Description: This is a breakout board for Honeywell's HMC5843, a 3-axis digital compass. Communication with the HMC5843 is simple and all done through an I2C interface. There is no on-board regulator, so a regulated voltage of 2.5-3.3VDC should be supplied.

The breakout board includes the HMC5843 sensor and all filtering capacitors as shown. The power and 2-wire interface pins are all broken out to a 0.1" pitch header.

Features:

• Simple I2C interface
• 2.5 to 3.3VDC supply range
• Low current draw
• 7 milli-gauss resolution

Dimensions: 0.5x0.5" (12.7x12.7mm)

Documents:

• Schematic
• HMC5843 Datasheet
• Example code (ATmega328)
• Digital Compass How-To Video
• mbed Example