Horizon is moving on mission planner

I'm trying to setup my tricopter at home, in my office

my gps is locked and my tricopter on a table

My horizon in the flight planner is moving?? My tricopter don't move..

Is it because i'm inside and because my gps have not a good lock ?

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Permalink Reply by Patrick Helsemans on March 29, 2013 at 2:31am

I was trying outside and i have the same result..

De data my apm 2.5 from my gps is like variable. The altitude is not correct (ex -1,5 m) en the position is moving + artificial horizon..

Interferences? is it possible to reset my gps 3dr? 

Permalink Reply by Wilfred Swinkels on March 29, 2013 at 2:44am

I have the same problem

I really don't know what is going on

same story here ...APM2.5, gps lock, tuned magneto, everything ok.   hexacopter on the table, but horizon moving like 

in a storm.

Wilfred

Permalink Reply by Patrick Helsemans on March 29, 2013 at 3:53am

Someone an idea? I will try with a new GPS adapter cabel. Should it be the problem?

Permalink Reply by Wilfred Swinkels on March 29, 2013 at 4:26am

allmost certainly not but you can try by disconnecting the GPS.

maybe it is something in the software.

Permalink Reply by Patrick Helsemans on March 29, 2013 at 4:31am

already done, my articial horizon is still moving...

Permalink Reply by Shubhnkar Chaudhury on March 29, 2013 at 6:38am

I m also having the same problem !

I think there is some problem with Barometer readings.

i have tested barometer separately using Arduino IDE example code (comes in the package ArduCopter 2.7.3 ) and found that altitude reading is fluctuating too much within 2 meter range.

guys plz check out and let me know if u guys also getting same results.

and plz help me with this problem if anyone can...

Permalink Reply by Patrick Helsemans on March 29, 2013 at 7:36am

a GPS will rarely give an accurate position while indoors or near walls due to multipath-ing. If you go outside you should see that it settles down.

Permalink Reply by criro1999 on March 29, 2013 at 12:35pm

what means "horizom moving"? 2.8.1. or 2.9.1?

up and down? or tilting left or right?

i believe this is not related to GPS but to gyros.

try to redo the calibration in CLI. I did have similar issue in 2.9.1, not in 2.8.1.

Permalink Reply by Patrick Helsemans on March 29, 2013 at 1:05pm

As long as i don't bind the gps i don't have any problem with the horizon.

i think i have a bad gps signal round my house. i will try tomorrow in an open area and check the difference

best regards

Permalink Reply by Mark Mazurkiewicz on March 29, 2013 at 2:45pm

I had the same issue with ArduPlane 2.7 on 2 different APM 2.5's.  Are you by chance using the uBlox GPS?  I was getting the artificial horizon start to jump around with the uBlox attached.  I swapped the uBlox out for a MediaTek and the issue went away.  For me the issue is reproducible.  I have tried 2 different uBlox GPS on 2 different APM 2.5 and get the same result.  I put the MediaTek GPS on both APM's and the instability issue goes away.  I suspect its a software issue with the uBlox hardware drivers, but that is just speculation.

Permalink Reply by Patrick Helsemans on March 30, 2013 at 1:27am

yes i'm using the 3DR GPS uBlox LEA-6.

i made yesterday a test flight and i don't have any problem. The gps was fixed and the tricopter stable

it's maybe only a software problem who don't have any impact on the flight...

Permalink Reply by Wilfred Swinkels on March 30, 2013 at 1:53am

yes ublox here also

Im going to exchange it for my mediatek to see if it goes away ....see you in about half an hour :-)

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