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: Button Function Previous / Volume + Previous track and volume increase Next / Volume − Next track and volume decrease Loop Control the playback loop function 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. Pin Description RX Serial data input TX Serial data output GND Ground 5V / VCC 5V power connection 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 Specification Details Product Type DFPlayer Mini MP3 Player Tester Module Audio Module DFPlayer Mini Power Input 5V DC via USB-C Audio Storage microSD Card Onboard Buttons 3 Button Functions Previous / Volume +, Next / Volume −, Loop Speaker 8Ω Speaker Included Microcontroller Interface 4-Pin Serial Header Header Connections RX, TX, GND, 5V (VCC) PCB Dimensions 66.04 × 45.72 mm Arduino Compatible Yes Standalone Operation Yes Enclosure Optional Programming Required No, for basic standalone playback 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!