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DMX-Unit-DIY: W5500 Art-Net node and 2-universe DMX512 controller on ESP32-S3

An ESP32-S3 DMX box that receives Art-Net over UDP 6454 through a W5500 and drives two DMX512 universes via MAX485, for about $29,33 in parts.

josephsr

Published September 30, 2026

Original author: GLOXIOUOriginal source (new tab)

DMX-Unit-DIY: W5500 Art-Net node and 2-universe DMX512 controller on ESP32-S3

Components

Hardware components

WIZnet parts

Project description

Overview DMX-Unit-DIY is a self-built stage-lighting controller box in which a WIZnet W5500 receives Art-Net over Ethernet, an ESP32-S3 decodes and routes the lighting data, and two MAX485 transceivers drive up to two DMX512 universes out of panel-mounted XLR connectors. The repository states the motivation directly: "The goal is to not pay hundred of dollars on a already existing product, and learn !", and adds that "DMX Unit DIY is also intended to be a hardware platform for a future open-source lighting-control system." Besides the Art-Net path, the unit accepts USB-C and Wi-Fi input…

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