5V supplied by hobbywing UBEC into the servo rail. No capacitors or diode on the servo rail.

I'll be rebuilding in two weeks and very concerned with this occurrence.

Thanks, Eddi

14.BIN

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Replies

Eddi Maevski August 20, 2016 at 12:26am

Thanks a lot for the hints, much appreciated.

Its a mystery for me why logging stopped mid air.
I'll definitely enable the rcin rcout logging parameters for the future.

Thanks
Michael Burmeister August 19, 2016 at 4:27am

You were not logging RCIN or RCOUT so hard to see what the motors where doing at the time of the crash. Do see that just before it went out of control that the Current went back to normal indicating a power cut but full throttle was being asked for. Shortly there after the copter started to lose control. This would indicated some kind of motor, ESC failure.