How to Build a Production-Ready TSL 3.1 Tally Light with ESP32-S3 + W5500 Ethernet?

This project builds a wired-first tally light that listens to TSL UMD v3.1 multicast UDP and drives a 7-LED WS2812B strip

viktor

Published January 16, 2026

168 UCC

20 WCC

42 VAR

Original author: Richard BurfordOriginal source (new tab)

Components

Hardware components

WIZnet - W5500

x 1

WIZnet parts

W5500 Datasheet

Project description

Project introduction: what this repo actually implements videojedi/esp32-s3-tally is an ESP32-S3-based tally light designed for live production environments where reliability matters more than “it usually works.” The device receives TSL 3.1 protocol tally updates via multicast UDP, then maps that state to clear on-camera indicators (Off / Green / Red / Yellow). Operationally, it’s closer to an “appliance” than a dev demo: it prefers Ethernet first, falls back to Wi-Fi if needed, and can enter a configuration AP mode with captive portal if neither is available. It also exposes a browser UI…

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