Product description
MP3 Player Mini is a compact module with built-in audio decoding and amplifier, designed for projects that require simple playback of audio files without complex software. The module can be used standalone with buttons (push buttons connected via resistors with different resistance values) and a speaker, or controlled via UART from, for example, Arduino, ESP32, or other microcontroller systems. The integrated hardware decoding supports common audio formats and allows audio to be played directly from a microSD card.
Thanks to the built-in 3 W amplifier, a speaker can be connected directly, simplifying design in applications such as voice prompts, alarm systems, interactive installations, and prototypes. The module offers multiple control methods, including serial communication, IO control, and button control via AD inputs, as well as adjustable volume and equalizer modes.
Audio files are stored on a microSD card up to 32 GB with FAT16 or FAT32, organized in folders for easy playback.
Example applications:
- Voice prompts for menu navigation
- Voice prompts for safety checks
- Voice prompts for event verification
- Alarm / notification for equipment faults
- Voice prompts for fire alarms, elevators, automatic doors, etc
Specifications:
- Supply voltage: 3.2 – 5.0 VDC
- Output power: Up to 3 W (mono)
- Interface: UART (serial), IO control, buttons
- Supported audio formats: MP3, WAV, WMA
- Storage: MicroSD up to 32 GB, FAT32
- DAC resolution: 24 bit
- Sampling rates: 8 – 48 kHz
- Volume control: 30 steps
- Dimensions: 20 × 20 × 5.2 mm
