Description

DFPlayer Mini MP3 Module

The DFPlayer Mini MP3 Module is a compact embedded audio playback solution designed for microcontroller projects requiring standalone sound reproduction. Featuring an integrated MP3 decoder and onboard amplifier, this module supports direct playback from a microSD (TF) card without requiring an external audio processor.

Designed for Arduino, ESP32, STM32, Raspberry Pi, and other embedded platforms, it supports serial communication, button control, and AD key operation, making it suitable for interactive electronics, smart devices, voice prompts, and multimedia applications.

---

Compact Audio Playback Solution

The Mini MP3 Player Module integrates storage, decoding, digital control, and audio amplification into a compact board. Simply insert a formatted TF card containing audio files, connect power and a controller, and begin playback immediately.

Its small footprint makes it ideal for projects where space is limited while still providing reliable sound quality.

---

Key Features

• Built-in MP3 decoder IC
• Supports FAT16 and FAT32 file systems
• Compatible with TF cards up to 32GB
• UART serial communication
• Standalone playback without MCU
• Integrated 3W audio amplifier
• Supports speaker and DAC output
• Adjustable volume (30 levels)
• Supports folder-based audio management
• Low power consumption
• Compact DIP package for easy integration

---

Technical Specifications

---

Applications

This Audio Playback Module is widely used in embedded electronics requiring high-quality voice or music playback.

Typical applications include:

• Voice prompt systems
• Smart home devices
• Talking robots
• Interactive exhibitions
• Security alarms
• Educational electronics
• DIY audio projects
• Industrial equipment
• Medical devices
• Home automation
• Electronic toys
• Access control systems

---

Multiple Control Methods

UART Serial Control

The module communicates through a standard UART interface, allowing simple integration with Arduino, ESP32, STM32, and many other controllers using serial commands.

---

Button Control

For standalone applications, push buttons may be connected directly to trigger playback functions without additional programming.

---

AD Key Mode

Multiple buttons can share a single analog input through resistor networks, reducing wiring complexity while maintaining full playback control.

---

Supported Audio Formats

The decoder supports several popular audio formats including:

• MP3
• WAV
• WMA

Files stored on the TF card are automatically indexed, allowing playback by folder number, file number, or command sequence.

---

Compatible Development Platforms

This Serial MP3 Module works with many popular development boards, including:

• Arduino UNO
• Arduino Nano
• Arduino Mega
• ESP32
• ESP8266
• STM32
• Raspberry Pi (UART)
• PIC
• AVR
• 8051 Microcontrollers

---

Package Includes

• 1 × DFPlayer Mini MP3 Module

---

Learn More

Getting Started Guide

https://wiki.dfrobot.com/DFPlayer_Mini_SKU_DFR0299

---

Demonstration Video

Having trouble with installation? → For a quick walkthrough, [see the video here].

---

Looking for more?

[browse our picks]

---

FAQ

Q1: Can this module operate without an Arduino?

Yes. It supports standalone operation using push buttons or AD key control, allowing audio playback without a microcontroller.

---

Q2: Which audio formats are supported?

The board supports MP3, WAV, and WMA files stored on a FAT16 or FAT32 formatted TF card with capacities up to 32GB.

---

Q3: Is it compatible with ESP32 and Raspberry Pi?

Yes. The module communicates through a standard UART interface and can be connected to ESP32, Raspberry Pi, STM32, Arduino, and many other embedded controllers.