Mini MP3 Player Module For Arduino

From the shop's description

Mini MP3 Player Module For Arduino A module that allows you to play music files directly from micro SD card via the built-in slot. It communicates through the UART interface – pins RX and TX, with a microcontroller. DFPlayer works with Mp3, WAV, WMA, supports file systems FAT16 and FAT32. Features: Supports MP3 and WAV file decoding Supports FAT16 and FAT32 file system Supports sampling rates (kHz): 8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48 24-bit DAC output supports 90dB and SNR 85dB Supports stand-alone pushbutton (AD Key) control mode Supports serial control by microcontroller Supports USB connection for direct file upload/download to SD card Supports up to 32GB micro-SD card Supports thousands of files for playback supports random playback Built-in 3-watt amplifier can directly drive a small speaker 30 levels adjustable volume and 6 levels adjustable EQ Busy output available for monitoring play state 3.3V logic compatible 5V module operation Leads: soldered goldpin connectors 2.54 mm pitch PINOUT: PIN DESCRIPTION VCC Voltage in the range from 3.2 to 5.0 V. RX Serial interface UART – receiver. TX Serial interface UART – transmitter. DAC_R Audio output for headphones or amplifier – right. DAC_L Audio output for headphones or amplifier – left. SPK2 Output for speaker with power up to 3 W. GND Mass. SPK1 Output for speaker with power up to 3 W. IO1 Liberating input, short hold, switches track, long silences. GND Mass. IO2 Liberating input, short hold, switches track, long increases the volume. ADKEY1 Liberating input, ADKEY2 Liberating input USB+ Data line of interface USB D+. USB Data line of interface USB D-. BUSY The status output. Low state means that the currently playing track, high on the contrary. Specifications: Operating Voltage 4.5 – 5VDC (recommended) MP3 Audio Formats 8/11.025/12/16/22.05/24/32/44.1/48 (kHz) MP3 Audio Decoding 11172-3 and ISO13813-3 Layer3 audio decoding USB Port USB 2.0 UART Port 3.3V TTL Level Serial Port Module Dimensions 20.5 x 20.5mm Applications: Car navigation voice broadcast; Road transport inspectors, toll stations voice prompts; Railway station, bus safety inspection voice prompts; Electricity, communications, financial business hall voice prompts; Vehicle into and out of the channel verify that the voice prompts; The public security border control channel voice prompts; Multi-channel voice alarm or equipment operating guide voice; The electric tourist car safe driving voice notices; Electromechanical equipment failure alarm; Fire alarm voice prompts; The automatic broadcast equipment, regular broadcast Resources: Downloadable Arduino library Arduino connection instructions