Dear members,
I would need some help finding the issue for a sudden flip (fortunately at only 2 meters high) of my quadrocopter running apm 3.2.1. It was a flip on the pitch axis, when I was just hovering and testing a new external compass module I installed because my old 2in1 gps module died.
The loganalyzer says something about vibrations:
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Log File C:/Users/Sergeant/AppData/Local/Temp/tmp4BC3.tmp.log
Size (kb) 1500.6318359375
No of lines 20910
Duration 0:01:31
Vehicletype ArduCopter
Firmware Version V3.2.1
Firmware Hash 36b405fb
Hardware Type
Free Mem 0
Skipped Lines 0
Test: Autotune = NA -
Test: Balance/Twist = NA -
Test: Brownout = GOOD -
Test: Compass = FAIL - Large change in mag_field (44.38%)
Max mag field length (583.77) > recommended (550.00)
Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = FAIL - ERR found: CRASH
Test: GPS = GOOD -
Test: IMU Mismatch = WARN - Check vibration or accelerometer calibration. (Mismatch: 1.41, WARN: 0.75, FAIL: 1.50)
Test: Parameters = GOOD -
Test: PM = NA -
Test: Pitch/Roll = NA -
Test: Thrust = NA -
Test: VCC = GOOD -
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I mounted the AUAV-X2 (diy case) on foam and double-sided tape (see picture). I also included the logfile. The copter was flying fine till this day - I did not change any settings or hardware, also the motors seem to be ok. That the internal compass is not working could have nothing to do with this, right?
I would appreciate any suggestions....
Replies
Actually it is complaining about horrible MAG interference. You are getting really bad noise to your IMU.
So the warning does not mean to many vibrations? Can a mag interference cause a flip in stabilize mode?
Maybe I should disable the internal compass.... this is possible, is it?