The DFPlayer Mini MP3 Player with built in amplification on a breakout board The module can be used as a stand alone module with attached battery, speaker and push buttons or used in combination with ...

Using a DFPlayer mini purchased on Amazon - Lacking functionality ... Command 0x0F In a folder named MP3 (or perhaps mp3). File names with 4 digit prefixes 0001 to 3000. Command 0x12 In the root ...