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Re: [Paparazzi-devel] Strange Surging Behavior

From: John Burt
Subject: Re: [Paparazzi-devel] Strange Surging Behavior
Date: Mon, 12 Jul 2010 11:03:58 -0700

Are you driving the servos and/or radio modem from the AP's power supply? If so 
then you are very likely overloading the PS and crashing the AP. Try powering 
all servos and modem using a separate power supply (such as a standard RC BEC). 
For good measure, you might wrap wires going into the AP in RF chokes. That has 
help prevent jittering for me.

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.
>Paparazzi-devel mailing list

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