Tilt Compensated Digital Compass LSM303DLHC (3 Axis accelerometer + 3 Axis Magnetometer))

From the shop's description

The LSM303DLHC module is an based on ST sensor IC LSM303DLHC which features a 3D digital linear acceleration sensor and a 3D digital magnetometer (compass) sensor on single chip. The accelerometer is used for tilt compensation of compass heading, thus provides an accurate heading (angle from north) readings even at non zero tilt angle. The sensor provides 16 bit digital data output via I2C interface It also include embedded temperature sensor for temperature compensation and more accurate readings. The sensor can be supplied by either 3.3V or 5V. The sensor have countless applications starting from land and flight navigation, motion control and guidance, tracking, motion activation, pedometers, positioning and free fall detection. Notes Future Electronics recommend this sensor for accurate and serious heading (angle from north) measurments. Yet a good understanding of the tilt compensation is recommended for best use. Features 3 magnetic field channels and 3 acceleration channels Configurable magnetometer sensitivity from ±1.3 to ±8.1 gauss magnetic field full scale Configurable accelerometer sensitivity ±2g/±4g/±8g/±16g selectable full-scale 16 bit data output I2C serial interface Analog supply voltage 3.3 V to 5 V Power-down mode/ low-power mode 2 independent programmable interrupt generators for free-fall and motion detection Embedded temperature sensor Logic level shifter included Applications Tilt compensated compass Map rotation Position detection Vehicle (robot)motion guidance and control Motion-activated functions Free-fall detection Pedometer Display orientation Gaming and virtual reality input devices Impact recognition and logging Vibration monitoring and compensation LSM303DLHC sensor IC datasheet LSM303DLHC compass and accelerometer module Arduino tutorial Excellent application notes from STMelectronics on LSM303DLHC module (for serious users!!)