This build turns an ESP32 into a web-controlled signboard. You type text into a web page, it travels over WebSocket to the ESP32, and the ESP32 scrolls it across an FC-16 LED matrix. It's a neat way to see how a browser, a web server running on a microcontroller, and a physical display can talk to each other in real time.

The full tutorial, with every detail and the line-by-line code explanation, is on our site: ESP32 - LED Matrix via Web

What you need

38-pin ESP32 ESP-WROOM-32 Dev Module - Narrow

38-pin ESP32 ESP-WROOM-32 Dev Module - Wide

30-pin ESP32 ESP-WROOM-32 Dev Module - Wide

ESP32 Uno-form board

ESP32 S3 Uno-form board

USB Cable Type-A to Type-C (for USB-A PC)

USB Cable Type-C to Type-C (for USB-C PC)

FC-16 LED Matrix 32x8

Breadboard

Jumper Wires

DC Power Jack

Screw Terminal Expansion Board for ESP32

Breakout Expansion Board for ESP32

Power Splitter for ESP32

DIYables ESP32 Starter Kit (ESP32 included)

DIYables ESP32 S3 Starter Kit (ESP32 S3 included)

DIYables Sensor Kit (18…