Problem: Stabilize mode gain/elevon throw doesn't match manual gain/throw
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.
Replies to This Discussion
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DeveloperPermalink Reply by Doug Weibel on -
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.
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Permalink Reply by Adam Haggerty on -
Thanks so much Doug! Looking forward to flying my zeph!
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Permalink Reply by Adam Haggerty on
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Another question Doug, how long should potentially expect to wait for this fix? No exact quote needed, but days/months etc. I'm not sure where to track the dev progress.
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Permalink Reply by Adam Haggerty on
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Is this issue going to get lost in the to do list or fixed soon. I'm no expert on the dev/issue process, but I need to know if I can fly the zephyr within the next couple weeks or I am going to return my apm for not functioning as advertised.
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Permalink Reply by Airfoto.se on -
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.
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Permalink Reply by Airfoto.se on
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But that is on apm 1
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Permalink Reply by Jake Stew on -
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%.
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Permalink Reply by Adam Haggerty on
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The zephyr is very sensitive to control surface throw. It only needs about +/-35% range to fly great. I never want my elevon servos to rotate outside of that range.
The problem is, the apm gives +/-100% throw in any assisted/auto mode. So for example if I enter stabilize mode the servos will rotate way too far even to the point of crushing the foam body a bit.
I have set radio calibration (read original post) and it reads correctly. The problem is it doesn't use that "learned range" when making decisions. It sends out full pulse width instead.Doug agreed it's broken software at the moment, I just wanted an ETA when it will be fixed.
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Permalink Reply by Anthony Dao on
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I had the same issue. I just changed RC1_MAX=2000, RC1_MIN=1000, RC2_MAX=2000, RC2_MIN=1000. Works much better now. You can play with the values until you get the desired throws.
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