I do have some trouble. I've flown the 2.5 code a few times with a EM406 and it seems to work, sort of.
My problem is that i do not know there to start with the tuning.
In stabilize everything works perfect. No wing rocking or pitch oscillations. Really does work well, recovers fast after a dive. Banking is less than in manual but it does bank enough for gentle flying.
To me this means that the roll_P and Pitch_P should have the correct values.
If I try RTL mode it doesn't seen to work all that nice anymore. If I set the Heading_P value to the easystar default i get a lot of wing rocking(Left to right), it comes close to home but never really circles around it. It does semi-eliptical figures and ugly figure-8's ect(80m Radius) . If i decrease the heading_P it doesn't really return to home ever...
Altitude hold does not seem to work at all.(Note- I can't get a value for MAX AIRSPEED in the config tool. Only 1 as the value---- Altitude is correct though)
I have seen some of the users kml files and their circles seem to be near perfect on top of each other. Even in wind.
So to the people with the know how. Where do i start? Do i go back to the roll_p and increase it till it wobbles in stabilize or what.
Lets get a nice HOW-TO going to put in the wiki.
eg. Increase roll_P until oscillating, decrease by 80% and set.
Increase pitch_P until oscillating, decrease by 80% and set.
So, please do comment, but if you have advice, please give it as a step by step. It doesn't help anyone if the reply is only "Your gains are wrong, adjust it". Please explain it