Discussions

excessive throttle out on Altitude Hold

Posted by Javier Diaz on September 15, 2014 at 5:25pm

I've changed from 3s to 4s, and started on Stablize, it was ok, then when I changed to Altitude Hold, it started to gain altitude very fast, then I got it back down to stabilize, then It did the same in loiter, it was a very cloudy day, I noticed the gps signal to be quite glitchy

My setup: 1kg 450mm quad frame, 9X4.7 props, 30A Turnigy plush ESC, 1000kv 300watts motors, APM 2.5 and AC 3.1.5

2014-09-13 11-17-22.log

2014-09-13 11-06-12.log

image.jpg

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –
Follow

Replies

  • Johann van de Venter September 16, 2014 at 4:52pm

    Did you do ESC calibration after changing from 3S to 4S?

    I found that when I change between 3 and 4S and back again, I have to ESC calibration. 

  • Javier Diaz September 15, 2014 at 5:33pm

    I think I should adjust Throttle Accel P, I and Altitude Hold P, but I'm not sure how

    These are the PID values I've got after using Autotune on 3S Battery

    X450 3s APM PIDs.jpg

This reply was deleted.

Activity