SunFounder Digital Compass Module QMC5883L Chip Arduino Raspberry Pi The Honeywell QMC5883L is a surface-mount, multi-chip module designed for low-field magnetic sensing with a digital interface for applications such as low cost compassing and magnetometry The 12-Bit ADC coupled with low noise AMR sensors achieves 5 milli-gauss field resolution in 8 gauss fields Low voltage operations and low power consumption; supports built-in self-test Built-in strap drive circuits, I2C digital interface, wide magnetic field range (+/-8 oe) Working voltage: 3.3v-5v; PCB size: 1.3 x 2.3 cm (QMC5883L size: 3.0 x 3.0 x 0.9 mm), with a16-pin leadless chip carrier (LCC)