MicroView Digital Compass
Contributors:
AGlass0fMilk
AGlass0fMilk 
Resources and Going Further
There are a many more cool projects you can make with the MAG3110 sensor. If you combine the MAG3110 with a few other sensors, you can make a variety of projects that involve location and orientation sensing.
Check out Shawn Hymel's Adventues in Science: Using a Magnetometer as a Compass and example code for ideas:
For more sensor fun, check out these other great SparkFun tutorials:
ISL29125 RGB Light Sensor Hookup Guide
A guide to help you integrate the ISL29125 RGB light sensor breakout board into your electronic projects.
Arduino Weather Shield Hookup Guide V12
Read humidity, pressure and luminosity quickly and easily. Add wind speed, direction and rain gauge for full weather station capabilities.
Qwiic VR IMU (BNO080) Hookup Guide
Figure out how things are oriented with the robust 9 degrees of freedom (DOF) BNO080 IMU. Maybe even make your own virtual reality (VR) applications if you're feeling savvy.
Getting Started with Machinechat
Organize and display your data with SparkFun's Artemis OpenLog and MachineChat's JEDIOne!