xaircraft x650 x450 AUTOPILOT GPS -S Electronic compass combo deal

you will get full set GPS and compass as first pic listed.
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(price match , please email to آدرس ایمیل جهت جلوگیری از رباتهای هرزنامه محافظت شده اند، جهت مشاهده آنها شما نیاز به فعال ساختن جاوا اسکریپت دارید )

installing reference:
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Following 3 step must follow:

1. Upgrading application software to version 1.1.5.414,
download address: 
http://www.xaircraft.com/wiki/images/7/7a/XAircraft_Configuration_v_1.1.5.414.zip

2. AHRS upgrade the firmware 1.20 (support COMPASS), Download:
http://www.xaircraft.com/wiki/images/7/7f/AHRS_1.20_en.xfw

3. Upgrade flight control version firmware to the 1.31  (support GPS and COMPASS),
Download from:
http://wwwxaircraft.com/wiki/images/e/ed/Flight_Controller_1.31_en.xfw

After completion of these upgrades,  then you can see the relevant GPS
and COMPASS control options in the software interface.
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Electronic compass installation:
Electronic compass (electronic compass) works the same as regular physical compass, are sensing the Earth's
magnetic field. The difference is that the electronic compass output is the electronic compass signal,

In electronic compass, there is a mark "Front" letter with triangle arrow,
the arrow pointing north of the Earth's magnetic field, electronic compass output is 0 degrees.

when install the Electronic compass , you need to note the following:
1: The electronic compass is sensitive to magnetic objects (such as magnets, motors, etc.),
magnetic objects (such as iron, steel, nickel, etc.) , electronic compass
installation location must be away from these objects.
2: The electronic compass is sensitive to current wire/cable,
especially in high current conductors (such as the battery power lines, electrical lines, etc.),
electronic compass installation location must be away from the conductor, in principle,
the larger the current from the wire should be Farther.
3: The electronic compass ---"Front" triangular arrows and AHRS "Front" triangular arrows --direction must be 
consistent .
4: the initial installation of an electronic compass, you need to calibrate the
electronic compass.  each time after changing the installation
position ,electronic compass is also proposed to re-calibrate .











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XAircraft Compass Installation