Tested with latest Arduino Beta  1.5.8


copy to edtracker.zip  to Arduino/hardware/  and unzip

So should end up with


	Arduino/Hardware/edtracker/...   etc



In Arduino IDE select Tools->Board->Edtracker EDTracker 2


These sketches use a fork of Richard Barnett's sensor fusion library (originals available here https://github.com/richards-tech/RTIMULib-Arduino)

N.B. Sketch uses 'auto-bias on startup' method of calibration so keep still for a few seconds when pluggin in.


Values to play with on RTIMULib (see comments in code);


RTFusionRTQ.cpp

	RTQF_QVALUE
	RTQF_RVALUE


RTIMU.cpp
	
	COMPASS_ALPHA  - controls low pass filtering on compass value