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RE: [Paparazzi-devel] Arduimu Integration Problem

From: address@hidden
Subject: RE: [Paparazzi-devel] Arduimu Integration Problem
Date: Wed, 9 Feb 2011 12:55:18 +0000 (GMT)

Hi Rafael,

Seems to be normal. My servos behave the same in MANUAL, in AUTO1/2 they're 
dead solid. Seems to be the PPM 
Encoder, allegedly there is a new version out there with new hw/sw which solves 

In the mailing list i found this 
statement of the creator (hendrix aka chris e);

This seems to be the explanation, however 
i never could be bothered to order a new one so i fly with jittering, no 
relevant problems at all.



----Ursprüngliche Nachricht----
Von: address@hidden
Datum: 09.02.2011 09:24
An: <address@hidden>

Betreff: [Paparazzi-devel] Arduimu Integration Problem

Hi all,

Does anybody know about this problem?

Are these periodic pulses normal?



El 4 de febrero de 2011 09:21, Rafael Espino Gómez

> 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 Gómez <address@hidden>escribió:
> 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.
>> Rafa.
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.
>>> Chris
>>> _______________________________________________

>>> Paparazzi-devel mailing list
>>> address@hidden

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