MP3 Player Sensor

A complete MP3 player the size of a postage stamp that reads audio files from a microSD card and drives a small speaker directly from its built-in 3 watt amplifier. An Arduino sends simple serial commands to play a track, set volume or skip, so no audio processing burdens the microcontroller. It can even run standalone with a couple of buttons and no Arduino at all. The go-to module for talking projects, doorbells, alarms and audio guides. Built-in 3W amplifier drives a speaker directly; Plays MP3 and WAV files from microSD; Simple serial commands, minimal Arduino code; Can operate standalone with pushbuttons