If you want to get started with motion sensors and the like, ESPHome makes it incredibly easy to build your own sensors.

What’s the cheapest quadcopter you can build? As [Circuit Digest] demonstrates with their variant of the ESP-Drone project by Espressif, you only need a minimum of parts: an ESP32 MCU, an ine… ...

Designed by Namnam in Vietnam, the ESP32 Modbus gateway is built to communicate with PLCs and industrial sensors over Modbus ...

The ESP32-based LILYGO T-Wrist comes with qpaperOS, an open-source firmware for the T-wrist. With this integration, you can expect minimal updates (once per minute), ensuring long-term battery life.