[*SparkFun WT2003S MP3 Decoder (SPX-14810)*](https ...

TMRpcm.h (You need to install this library via the Library Manager in the Arduino IDE. The code initializes the SD card and sets up the audio output. The 'loop ...

The build uses an Arduino, an MP3 chip, a SD card, LCD screen, amplifier, and two speakers. Everything is then packed into a small repurposed box with buttons and a volume knob. The end result is a ...