Some interesting videos of my morning flights with the latest firmware and APM2.

Dont forget to watch the last video ;)

1st loiter

Arducopter, now with REAL chicken sound effects...
Loiter worked quite well considering the drift issue...
It only started to drift after a while.
Seems like the more stick input you give, the worse the drift gets.]

2nd loiter It went better, I tried to stay away from using too much stick.

1st alt hold. Went beautifully, as good as the sonar! Still the drift issue in stabilize.

low level alt hold
Pool noodles rock!

Karlas first attempt
I suppose I should fix the drift issue before I let my GF fly it...
Fortunately I was controlling the throttle and trying to film.
Funny as hell! It landed on the roof...

Loiter and Alt Hold work fine. But the drift issue makes it un-flyable!
The only thing that fixes the drift issue is resetting the board.
Then it works for 20-30s and then cant fly it anymore.
Running the level command and in-flight leveling doesnt do sh*t.


Views: 3717

Comment by Ellison Chan on January 22, 2012 at 1:29pm

Where the link to that firmware?  Maybe I'll have a look at it.

Comment by John Church on January 22, 2012 at 1:42pm

Ellison- Yep, I know. But, I was curious to see if we could move the drift   :)

Gareth- Thanks for doing that. I will be following to see what else you try and what conclusions are drawn by the master dev.s . 

Comment by Ruben Wijnhoven on January 23, 2012 at 2:15am

yours is also leaning left just as mine. You alreade did foam and change motor, etc. So I guess we can rule out vibation? As of now it appears all apm2 have this issue.  Chris when can we expect a solution? 

Comment by Ruben Wijnhoven on January 23, 2012 at 2:30am

just did some testing with just the board en the usb cable and mp. Pls connect your apm2 to mp and just twist the board from left to right for about one minute. The you see in MP on the horizon it start to lean more and more and it doesn't come level. I only twist it with my hand so no vibration. It looks like the board just looses it's levelness when twisted and moved about. After reconnecting all is level again.

Comment by Gareth Rens on January 23, 2012 at 2:47am

@Ruben: Thank God someone confirmed! I thought I was a moron, cause Jason and Chris said it was caused by vibration...

Comment by Ruben Wijnhoven on January 23, 2012 at 2:52am

Nope it's not vibration. it seems that if the board gets moved a lot it just looses it's levellnes more and more. As if the sensors output more and more errors. 

Comment by Ruben Wijnhoven on January 23, 2012 at 2:56am

Vibration you can solve this is a whole different problem.

Comment by Gareth Rens on January 23, 2012 at 3:15am

GOOD NEWS: I think they've fixed the drift issue. I just uploaded v2.2b4 via arduino.

I tried what Ruben said using MP and threw the quad round a bit. The level stayed the same.

Will do a flight test when I have a chance.


Comment by Ruben Wijnhoven on January 23, 2012 at 3:32am


Sorry but the test I did was on v2.2b4 that is the version that is now pushed by MP. So pls try. But the issue isn't solved. Take of your board and throw that one around. That way you get much faster movement than with the total quad in your hands. the issue is still there.

Comment by Ruben Wijnhoven on January 23, 2012 at 3:34am


You can also check git for changes. There has been no change for APM2 problem in latest firmware.


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