Here’s a nifty project I found off of Hackaday - how to build your own 16 point (4bit) digital compass. Instead of using the popular 3bit Dinsmore compass the author decided to build his own.
The author attached a magnet to a reflective encoding disk. Using four infrared photoreflectors he was able
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/build-your-own-4bit-digital-compass