Just trying this issue up, Sorry could not make the images link.
Below is the topic posts relative to this issue:-
[quote] Strange Crash
Hello to all
Can someone analyze why my X* crashed i suspect problem in compass and probably problem with internal compass[/quote]
Besides your compass interference are high, I don’t think that was the cause. I would suspect that your PIDs aren’t adequate
[quote]Test: Autotune = NA -
Test: Balance/Twist = NA -
Test: Brownout = FAIL - Truncated Log? Ends while armed at altitude 4.04m
Test: Compass = FAIL - Large change in mag_field (60.66%)
Max mag field length (1014.14) > recommended (550.00)
Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = GOOD -
Test: GPS = GOOD -
Test: IMU Mismatch = NA -
Test: Parameters = GOOD -
Test: PM = NA -
Test: Pitch/Roll = NA -
Test: Thrust = NA -
Test: VCC = WARN - VCC min/max diff 5.207v, should be <0.3v[/quote]
[quote]By the logfile , in the last few seconds, starting on line 48.5K it looks like the copter has wobbled hard on roll axis then a brownout occurred. Did the batteries got ejected ?
How did you tune your PID parameters?
Also your vibration levels are pretty high. I don’t think that was the cause either, but it could bring you problems.
Could you describe what happened? Did you tape that?[/quote]
[quote]Re: Strange Crash
Looking quickly at the log, there are a lot of instances there the actual pitch is opposite to the Desired pitch.
This would indicate to me either the motor / prop setup is back to front or the AMP is facing the wrong way.
I will have a better look at the logs later…[/quote]