I have been experiencing a non-consistent problem with my Elev-8. I can often get in some 10-15 minute flights, gaining some altitude and distance. But, occasionally the copter will flip (roll) 180 degrees and head straight (upside) down. This has happened anywhere from 7 to 20 feet in altitude resulting in damage to motor mounts and props.
I really do not know where to start. I have been looking at the sensor data stream, but do not know if it is the flight controller or the transmitter or even the esc. I took screenshots of the sensor data to try to analyze, but really do not know where to start. Sometimes the Yaw Data is off the charts.
I have done the Accel and Gyro calibration many times.
Any advise would be greatly appreciated.