Discussions

Hi,

I have flown in 2 different ArduCopters now, one for a friend and my own. Have gotten good basic flight on both, and also reasonable GPS pos hold on mine, but: No matter how I try tweaking the altitude hold, it will not work properly for me.

Default value for altitude hold P causes the copter to bounce up and down. Reducing the value to only makes it drop a lot of height when switching from stabilize to loiter, but it keeps bouncing. I would have expected it to hang normally on throttle, and react more or less to height changes. Reducing the value to half once again just makes the effect even more pronounced (stamps the ground from a stable hover at 20m). Setting I max to 0 did not eliminate the bouncing.

How is it; is it supposed to just add to throttle stick value, or does it turn the throttle stick into a crane up/down lever? In the latter case, from which neutral point - the position of the throttle stick when altitude hold was activated, or the trimmed center point of the throttle stick?

Also, I remember having read somewhere in the passing that under some mode, the bottom half throttle range had one function, and the top half another? Or did I misread that? Relevant for this? I can not find the place where I read this any more.

Thanks for any clarification! If somebody also knows Mikrokopter, you can answer in that terminology; I know that reasonably well.

Regards

Soren