"Hi !
Please see a log attached, showing how i keep swithcing to loiter and "saving" the Hexa by switching back to alt hold as it wanted to fly away.
Any help ?

Greetings,

Nils2015-05-29 21-17-41.7z"

"HELP :-)
(aka "bump")
Is there no kind soul that can put me on the right tracks to this problem ?
I cannot find a reason why Loiter is so all-over-the-place.
I tried to gather facts in the postings above, if there is something missing to help me,…"

"Hi again,
i erased the EEPROM with arduino IDE, flashed 3.1.5 and redid calibrations.
Same Problem, all looks fin but as soon as i activate Loiter the Hexa tries to "run away".
Again i looked at the logs: started out with 8 sats, went to 10 sats…"

"Hi !
Meanwhile i checked the log again and can be 100% sure that the GPS Position itself is perfectly precise when i activated Loiter (I am using the APM Analyzer Software). So in my last test flight where i engaged Loiter 9 times (with harsh…"

"I dloaded old Mission Planner versions -> e.g. version 1.3.5 is showing an animated coordinate System and sample points. No "error 99" or the like, everything okay.
So newer MP's must be buggy, right ?

Greetings,
Nils"

"Hi !
I am having the same situation.
I am using a 2.6 APM with external GPS/mag (Crius APM clone & Ublox 8).
When calibrating it does not rotate the coordinate systems and does not show points.
It also has the error 99 on both mags.
But if i am…"

"Hi !
After a much better weigth distribution and several autotuning runs AND adjusting the YAW Gains (increasing them) i have a nice behaviour now !
If i take a look at Yaw vs. desired Yaw i still can see a +- 1 degree "alternating" curve in yaw…"

"Hi Luke,
that sound like my current craft !
GPS works fine and on the ground MP shows the correct heading and Motor Interference is <1%.
But The Analyzer shows the same "no mag data" stuff and i have GPS glitches every 3 minutes or so.
BUT my loiter…"

"This is the Top view, i *assumed* the cog is on the axis of the top and bottom motor (or in APM speech: on the M2-M1 axis).
This is where it is balanced right now.
I guess i have to push the battery further backwards.

Is there a good site…"

"Oh damn, if the chan corresponds to the RCout pins i can see what you are seeing.
5 & 3 are on high load which are the front ones, 4 & 6 are lazy, geeeez whoever found it funny to have 2 ways of numbering the motors is to blame  ;-)

I will check if…"

"Hi !
Hmm, its my first hexacopter in this "spider" configuration, but the COG should still be in at the intersection of all motor axis, right ?
Because thats how i trimmed it :-) Would be funny if its THAT stupid.

Yaw --> tuning: Do you mean PID…"

"Hi !
Thank you for the quick answer. I am fine with 3.2.1. I guess i will wat for a killer feature and then upgrade to Pixhawk. APM 2.5 & 2.6 clones are now sold for < $40, WOW :-)

Nils"

"Hi !
Would it be possible to compile for APM when disabling some of the options ?
(In the .h file only flash savings are mentioned, no idea of CPU and RAM savings).

Any hope for that ?

Greetings,

Nils"