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Re: [Paparazzi-devel] Reply to:"Reply to:"Arudimu Integration Problem (R

From: Rafael Espino Gómez
Subject: Re: [Paparazzi-devel] Reply to:"Reply to:"Arudimu Integration Problem (Rafael Espino)"
Date: Fri, 4 Feb 2011 09:21:25 +0100

Hi Chris,

I tried thiis week disconnecting the modem and powering the servos with and external BEC and the result was the same.
Later, I tried to test with the airframe of other model and a remix between EasyStar and twinstar airframes.
The fast crazy movements disappeared!!! But I have still a little problem. You can see at this link:

The servos (aileron and elevator, not rudder) have a periodic movement of two or three pulses. This pulse is higher if the attitude is far from the objetive attitude. What is the problem? In MANUAL mode there isn't this periodic movement.

El 23 de enero de 2011 22:06, Rafael Espino Gmez <address@hidden> escribi:
Hi Chris,

Yes, I power the Servos from the TWOG 5V rail.
Tomorrow I will try the things you say:

-Power the servos from a external BEC.
-Disconnect the modem (XBEE PRO 2.4GHZ).
-Test with the IR sensors.

I'll report you the results.


2011/1/23 Chris <address@hidden>

Do you power the servos from a high amperage BEC or from the autopilot's 5v rail?
Generally it is a bad idea to power the servos (any servo in fact) from the autopilot's 5v rail.
Well if the elevator moves in AUTO1 (not AUTO2) without moving the rc transmitter stick then there is
a problem as in AUTO1 the elevator should only move if you move the plane or the rc transmitter stick.
If this is the case i can't think of anything else that could move the elevator other than a low voltage
source with small current ability causing a reset, bad wiring, rf noise from the modem
(you could try and disconnect the modem) or a defective unit.
Also if you have the IR sensors you could try and test the installation with those in order to isolate the
cause of the problem.

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