Hi
At Friday I try to flight with my FPV250 race with pixracer. During liftoff copter flip-back. After second try props were destroyed. Logs are here
http://logs.uaventure.com/view/LkyDTwtzh7qWom7bjtiWhC
http://logs.uaventure.com/view/ugbjqeQvjeh7qfio8PrUaF
At logs is strange is no evidence about roll and pitch movement, so it looks like there was something wrong about estimator.
I did one thing diferent - I armed using QGC, coud it be cause?
Today I try another flight, and everything works OK(armed by RC)
David