Hybrid Quizbowl Buzzers
I built these semi-wireless quiz bowl buzzers to replace my high school teams' aging wired set. The hybrid approach—wireless team stations with wired individual clickers—is more convenient than fully wired systems and scales more efficiently than fully wireless approaches.
The project uses three ESP32 based boards communicating via a uniderectional ESP-NOW link for robust low latency communication, and a custom autopairing algorithm to eliminate hardcoded MAC addresses in firmware. The receiver also natively hosts a web server that the reader can use to parse question packets, score matches, and track individual player scores.
Technical Overview
Development
Assembly
Conclusion
Gallery
