XDA Developers on MSN

7 cheap ESP32-based devices that do one thing perfectly

The ReSpeaker Lite ($32) is a ESP32-based audio kit with a 2-mic array from Seeed Studio that can transform your old speakers ...
Hackaday

The Simplest Ultrasound Sensor Module, Minus The Module

Just about every “getting started with microcontrollers” kit, Arduino or otherwise, includes an ultrasonic distance sensor ...