Using a DFPlayer mini purchased on Amazon - Lacking functionality, could not get it to read file counts in the folder and it would just return -1. Solution: Buy from a reputable store, such as arduino ...

DFPLayer mini: We conneect it to Arduino: VCC to 5V, GND to ground, RX to pin 1<-TX (through high resistance resistor, 10k Ohm), TX to pin 0->RX on Arduino and speaker to SPK_1 and SPK_2. On SIM card ...

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 ...