QMC5883L - external compass for DIY

QMC5883L is a magnetometer that serves as an electronic compass. The module can be powered by 5V and communicates via I2C bus. 

This model is not supported by firmware Ardupilot, Betaflight, or iNav for use on a drone with a flight controller. The magnetometer can be used in DIY projects with Arduino and other MCUs.

Code for Arduino