HMC5883L is 3-Axis Digital Compass with 12-bit ADC that enables 1° to 2° compass heading accuracy. HMC5883L usses I2C communication interface and can connect to any board with UEXT. DOCUMENTS Main IC datasheet HARDWARE MOD-HMC5883L schematic in PDF format MOD-HMC5883L hardware source files SOFTWARE OLinuXino demo example OLinuXino + Python demo example