DFPlayer Mini MP3 Player Tester Module with USB-C Power, Speaker & Optional Enclosure

Play MP3 audio directly from a microSD card – no Arduino, programming, or complicated wiring required!

The DFPlayer Mini MP3 Player Tester Module is a compact, convenient, and easy-to-use audio playback board designed for electronics enthusiasts, hobbyists, students, makers, and Arduino developers.

This module provides a simple way to test and operate a DFPlayer Mini MP3 player without building a separate circuit. Featuring three onboard control buttons, a USB-C power input, an included 8Ω speaker, and a 4-pin Arduino interface, it is ideal for both standalone music playback and microcontroller-based audio projects.

Simply insert a microSD card containing your MP3 files, connect a standard USB power bank using a USB-C cable, and start enjoying audio playback.

An optional basic enclosure is also available for a more complete and convenient setup.

Key Features

• Standalone MP3 Player: Play audio directly from a microSD card without requiring an Arduino or other microcontroller.

• Three Onboard Control Buttons: Conveniently control track selection, volume, and playback loop functions.

• USB-C Power Input: Easily power the module using a standard USB power bank, USB charger, or suitable 5V USB supply.

• Included 8Ω Speaker: Comes with a speaker for immediate audio output without requiring a separate amplifier.

• Arduino-Compatible Interface: A 4-pin header provides RX, TX, GND, and 5V (VCC) connections for integration with Arduino and other compatible microcontrollers.

• Compact PCB Design: Measuring just 66.04 × 45.72 mm, the board is suitable for small electronics projects and demonstrations.

• Optional Enclosure: Available with a basic enclosure to protect the PCB and give the project a more finished appearance.

• Ideal for Learning and Prototyping: Excellent for experimenting with DFPlayer Mini audio playback, serial communication, and embedded electronics.

Three-Button Control System

The module features three conveniently positioned buttons:

The dual-function track and volume buttons provide simple control while keeping the module compact.

USB-C Power – Convenient and Portable

Forget complicated wiring or the need for a dedicated power supply!

The module features a USB-C connector, allowing it to be powered directly from a standard 5V USB power source.

Simply connect it to:

• A USB power bank for portable operation

• A USB wall charger

• A computer USB port

• A suitable regulated 5V USB supply

A portable USB power bank makes this module particularly useful for demonstrations, workshops, classrooms, and DIY audio projects.

Note: The USB-C port is intended for powering the module. Audio files are stored on the microSD card.

Arduino and Microcontroller Compatibility

In addition to standalone operation, the board includes a convenient 4-pin interface for connecting to a microcontroller.

Using the serial interface, you can develop projects that control audio playback through an Arduino, ESP32, or other compatible microcontroller.

Potential applications include:

• Talking electronics projects

• Voice announcement systems

• Interactive learning kits

• Sound effects for robotics

• DIY alarm and notification systems

• Arduino-based music players

• Electronic toys

• Audio playback demonstrations

Important: When connecting a 3.3V microcontroller such as an ESP32, ensure appropriate serial logic-level compatibility.

Technical Specifications

What's Included?

Standard Version:

• 1 × DFPlayer Mini MP3 Player Tester Module

• 1 × 8Ω Speaker

Optional Enclosure Version:

• 1 × DFPlayer Mini MP3 Player Tester Module

• 1 × 8Ω Speaker

• 1 × Basic Enclosure

Please Note:

• MicroSD card is NOT included.

• USB-C cable and USB power bank are not included.

• Arduino or other microcontroller is not required for basic standalone operation.

• The enclosure is supplied only when the enclosure option is selected.

Why Choose This Module?

Whether you want a simple standalone MP3 player, a convenient DFPlayer testing board, or an audio module for your next Arduino project, this compact board offers an easy and practical solution.

Its USB-C power input, integrated control buttons, included speaker, and accessible serial interface make it an excellent addition to any electronics workbench.

Just add a microSD card with your MP3 files, connect USB-C power, and start playing!