The tool in question is the ESP32 Web Updater and SPIFFS File Manager. It features a web interface courtesy of the ESPAsyncWebServer library.

T he ESP32 is an incredibly versatile microcontroller, and so long as you have the wires and the hardware to connect it to, ...

This requires some additional hardware that will set you back between $10 and $30, but an LED matrix display can be an incredibly fun and rewarding project to build with an ESP32. You can make it pull ...