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Re: [Paparazzi-devel] Strange Surging Behavior

From: Felix Ruess
Subject: Re: [Paparazzi-devel] Strange Surging Behavior
Date: Mon, 12 Jul 2010 20:15:00 +0200

Hi Jeff,

to me that sounds like your servos are drawing too much power with the
more rapid corrections of the AUTO modes. Especially since it works if
you have one or two disconnected.
If the servos draw too much current the voltage will break down and
the twog probably resets.
I would recommend to check that and maybe use an extra power source
for your servos.

Cheers, Felix

On Mon, Jul 12, 2010 at 7:07 PM,  <address@hidden> wrote:
> Hello All,
> I am experiencing some strange behavior from my TWOG after uploading a new
> airframe file. I originally had the easystar2.xml uploaded and installed in
> my easystar and had great results, we flew basic flight plans in auto2.
> I have now installed the system into my Multiplex Cularis and have uploaded
> the attached airframe file (I got it from Maik, originally from Hendrix) and
> am experiencing some strange behavior. The problem occurs in both auto modes
> and also when switching modes. The system seems to get lost in surging
> cycles that last from 2 to 30 seconds. The ailerons, rudder and elevator all
> jolt about once per second and all radio control and telemetry communication
> are lost during the surging cycles.
> Interestingly, if I unhook my ailerons, the problem disappears. And
> strangely, if only ONE aileron is hooked up, everything works as it should.
> Only when I plug in both ailerons do I get the erratic behavior. When I move
> my hands around the IR sensors the control surfaces move as expected, but
> then the system will suddenly go into the described jolting cycle for 2-30
> seconds, then return to normal.
> I have attached my new airframe file, as that is the only difference I have
> made from my previous successful settings.
> Any help is greatly appreciated.
> Thanks,
> Jeff
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