Please help me identify the cause of a crash

My rig is the following:

DJI F450 frame

DJI E310 propulsion system

4S 5000 mah battery

AUW ~1600g

My quad suddenly jerked when I was about to start my final descent and fell off the sky from a moderate height.

I am attaching a copy of my .bin log. Thanks in advance

Alvaro

9.BIN

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • Sorry, Alvaro, but you haven't given nearly enough information about your machine to make an intelligent guess as to what went wrong however, a quick auto-analysis of your log file in Mission Planner indicated the following:

    Log File Z:\tmp\tmpCBA.tmp.log

    Size (kb) 1172.853515625
    No of lines 15020
    Duration 0:00:46
    Vehicletype ArduCopter
    Firmware Version V3.3.3
    Firmware Hash acf2e10c
    Hardware Type
    Free Mem 0
    Skipped Lines 0

    Test: Autotune = NA -
    Test: Brownout = GOOD -
    Test: Compass = FAIL - Large change in mag_field (94.85%)

    Test: Dupe Log Data = GOOD -
    Test: Empty = GOOD -
    Test: Event/Failsafe = FAIL - ERR found: CRASH
    Test: GPS = GOOD -
    Test: IMU Mismatch = GOOD - (Mismatch: 0.40, WARN: 0.75, FAIL: 1.50)
    Test: Motor Balance = WARN - Motor channel averages = [1500, 1461, 1595, 1496]
    Average motor output = 1512
    Difference between min and max motor averages = 134
    Test: Parameters = GOOD -
    Test: PM = NA -
    Test: Pitch/Roll = NA -
    Test: Thrust = NA -
    Test: VCC = GOOD -

    A graph of your log revealed huge spikes in your compass mag X, Y and Z values immediately before your crash so I would say your compass (and electrical interference) would be a good place to start.  See 'Compass Interference' in the below:  http://ardupilot.org/copter/docs/common-diagnosing-problems-using-l...

    Good luck

    Diagnosing problems using Logs — Copter documentation
This reply was deleted.

Activity

DIY Robocars via Twitter
Practice virtual race this Saturday; the real thing will be on Oct 3 https://www.meetup.com/DIYRobocars/
22 hours ago
DIY Robocars via Twitter
22 hours ago
Derrick Davies liked lisa TDrones's profile
23 hours ago
DIY Robocars via Twitter
Monday
DIY Robocars via Twitter
RT @SahikaGenc: AWS DeepRacer & Hot Wheels Track https://youtu.be/4H0Ei07RdR4 via @YouTube
Sep 14
DIY Robocars via Twitter
Sep 8
DIY Robocars via Twitter
RT @davsca1: We are releasing the code of our Fisher Information Field, the first dedicated map for perception-aware planning that is >10x…
Sep 8
DIY Robocars via Twitter
RT @SmallpixelCar: How this works: 1)object detection to find cones in single camera image, 30 frames/sec on @NVIDIAEmbedded Xavier. 2)comp…
Sep 8
DIY Robocars via Twitter
RT @SmallpixelCar: Use two color cones to guide the robocar. No map needed, on onsite training needed. Just place the cones and it will fol…
Sep 7
DIY Robocars via Twitter
Sep 7
DIY Robocars via Twitter
RT @roboton_io: Great to see http://roboton.io running at 60fps on the cheapest #chromebook we could find! #edtech #robotics #educat…
Sep 3
DIY Robocars via Twitter
RT @openmvcam: Crazy in-depth article about using the OpenMV Cam for Astrophotography: https://github.com/frank26080115/OpemMV-Astrophotography-Gear https://t.co/BPoK9QDEwS
Sep 3
DIY Robocars via Twitter
RT @openmvcam: Hi folks, it's finally here! Our first draft of our Arduino Interface Library is out! It works over SoftwareSerial, Hardware…
Sep 3
DIY Robocars via Twitter
RT @chr1sa: Please let them have an open API. This would be perfect for @DIYRobocars races https://twitter.com/NintendoAmerica/status/1301513099707658246
Sep 3
DIY Robocars via Twitter
RT @SmallpixelCar: Lanenet pretty much used all my GPU power on @NVIDIAEmbedded Xavier since I optimized with tensorRT. I need to run anoth…
Sep 3
DIY Robocars via Twitter
RT @LyftLevel5: Our @kaggle competition on Motion Prediction for Autonomous Vehicles is now live! Experiment with the largest-ever self-dri…
Aug 24
More…