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!!)

GPS & Compass

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