3-Axis Magnetometer MAG3110
Freescale’s MAG3110 is a small, low-power, digital 3-axis magnetometer. The device can be used in conjunction with a 3-axis accelerometer to produce orientation independent accurate compass heading information. It features a standard I2C serial interface output and smart embedded functions. This board breaks out all of the pins for the MAG3110 to a standard 0.1" header and also supplies the necessary filtering capacitors so that you can easily use them in your next navigation project.
Note: You will need to use a logic level converter if you are using an Arduino Uno or a similar 5V logic device. Even if 3.3V is to be supplied to the VDD, an Uno putting out 5V logic can still fry this breakout.