This project is a cheap semiconductor particle detector for educational purposes. The goal was to be able to have it manufactured in small quantity for less than 10$ per board. I was inspired by the CERN DIY particle detector, but wanted to make it more accessible and simpler to use. One of the main things to improve was the noise performance. In an educational setting, resolving all potential noise from issues like ground sources can be very insightful, but also super overwhelming. By placing the digitiser directly next to the analog electronics on a pre-assembled PCB, most of these issues should be resolvable. Apart from the educational purposes, I've noticed this is quite a nice business card for me: It represents my physics background, electrical engineering skills and also my interest in sharing knowledge. All while matching the form-factor of a business card. Hardware and software files can be found on GitHub: https://github.com/timbk/BetaBoard