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:
Vernier Photogate
Vernier Photogate Timer -- using the Serial Enabled LCD Kit.
SparkFun Pulse Oximeter and Heart Rate Monitor Hookup Guide
Find out your oxygen saturation level or check out your heart rate using the MAX30101 biometric sensor and MAX32664 Biometric Hub via I2C!
Air Velocity Sensor Breakout - FS3000 Hookup Guide
Get started with the Air Velocity Sensor Breakout - FS3000!
MicroMod Environmental Function Board Hookup Guide
The SparkFun MicroMod Environmental Function Board adds additional sensing options to the MicroMod Processor Boards. This function board includes three sensors to monitor air quality (SGP40), humidity & temperature (SHTC3), and CO2 concentrations (STC31) in your indoor environment. To make it even easier to use, all communication is over the MicroMod's I2C bus! In this tutorial, we will go over how to connect the board and read the sensors.