Description: This is a breakout board for Honeywell's HMC5883L, a 3-axis digital compass. Communication with the HMC5883L is simple and all done through an I2C interface. There is no on-board regulator, so a regulated voltage of 2.16-3.6VDC should be supplied. The breakout board includes the HMC5883L sensor and all filtering capacitors as shown. The power and 2-wire interface pins are all broken out to a 0.1" pitch header(Get it from here ). Features: * Simple I2C interface * 2.16-3.6VDC supply range * Low current draw * 5 milli-gauss resolution * Dimensions: 0.7x0.7" (17.78x17.78mm) Find an example code for Arduino Board (Click Here )