SPECIFICATIONS

DFPlayer Mini MP3 Player Module - TF Card/USB Dual Support, Perfectly Compatible with Arduino Mega 2560/Pro Micro/ESP32 CAM, First Choice for Audio Projects

Key Features & Benefits:

🎵 High Quality 24-bit Audio Decoding
Feature: 24-bit DAC, 85dB SNR, supports MP3/WAV/WMA formats
Advantage: Clear and pure sound quality, no background noise
Benefit: Professional audio quality, suitable for voice prompts and background music

📁 TF Card + USB Dual Storage Support
Feature: Supports up to 32GB TF cards and USB drives (FAT32 format)
Advantage: Large storage capacity, supports multi-folder management (100 folders × 255 files)
Benefit: Can store multi-language audio, long-duration background music, complex sound libraries

🔌 3.3V-5V Wide Voltage Compatibility
Feature: Operating voltage 3.3V-5V, compatible with most microcontrollers
Advantage: No level shifting needed, directly connects to Arduino/ESP32
Benefit: Simple circuit design, easy system integration

🎛️ Multiple Control Methods
Feature: Supports serial commands, button control, AD key control
Advantage: Flexible adaptation to different application scenarios
Benefit: Can build interactive audio systems, automatic playback systems

🔊 Stereo Audio Output
Feature: Independent left/right channel outputs, 30-level volume adjustment
Advantage: Can directly connect to amplifiers or headphones
Benefit: Strong stereo sound quality, fine volume adjustment

Product Description:
Give voice to your audio projects! The DFPlayer Mini MP3 module is the ultimate plug-and-play audio solution for makers and developers. Whether you're building complex voice notification systems for Arduino Mega 2560, adding voice prompts to ESP32 camera projects, or creating audio amplifier systems, this module provides professional-grade audio experience. Simply load MP3 files, connect a speaker, and achieve high-quality audio playback.

🚨 Important Usage Notes:

File Naming & Format Requirements:

TF card must be formatted as FAT32 file system

MP3 file naming rule: 4-digit number (0001-9999).mp3

Supports folder management: 01-100 folders, 255 files per folder

Recommend using Class10 or higher speed TF card

Arduino Mega 2560 Connection Guide:

Mega 2560 has multiple hardware serial ports, recommend Serial1/Serial2/Serial3

RX connects to DFPlayer TX, TX connects to DFPlayer RX

Default baud rate 9600, can be modified via commands

Mega 2560's 5V power can supply DFPlayer

ESP32 CAM Audio Integration:

ESP32 CAM communicates with DFPlayer via serial port

Can implement "motion detected → play warning sound" function

Recommend using 3.3V power to avoid damaging ESP32 CAM with 5V

Can work with TDA2030 and other amplifier modules to drive high-power speakers

Audio Amplifier Applications:

DFPlayer output needs to connect to audio amplifier to drive speakers

Recommend with TDA2030A, TDA7297 and other amplifier modules

Output power matching: DFPlayer output 100mW, amplifier can boost to 10-30W

Educational Robotics Applications:

Can add voice feedback and sound effects to robots

Works with Arduino Pro Micro for compact voice robots

Suitable for educational robotics kits

Provides complete example code and educational resources

Specifications:

Core Chip: DFPlayer Mini

Supported Formats: MP3, WAV, WMA

Decoding Precision: 24-bit DAC

Signal-to-Noise Ratio: 85dB

Total Harmonic Distortion: <0.1%

Frequency Response: 20Hz-20kHz

Storage Media: TF card (max 32GB), USB drive (max 32GB)

File System: FAT16, FAT32

File Management: Supports 100 folders, 255 files per folder

Volume Control: 30-level digital volume control

Audio Output: Stereo, can directly drive 32Ω headphones

Output Power: 2×3W (4Ω load, 5V supply)

Operating Voltage: 3.3V - 5V DC

Operating Current: Quiescent 20mA, playback 80-150mA

Communication Interface: UART serial (default baud rate 9600)

Control Methods: Serial commands, buttons, AD keys

Supported Commands: Play/Pause, Previous/Next, Volume adjust, Loop mode, etc.

Dimensions: 45 × 30 × 10 mm

Mounting: 4 × M2.5 mounting holes

Operating Temperature: -20°C ~ +70°C

Storage Temperature: -40°C ~ +85°C

Interface Type: 2.54mm pin headers

Indicators: Power LED (red), Status LED (blue)

Package Includes:

1 × DFPlayer Mini MP3 Player Module