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APM 3.2 QUADCOPTER Err: EKF_CHECK-2 / Err: FAILSAFE_ EKF-1

Posted by Gonzalo Garat on December 15, 2014 at 4:26am

Hi all,

I'm attaching my log from our last flight as our little quad went completly bonkers before it crashed.

Short after takeoff it went completly out of control, no response at all from RC or Telemetry and then crashed near a pond (thank god).

But the mistery was about to begin when we started reviewing the log and found out that the trigger was the failsafe error  Err: EKF_CHECK-2 / Err: FAILSAFE_ EKF-1. 

In understand these two were recently added to APM, but this ain't the first time I see this sort of thing happening.

I'm attaching my log in hopes for some guidance.

Thank you all!

2014-12-14 11-10-14.log

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Tags: ekf, failsafe
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Replies

      • WR > Ted Morgan May 6, 2015 at 4:06am

        Not sure how you attached the bin..

        here is a link to mine in drop box

        https://www.dropbox.com/s/631xegi2gfq6b99/2015-04-06%2013-46-59.bin...

         

        Dropbox - Link not found
        Dropbox is a free service that lets you bring your photos, docs, and videos anywhere and share them easily. Never email yourself a file again!
        • Andy Piper > WR May 6, 2015 at 4:16am

          Later on in the log it looks like bad vibrations, but the initial error looks like the OP - huge requested Yaw triggering an EKF fail error. Your ErrYaw is also huge all the way along, so you should look at the vibrations anyway.

          • WR > Andy Piper May 6, 2015 at 4:33am

            what is a OP

        • WR > WR May 6, 2015 at 4:12am

          Found out how to Attach file.. here are a few logs from when the error was occurring.. 

          2015-04-11 15-35-56.bin

          2015-03-10 14-19-42.bin

          2015-04-06 13-46-59.bin

          • Andy Piper > WR May 6, 2015 at 4:26am

            You have bad vibrations. You should fix those - it is the cause of most of your problems.

            • WR > Andy Piper May 6, 2015 at 4:29am

              Bad Vibration.. What are you looking at so I can see what you mean? and besides balancing props how do you get rid of that?

              Sorry I'm a newb!

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