This is a fully integrated compass module that combines the Honeywell HMC6352 2-axis magneto-resistive sensors with the required analog and digital support circuits, microprocessor and algorithms for heading computation.

It comes as a kit with a 4-pin male header and a stack-through header- either one will work, and the stack-through header allows multiple sensors to be combined on the same analog Arduino pins as well.

The Compass Sensor maybe be used with the Arduino I2C Wire library or in a slightly more streamlined way, with the library below, which in turns, uses Wire library calls.

The chip that this sensor is based upon, has become hard and expensive to obtain. We are currently respinning this board to accommodate a more advanced version of this chip.

Applications

• Homebrew virtual reality & gaming systems
• Robotics and dead reckoning navigation systems
• Compassing & outdoor sports
• GPS confirmation
• Antenna positioning

Specifications

• HMC6352 chip
• 4-pin male header included
• 4-pin stack through header included
• Heading output (0-360 degrees)
• I2C 2-Wire Serial Interface
• 3 output modes: Standby, Query, and Continuous
• Heading accuracy: 2.5 degrees
• Heading resolution: 0.5 degrees
• Arduino pin compatible
• +5V Tolerant I/O

Arduino Pin Mapping

 The compass sensor has such low power consumption that two Arduino (Atmega) pins may be used for power.

Analog 2 = Ground
Analog 3 = Vin
Analog 4 = Data (SDA)
Analog 5 = Clock (SCL)

Resources

• LibCompass Arduino Library (also included in the Antipasto Arduino IDE)
• Honeywell HMC6352 Chip Datasheet
• Compass Module Demo @ Antipasto Blog
• Cheatsheet to get started in 5 minutes or less.

Media