I meant to say in my first sentence that the external wind from 302 is
noticeable more accurate and responsive than the internal XCSoar wind
calculation (not internal 302 calculation).
Ramy
>________________________________
> From: Ramy Yanetz <ryan...@yahoo.com>
>To: Horst Rupp <ho...@rupp-family.de>
>Cc: "<xcsoar-user@lists.sourceforge.net>" <xcsoar-user@lists.sourceforge.net>
>Sent: Wednesday, May 30, 2012 8:39 AM
>Subject: Re: [Xcsoar-user] Connecting CAI302 via IOIO-Box
>
>
>I am using the external wind from my 302 and it is noticeable more accurate
>and responsive than the internal 302 calculation. If you get wrong readings
>your 302 airspeed may need calibration. Also the temperature sensor needs to
>be working correctly to be able to calculate TAS correctly.
>
>
>Having said that, I wish the 302/XCSoar were capable to calculate wind changes
>instantaneously when flying in straight lines. I believe most flight computers
>can't since it requires compass data. When flying in convergence over mountain
>terrains as we mostly do where I fly, wind direction keeps changing all the
>time and it is crucial to know the direction especially when getting below the
>ridges.
>
>
>Ramy
>
>
>
>
>On May 30, 2012, at 6:02 AM, "Horst Rupp" <ho...@rupp-family.de> wrote:
>
>
>Hello,
>>
>>when connecting my CAI302 via a home-made IOIO-box to my STREAK, I can see
>>under Config 3/3 what data is transferred to XCSoar. This indication does NOT
>>say that wind is transferred.
>>Is there simply no more room to denote “wind” on the line (it is pretty full)
>>?
>>Or is wind data really not transferred at all ?
>>
>>The reason behind my question is :
>>I had a discussion with Turbo the other year saying that wind data visible on
>>SeeYou was very accurate whereas wind data on XCSoar was not, with respective
>>devices connected to CAI302. His remedy was : Have you configured XCSoar to
>>obtain wind data from the CAI ?
>>I made sure I had, but my wind data still seemed to be questionable. There
>>was always a large difference between circling wind and diving wind, most of
>>the time a factor 1.5 to 2 between the wind speeds, whereas direction did not
>>differ much. On SeeYou wind was much more stable between circling and diving,
>>also using wind data input from the CAI302. I have an itching that XCSoar
>>does not at all get wind data from the CAI, and calculates its own wind
>>instead.
>>
>>Now back to initial question : Does anybody have an idea, how I can find out
>>what XCSoar actually does ?
>>
>>Cheers Horst
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