Originally Posted by mejmea
With mine I notice that every now and then that the motors won't spin up until I disconnect/reconnect the battery - is that the same symptom you are referring to? I usually see this later in the flight and (I think) when I am not quick enough on the throttle hold prior to crashing. I have been assuming that I was somehow overloading the battery by stopping one or more of the props abruptly while under power and therefore pulling the voltage down below the LVC and that the board then wanted to be re-initialized. You think it has to do with the gyros somehow?
I haven't a clue, I know nothing about the inner workings of RC as yet, but I do know that In general use, an accelerometer / gyro is very good at telling small incremental changes in orientation, but it has no definite dead reckoning to KNOW that 'that way is down' except by gradually accumulating the local rotation changes over time, given its initial state. Now this introduces error over time, but (now I'm guessing) also during a hard crash event. ( caveat, adding a magnetometer to the mix does give you some corrections over time, and a much more accurate heading )
This is mostly conjecture based on the wicked tilt of the 1sq post trauma.. (flip to the ground) even with all motors and props spinning freely. Then cycling the power, and it flying perfectly fine again.