In this lesson we’re going to check out the Sound Sensor Module, aka, KY-038 (perhaps wrongly identified as KY-037). I’ll step through the Elegoo provided tutorial, briefly explain the code, and build ...

This project is an interactive Arduino-based piano that plays musical notes and a song stored on an SD card. It also includes a sound spectrum visualizer using an LED matrix, which reacts to the audio ...

They’re using a cheap sound sensor module and an Arduino to catch instantaneous photographs, with students caught in the act of popping balloons.