Description
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.
| The product is compatible with Arduino The manufacturer provides a library along with a connection instruction for Arduino users. |
Technical Specifications:
- 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
TECHNICAL 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 |
Insights
| 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. |
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
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