What happen:
1.After succesfull PID tuning (manual) - pitch,roll, althold,loiter- rock solid but battery must change to continue tunning.
2. Landing, checking PID value. roll and pitch 0,2 P value
3. Changing battery
4. checking PID value - increase P on Yaw - (rubber yaw) change 0,3 to 0,32 o P
5. arming and takingoff then copter (8kg X8) behaved like 0 P on roll and pitch like newspaper on strong wind :(
6. Crash on his back.
I've studying logs and found nothing significant that could be the reason of it
Could someone help me understand what happen, please?
Bin and log
https://mega.nz/#F!W1JWhJhB!NUpZjJbcewZcSvC11qNyEw6
PS. after re -uploading FW and start setting up from the beegining, it's same like pt.5
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