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PID Tuning?

Posted by Dean on August 17, 2013 at 4:33am

I have a octo and managed to get it out for a few flights today in between the damn rain!

I am new to PID tuning, and have very little experiance. Can anyone point me in the direction to a good (not too complicated) guide on PID tuning? Heres my story....

My first build with APM 2.5 was great. All default PIDS and it flew absolutely flawlessly. There were a few issues with the baro etc which took a bit of playing with to get right, eventually all worked PERFECTLY.

Regretfully, i sold this build. I now have a droidworx AD-8 and have put another APM 2.5 on, only this one is SUPER unstable. Ive tried both 2.9.1b and 3.0.1 and it is not at all stable nor does it hold its alt.

Is this PID tuning and why is the default PIDs so off?

Ive just been trying for so long now to get some decent footage like that i see on youtube but i can never get my builds working since my first.

Im kind of thinking towards a QAV400 or QAV500 with Naza M but i prefer the APM over the Naza as its WAY more flexible and feature rich!

Thanks!

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Replies

  • Stone1295 August 17, 2013 at 4:54am

    Have you taken a look at the tuning guide in the Instructions area?  They've been revising it a lot lately and it gives a pretty good idea of the cause and effects of what certain values do.

    http://copter.ardupilot.com/wiki/tuning/

    -Mike

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