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Re: [Paparazzi-devel] reply to "Funjet with Futaba T6EXAP radio (Bernard

From: Bernard Davison
Subject: Re: [Paparazzi-devel] reply to "Funjet with Futaba T6EXAP radio (Bernard Davison)"
Date: Sun, 14 Jun 2009 10:38:23 +1000

Thanks Chris,

That's got it working as I had through it should have been. :-)
So all mixing is done in the airframe config / autopilot software.
I assume now that any tuning of servo positions I should do in the airframe config file?


On 14/06/2009, at 2:17 AM, chris wrote:

I think i know what you are doing  (thinking) wrong.
The lines:
<servo name="MOTOR" no="0" min="1000" neutral="1000" max="2000"/> <servo name="AILEVON_LEFT" no="2" min="1130" neutral="1500" max="1880"/> <servo name="AILEVON_RIGHT" no="6" min="1980" neutral="1515" max="1170"/> Those servo numbers refer to the paparazzi autopilot board servo outputs and not
to the transmitter radio.
Set up your transmitter for a normal single channel aileron model with no mixing what so ever. Do not use any mixing from your transmitter as the elevon mixing is done in the airframe file. In the radio.xml file make sure that the transmitter channels correspond to those of the
radio.xml file.
If your transmitter has aileron on channel 1, elevator on channel 2 and throttle on channel 3
the radio.xml file should read something like that:

<!DOCTYPE radio SYSTEM "radio.dtd">
<radio name="Futaba T6EXAP" data_min="900" data_max="2100" sync_min ="5000" sync_max ="15000"> <channel ctl="1" function="ROLL" max="1074" neutral="1526" min="1942" average="0"/> <channel ctl="2" function="PITCH" min="1109" neutral="1520" max="1938" average="0"/> <channel ctl="3" function="THROTTLE" min="1933" neutral="1933" max="1107" average="0"/> <channel ctl="4" function="YAW" min="1937" neutral="1524" max="1103" average="0"/> <channel ctl="5" function="GAIN1" min="1100" neutral="1500" max="3000" average="1"/> <channel ctl="6" function="MODE" min="1900" neutral="1500" max="1100" average="1"/>

Finally connect the left elevon to paparazzi servo 2 and the right elevon to paparazzi servo 6
molex connector.

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