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:
Qwiic Atmospheric Sensor (BME280) Hookup Guide
Measure temperature, humidity, barometric pressure with the SparkFun Atmospheric Sensor Breakout BME280 (Qwiic).
Basic Autonomous Kit for Sphero RVR Assembly Guide
Get your Basic Autonomous Kit for Sphero RVR all hooked up with this guide!
Magnetic Levitation
This tutorial will show you how to build a magnetic levitation circuit using common parts.
MicroMod Weather Carrier Board Hookup Guide
A quick guide to help to create your own MicroMod weather station using the MicroMod Weather Carrier Board and Processor of your choice.