The Compass Board is a small board containing the HMC5883 3-axis compass module by Honewell. The chip can be configured to 8 different sensitivities, from 0.9 to 8 Gauss full-scale, with read-outs up to 160 times per second. There is a “CompassBoard” class in the JeeLib library to interface with this sensor and read out all three on-board