Re: [Paparazzi-devel] a direction question about lisa/m 2.0 board

[Balazs GATI]

Hi,

yes, x is the first (generally front) direction and z looks toward you 
in the picture while looks downward in a normal airframe. But later you 
can define its direction relative to the airframe in the airframe config 
file.

At first the directions of the IMU are important (not that of the Lisa 
board or the airframe). But unfortunately I don't have too much 
experience with Aspirin calibration yet, because we are using xsense 
sensor with its own calibration tool.

Regards,
 Balazs


2017.03.08. 9:20 keltezéssel, Hao Zhang írta:
> Hi Balazs!
> thanks for your reply.
> you are right, on the Aspirin IMU wrote axis as below:
>
>          x
>          |
>          |
> y-------N
>
> so the x point is the front, right?
>
> and my another question whitch is the upside in the calibrating the
> accelerometers.
> is the lisa/m board upside or the Aspirin IMU board upside?(you know
> that they are opposite)
>
>
> 2017-03-08 14:44 GMT+08:00 Balazs GATI <address@hidden>:
> > Hi,
> >
> > you should look at the tiny arrows on the Aspirin IMU on the bottom side of
> > the Lisa board. The picture you sent shows the bottom side of the board, but
> > without the Aspirin IMU.
> >
> > Balazs
> >
> >
> > 2017.03.08. 5:59 keltezéssel, Hao Zhang írta:
> > > Hi,everyone.
> > > I am a beginer,i am building my first quadcopter now.
> > > according wiki page
> > > ImuCalibration(http://wiki.paparazziuav.org/wiki/ImuCalibration),
> > > calibrate my lisa/m 2.0 board.
> > > but i can not distinguish board's front and upside.
> > >
> > > plz look at this pic:
> > > http://tinypic.com/r/doumhc/9
> > >
> > > i think below picture is the upside, and the arrow is the front.
> > > is that correct? thank you.
> > >
> > > plz look at this pic:
> > > http://tinypic.com/r/2pre6nb/9
> > >
> > > _______________________________________________
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> >
> > --
> > Balazs GATI, PhD
> > associate professor
> >      Department of Aeronautics, Naval Architecture and Railway Vehicles
> >      Budapest University of Technology and Economics
> >
> > Address:   Budapest
> >           Stoczek u 6. J. ép. 423
> >           1111
> > Tel:       +(36)-1-463-1960
> > Fax:       +(36)-1-463-3080
> > Homepage: http://vrht.bme.hu/
> >
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>
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--
Balazs GATI, PhD
associate professor
     Department of Aeronautics, Naval Architecture and Railway Vehicles
     Budapest University of Technology and Economics

Address:   Budapest
          Stoczek u 6. J. ép. 423
          1111
Tel:       +(36)-1-463-1960
Fax:       +(36)-1-463-3080
Homepage: http://vrht.bme.hu/