I was at a multi rotor meet, had just done a auto tune and things were nice and stable. That's when the quad decided it would do a back flip and crash to the ground...
You can see in the logs the throttle, pitch,roll and yaw goes crazy
Can anyone determine from the log what happened?
Replies
Seach for , and check if you have the famous "motor sync problem" - most common on high pole-count, low KV motors + SimonK firmware.
Check electric connection, and finally, what we see could have been caused by a loose propeller, so unless all hubs were still tight after crash, there may be no way to know. Some experienced motor axle sliding on motors bell as well. (in case of axle-mounted prop holder.)
Right before altitude drop, you can see pitch go to -65deg , while pitchin is never below 0, and rapidly climbs to +44.88 degrees where it stays in hope of correcting the error. :)
So it's most likely there was some machanical or ESC problem.