The LSM303 breakout board combines a magnetometer/compass module with a triple-axis accelerometer to make a compact navigation subsystem. The I2C interface is compatible with both 3.3v and 5v processors and the two pins can be shared by other I2C devices. Combined with a 3-axis gyro such as the L3GD20, you have all the sensors you need for a complete IMU (Inertial Measurement Unit) for use in aerial, terrestrial or marine navigation.
In this tutorial we will show you how to connect the LSM303 to an Arduino and use it to measure orientation relative to the earth’s magnetic field, and acceleration in three axis.
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