DIY headtracker for gaming (On Linux PC)

Building a DIY headtracker for gaming is fun. This is my take and it did cost me just 5 EUR. And it works on Linux PC thanks to Opentrack. For more immersion in my simpit! Originally posted at: https://beko.famkos.net/2021/07/08/diy-headtracker-for-gaming-on-linux-pc/