3 replies to this topic

[tesco]

Hi All,

I have recently moved my gear over from my quad to an FPVManuals delrin tricopter build.

The arm lengths are 13(ish) inches long with dt750 motors on the ends turning 10x5 props.

Had it up in a hover today briefly to check all is well and the yaw servo seems to be overcompensating causing it to "wag its tail".
All other axis seem rock solid in attitude mode but I am unsure how to turn the gain(?) down to calm the yaw out.

Current settings on the Yaw are:
Kp 0.0135 Ki 0.0035 Ilimit 0.3

Any ideas?

Rich

Edited by tesco, 22 February 2012 - 09:31 AM.

[K Wells]

Please post screen captures of your settings...this will help us help you

[juz]

how about trying axis lock for yaw?

[tesco]

Think half of the trouble was that I had left the update rate on the servo at 400Hz
backed this down to 60 and the buzzing has gone, also changed the Pid settings down on the Kp until it stopped bouncing back and forth, set the Ki to the same number.
Now just waiting for the rain and wind to stop to try it out.

I will give axis lock a go and post pictures of my setup if it all goes wrong!