Drone crashed hard with no apparent reason

[endrew (hanoch e)]

Can anyone shed light on what happened? Here is the datalog file. You can see at the end of the flight for some reason the drone do not track the desired roll and pitch…

Thanks!

[mboland (Mike Boland)]

You ran out of battery
Have a look at the volts when it lost stability.
Could also benefit from an Autotune.