Discussions

Problem: Stabilize mode gain/elevon throw doesn't match manual gain/throw

Posted by Adam Haggerty on May 24, 2012 at 6:17am

I am configuring apm2 on my Zephyr2. I have the throws down to about +-35% on my futaba9c. In mission planner I configure, and then set the endpoints for each channel. I save and boot up the plane in manual mode... reduced throws work perfect! I switch to stabilize mode and the apm2 supplies FULL servo range nearly bending my pushrods.

How do I get stabilize, RTL, automission, (every mode) throw values to match the limits of manual mode? I want all the flight behaviors to match.

Thanks.

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

Join diydrones

Email me when people reply –

Replies

Jake Stew May 29, 2012 at 11:41pm

Why not just set up your servos normally? Is there some advantage to your setup?

If I understand you right you want the radio calibration to understand that your full range (as sent to the APM) is actually only 70% of what the total range should be?

If I understand right then it isn't really an issue with the software. What you should do is set your radio to normal mode (100% range), calibrate it in APM, then switch your range back to +-35%.
Peter Eriksson May 29, 2012 at 10:28pm

But that is on apm 1
Peter Eriksson May 29, 2012 at 10:27pm

On my zeph it is ok, but I think I had this problem when I tried for the first time. I did some searching on the forum and found that doing radio calibration with full throw and no expo would help.
I tried and it worked.........I'm not sure about my software version, I bought it preloaded from Udrones a couple of weeks ago.
Developer

Doug Weibel May 24, 2012 at 7:04am

Hi Adam,

I just verified your report and find the same behavior. I have not looked at elevon mixing since last fall and don't remember this behavior in earlier revisions.

I have submitted it as an issue to the issue tracker to get it on the dev team's to do list.