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Re: [Paparazzi-devel] Strange Servo Deflection Problem

From: Chris Wozny
Subject: Re: [Paparazzi-devel] Strange Servo Deflection Problem
Date: Sat, 28 Jan 2012 11:59:24 -0700


That is correct, I'm building against paparazzi dev branch. I believe
the radio channels are correct because the sticks all correspond to
what I want them to do. Left stick vertical is throttle while
horizontal is rudder, right stick vertical is pitch while horizontal
is roll (the only thing that is off is that pitch down only moves the
control surfaces down about 5% of the control surface movement when
pitching up.) The only thing I don't know about is any of the
switches, they don't seem to correspond to anything I've set in the
T7cap configuration since currently switch B controls the APs mode.
You are right about the autopilot section looking funky, our aircraft
is a VTOL fixed wing so for AUTO1 we'd like to fly it with a certain
altitude or just hover at a certain attitude. We haven't actually been
able to test those AP modes since we're still trying to get it to fly
in manual. Any thoughts or comments on the servo deflection, or
anything else for that matter would be appreciated!

University of Arizona MAV

On Fri, Jan 27, 2012 at 8:10 PM, Andre Devitt <address@hidden> wrote:
> Have you looked at the commands message in the messages window?
> Maybe radio channels are configured incorrectly. I think throttle is clipped
> to positive only, and if throttle radio channel was being interpreted as
> pitch might see that behavior.
> Some sections of your airframe file are also only relevant for rotorcraft
> firmware, not sure what you used as template. The AP mode section stuck out.
> This airftame file is building against current github paparazzi-devel head,
> correct?
> On Jan 27, 2012 7:48 PM, "Chris Wozny" <address@hidden> wrote:
>> All,
>> For some reason I have good range on my deflection for my servos when
>> I roll. When I pitch up, the deflection is also good and just how I
>> want it. However, when I pitch down, my servos barely move from
>> neutral. Has anyone run into this situation before? It's got to be
>> some sort of pitch gain somewhere, but I'm flying in MANUAL. I've
>> linked copies of my airframe and my radio file here:
>> Best,
>> Chris
>> --
>> University of Arizona MAV
>> _______________________________________________
>> Paparazzi-devel mailing list
>> address@hidden

Chris Wozny
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