Mission Planner says autotune is active, but nothing happens

Log Analysis -- deprecated Copter Logs -- deprecated
1

Hi folks,

DJIF550, 3DR Pixhawk, v3.2.1, trying to use autotune in alt hold mode.

Telemetry says autotune is ENGAGED, but I swear nothing happens…there is none of that “rhythmic twitching” like I see in the autotune videos.

I’ve tried 3 times now to get autotune to do something, but nothing is happening.

Ideas?

Thanks…

2

do you use transmitter trims?

3

No I don’t use trims.

After some investigation into what could be wrong, I am not sure I have had the throttle perfectly centered when engaging auto-tune (alt hold, as we know, just needs the throttle between 40 and 60 percent (typically), to maintain altitude).

So I am going to try again today with the throttle perfectly centered.

That kind of detail, if it’s true and works, really ought to be on the arducopter autotune page:

copter.ardupilot.com/wiki/autotune/

4

Just wanted to say I carefully centered the throttle in alt mode today, and whadaya know, autotune successfully engaged.

Question…how long does it normally take autotune to complete?

Thanks…

5

How long does it take? I’ll just say, make sure you have a fully charged battery! :smiley:

6

So is that maybe 10 minutes? 15?

Thanks…