Ok, my stab is good with a big OCTO (tarot ironman) but the altitude hold is instable, sometimes when I turn it on it goes down like a rocket, sometimes it goes up and other times it just holds but not so good going slowy up and down.
Please can someone help me? What pids I have to look and change? I did read some texts on internet but no luck.
Replies
You said altitude hold is instable "sometimes". After me this is not PID related.
Check your foam which cover the Baro. Humidity could influence. Do you have Sonar also? Try to disable it.
When I did have similar issue like you, what helped me it was to reinstall the same firmware 4-5 times maybe more (with erasing/reset on each). Then all setup again.
At some moments become stable.