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:
9DoF Razor IMU M0 Hookup Guide
How to use and re-program the 9DoF Razor IMU M0, a combination of ATSAMD21 ARM Cortex-M0 microprocessor and MPU-9250 9DoF-in-a-chip.
APDS-9301 Sensor Hookup Guide
The APDS-9301 sensor is an I2C connected luminosity sensor which returns measurements in lux.
Qwiic UV Sensor (VEML6075) Hookup Guide
Learn how to connect your VEML6075 UV Sensor and figure out just when you should put some sunscreen on.
Display Distance Measurements On an OLED
This tutorial will take your SparkFun Qwiic Ultrasonic Distance Sensor to the next level by adding a cool little OLED display.