220mm autotune = battery die

[Moksh (Moksh Patel)]

Hello everyone today I’m moving on 220mm fpv but when I install pixhawk and start is very bad flying (oscillations) ao I’m search for nearly pid value
(i know i need autotune but there is very very high oscillation so I can’t run autotune) and I’m found this thread

Arducopter on Small Quadcopter

I have been trying without success to use ArduCopter on a 250 mm size quadcopter. It’s actually a bit “dead cat”, 200 mm across the props from side to side and 155 mm from front to back. I’ve build several quads of sizes between 450 mm and 650 mm and they all fly well on the default settings. I realise that the settings have to be quite a lot lower for a small quad but I still cannot get it to fly without developing violent oscillations, particularly in pitch. I’ve tried settings that others ap…

And this value put in my pix

INS_GYRO_FILTER,80
ATC_RAT_PIT_FILT,40
ATC_RAT_RLL_FILT,40

But after realize INS_GYRO_FILTER 80 is not good so I change to 230 it’s like a smooth and going to ground and realize autotune

First attend :- After 2 minutes battery warning starting , I’m shocking (I’m thinking battery is not fully charge)

Second attend :- same problem nearly 2 minutes my copter dropped from 1m (and when I saw battery voltage 1st cell volt is 2.90v and … And battery tooo hot also puffy )

Is it possible to my pixhawk is not center ?

Motor :- 2700kv
ESC :- 40A 4 in 1
Battery :- 4s 1500mah 100c

And main thing motor is toooooo hot every time , why ?

Any suggestions , ………

Thank you

[Moksh (Moksh Patel)]

Here is flight log

5inch goes wrong.zip

Also my puffy battery photo

Also some photage of my first flight

Thank you