I am trying to get the tuning for my 1.3kg quadcopter with 11x5 props and 75cm motor distance right but can´t get it to fly perfectly. In this video you can see that my quad somehow tends to swing a little bit when I let got the roll/nick stick and the quad tries to stabilise itself again.
Furthermore after yawing in one direction, the quad yaws back a little bit in the opposite direction after centering the control stick again.
And I can´t get the quad to perfectly level somehow although I did level it several times - can´t use auto-trim atm because of a strong wind that´s going on here for several days.
Additionally, I crashed during the flight shown in this video because the copter got into his own downwash as it seems and reacted by suddenly rolling to the left.
I would really appreciate any help on this topic because I´m new to APM and the tuning possibilities are quite vast.
im still fairly new to this myself, but have been getting to grips with PID tuning recently and have been getting some very good results with a much heavier Hexa. although the values will be different due to different weight/props/motor distance the underlying concepts should hold true, so i hope it can help a bit.
the main values you need to concentrate on are the RATE settings, if you have a variable channel 6 the best is to assign the variable youre working with and set max/min values so that you can return to your "known" value in the centre of the dial. make sure the value is being changed before taking off as i have found some of the options to be broken recently (RATE D tuning doesnt work in 2.5.3 and nearly cost me a heavy crash)
as for the yaw rebound i too am looking for an answer to this question (http://www.diydrones.com/forum/topics/yaw-rebound) and havent made any real progress yet trying to tune it out.
That crash at the end...could it have been caused by low voltage? I know my quad goes a little crazy when the voltage gets too low.