An arduino-based MP3 player using the DFPlayer Mini and the OneButton, DFPlayerMini_Fast, FireTimer & EEPROM libraries. Be sure you have those installed before attempting to compile the sketch.

Without the common negative, the current will not flow from the Arduino's DIO pin to the DFPlayer correctly. Make sure your DFPlayer is receiving enough current and voltage.

This paper discusses about an advanced smart audio visualizer with equalizer, by assembling Arduino, DFPlayer mini, Metal Oxide Semiconductor Field Effect Transistor (MOSFET), an arrangement of Light ...