Hey All,

i had a fatal crash a month ago (maybe a voltage problem). I rebuilt the quad with new engines and everything from the scratch. Today i flew 6 batteries and everything was really good. On the last (almost fresh) pack the quad suddenly fell from the sky. Again on a paved road so it got destroyed again. Can anyone please tell what happened from the logs? I really need to find out what happened because i cannot afford a fatal crash any month. I am almost about to give this all up although i really love it ...

thanks!

tm

2014-08-02 20-04-30_18.log

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

Join diydrones

Email me when people reply –

Replies

  • you fly X frame, and pitch and roll rarted to oscillate in sync.  

    It seems like you got a problem with motor/propeller #1  (front right)  - APM was struggling with keeping that side up, giving very much throttle.

    Most likely a slipping prop.

    • Hey Andre,

      thank you very much- this helps me a lot. Would you please explain me where you found this? I can see Mot 2, Mot 3 and Mot 4 doing something very different from Mot1 (In the »mot«) panel. Is this the place i have to look for it or did you find this somewhere else?

      once again - thank you ...

      André

      • If you plot ATT/Pitch and ATT/Roll, you'll see then it started to oscillate synchronously,

        The parameter FRAME=1 says you have a X config.  - when both axis oscillate the same, it must be a problem with one of two motors.  (on a + frame, one motor would mainly influence one axis)

        Then you see MOT/Mot1  - that worked using normal thrust all the time, but at the end, it needed to go much higher to to keep it level.  That's a sure sign of trouble.

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @a1k0n: Sync'd @joshu's GoPro w/ my datalogging; video is 2.5X speed, Google imagery upper-right. Found out my track boundaries are WAY…
yesterday
DIY Robocars via Twitter
RT @a1k0n: Also, at 45mph, the front tires literally blow up like a balloon and it doesn't have much front traction, so the car becomes fai…
yesterday
DIY Robocars via Twitter
RT @a1k0n: Okay, some datalogs! Green dots are precalculated racing line (from my crummy optimizer -- it veers to the middle after 2 for Re…
yesterday
DIY Robocars via Twitter
RT @a1k0n: Welp my @selfracingcars entry, hastily conceived heading filter and all, actually worked! Heading home, datalogs and videos to f…
yesterday
DIY Robocars via Twitter
yesterday
DIY Robocars via Twitter
Friday
DIY Robocars via Twitter
RT @f1tenth: What can we learn from autonomous racing? Actually, a lot! To get an idea what you can do in this field and where the research…
Oct 11
DIY Robocars via Twitter
Oct 11
DIY Robocars via Twitter
RT @a1k0n: It's aliiiiiive! Less than a week until @selfracingcars and I'm just now digging this bad boy out. Been a crazy few months. Hope…
Oct 10
DIY Robocars via Twitter
RT @OttawaAVGroup: Mark your calendars. CAV Canada is happening on Dec. 2nd, 10am-4pm EST. And guess what - admission is FREE! Get your ti…
Oct 6
DIY Robocars via Twitter
RT @f1tenth: Our new 1:10 scale 3D racetrack is here. We will implement it in the @SVLSimulator in the next weeks so everybody can use it.…
Oct 6
DIY Robocars via Twitter
RT @DAVGtech: Received sweet autonomous Ferrari's that we plan to demo at the @IndyAChallenge on our portable @donkey_car track. Let us kno…
Oct 6
DIY Robocars via Twitter
Sep 30
DIY Robocars via Twitter
Sep 9
DIY Robocars via Twitter
RT @chr1sa: We've got another virtual @DIYRobocars race tomorrow at 9:00am PT. Two dozen autonomous cars will compete, four at a time. Ther…
Sep 4
DIY Robocars via Twitter
Sep 1
More…