There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors ... 433 MHz receiver module to an ESP32 or ESP8266 microcontroller ...

The ESP8266 and its heavyweight sibling the ESP32 are fantastic boards to develop with as they allow you to quickly and easily get a project online. Just tack a few sensors and some LEDs on them ...

Bart Dring's 6x CNC Controller is an ESP32-powered, FluidNC-compatible CNC controller board with support for 6 external ...