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Re: [Paparazzi-devel] YNT: Rotate reference frame - Lisa/M 2.0 Aspirin 2

From: Markus Bina
Subject: Re: [Paparazzi-devel] YNT: Rotate reference frame - Lisa/M 2.0 Aspirin 2.2 - mounting the IMU correctly
Date: Mon, 09 Sep 2013 22:45:39 +0200
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8

Hi Refik,

Just three lines? That's really great! :-)


Am 09.09.2013 22:18, schrieb Refik Sever:
Hi Markus,

You can edit these parameters:

<section name="IMU" prefix="IMU_">
     <define name="BODY_TO_IMU_PHI"   value="-0.93" unit="deg"/>
     <define name="BODY_TO_IMU_THETA" value="10.71" unit="deg"/>
     <define name="BODY_TO_IMU_PSI"   value="0." unit="deg"/>

Then, check the PFD screen.

Kimden: Markus Bina address@hidden adına address@hidden address@hidden
Gönderildi: 09 Eylül 2013 Pazartesi 23:11
Kime: address@hidden
Konu: [Paparazzi-devel] Rotate reference frame - Lisa/M 2.0 Aspirin 2.2 - 
mounting the IMU correctly

Hi all.

A few days ago I finished assembling all the hardware for my first
"fixed wing"-configuration.
Since I'm still a RC/Paparazzi beginner I figured to start by using the
"Bixler"-airframe, which I can fly reasonably well without any
autopilot, for my first setup.

Basically, I would like to mount the autopilot (Lisa/M) with the long
side parallel to the fuselage, i.e. not like this
Thus I'd not have to make any permanent changes to my airframe (the
autopilot sits on a piece of acrylic (PMMA) in the CM fixed by velcro;
thus removeable)
and there wouldn't be any wires hanging out of the fuselage.
This would - imho - also ease the wiring.

How do I rotate the IMU/Autopilot reference frame in the airframe
configuration (XML) consistently for/in all subsystems
To mount the Lisa/M board with its long side parallel to the fuselage I
figured, one needs to swap X and Y axis and invert the Y axis.

*) Airframe: Bixler  -
*) Board: Lisa/M v2.0 with Aspirin v2.2 from Transition Robotics
*) GPS: ublox
*) Telemetry: xbee
*) Radio: Spektrum (9645)

Sorry, in case my question is somewhat basic.



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