DFplayer mini MP3 player module

DFPlayer is a miniature MP3 module with a built-in power amplifier and the ability to connect a speaker up to 3W. The player can be used as a standalone module or in combination with an Arduino compatible controller. DFPlayer supports common MP3, WAV and WMA audio formats. Supports TF cards with FAT16, FAT32 file system.

All that is needed is to write a set of phrases to a microSD card, insert the card into the module and, at the right time, call the “play” function with the number of the desired song. At any time, it is possible to pause playback and then resume from the same place.

The module supports up to 25500 fragments of phrases, signals or melodies. All audio files can be divided into groups of 255 songs. You can choose from 30 volume levels and 6 equalizer modes.

If you need to use the module as a regular player, then you do not need to allocate additional digital inputs for control buttons. The module has two inputs to which you can connect up to 20 buttons.

Pin Description
VCC
Meals "+"
GND Power "-"
RX UART receive
TX
UART transmission
SPK1
Loudspeaker "+"
SPK2 Loudspeaker "−"
BUSY Status indicator ("0" - simple, "1" - playing)
DAC_R
Headphone or amplifier output (R channel)
DAC_L
Headphone or amplifier output (channel "L")
IO1
Control input: short press - "back", long - reduce the volume
IO2
Control input: short press - "forward", long press - increase the volume
ADKEY1
Resistive keyboard port, input 1
ADKEY2
Resistive keyboard port, input 2
USB+ USB port, "+" port
USB- USB port, port "-"

Module Specifications:

Supply voltage: 3.3-5V
Number of channels: 1 (mono, 3W) + 2 (stereo, no amplifier)
Supported sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz
DAC bit depth: 24 bits
Signal-to-noise ratio: up to 85 dB
Supported file systems: FAT16, FAT32
Maximum SD card capacity: 32 GB
Number of song directories: up to 100
Number of songs in the catalog: up to 255
Audio file formats: MP3, WAV, WMA
Number of volume levels: 30
Equalizer modes: 6 (Normal/Pop/Rock/Jazz/Classic/Base).