Can anyone take a look at this APM mini dataflash log file, not sure why it keeps crashing after a few min of flight.

Yes it downloaded and looks like text, now to figure out what I'm looking at. :)

Use Mission Planner to graph the logs, no reason to read through every line.

Immediately after a flip, have you ever checked the temperature of your ESCs? One may be hotter than the others.

There seems to be little difference, all cool.

Immediately after a flip, have you put it right back into the air with the same battery to see how it behaves? An immediate second flight test timed would be interesting.

Haven't tried that, always went back in to download the data flash logs to see WTF went wrong.

Immediately after a flip, have you put it right back into the air with a different battery to see how it behaves?

same

Also, does it always flip the same direction (in relation to the front of the craft)?

YES! Always forward left.

If it was PIDs, it would consistently flip every time you pitch/rolled it one direction. the 4 minute time frame eliminates normal PID issues.

Yeah doesn't seem like PID issue, I can punch full throttle then let it fall out of the sky and then punch again and it recovers perfectly with little if any vibration.

What changes after 4 minutes? Voltage slopes down, temperature rises up... ...A weak electrical connection will show itself more under low voltage conditions.

Not sure, I graphed out throttle in, throttle out, and voltage, and see no issue.

An overheating component will show itself after heavy work.

Nothing feels even near warm

Could this be an ESC sync issue? I have never experienced one first hand, but I doubt it, since it works perfectly for so long before hand.

/r/Multicopter Thread Parent