Mini MP3 DFPlayer Module – Compact Audio Playback for Arduino & Microcontrollers The Mini MP3 DFPlayer Module is a powerful, palm-sized audio solution that lets you add high-quality sound playback to any Arduino or microcontroller project. Whether you're building a voice alarm system, an interactive toy, or a smart kiosk, this tiny module delivers crystal-clear MP3, WAV, and WMA audio with minimal setup. Made in Mainland China. Why Makers Love This Module Ultra-Compact Design: Measuring just 20×20×10mm, this module fits into even the tightest enclosures — perfect for wearables, robots, and embedded systems. Broad Microcontroller Compatibility: Works seamlessly with Arduino R3 and any other microcontroller with a serial UART interface. Large Storage Support: Reads MP3 files from TF (microSD) cards up to 32GB and USB drives up to 32GB using FAT16 and FAT32 file systems. Multiple Control Modes: Choose from IO control, serial mode, or AD button control — giving you flexibility to integrate it any way you like. Onboard Hard Decoding: Built-in MP3/WAV/WMA hardware decoder means no extra software libraries or heavy processing needed on your microcontroller. 24-Bit DAC Output: Delivers rich, high-fidelity audio with a 90dB dynamic range and 85dB SNR — surprisingly impressive for such a small board. 30-Level Volume + 6-Level EQ: Fine-tune your audio output directly via serial commands. Audio Interpolation / Broadcast Mode: Pause background music to insert voice prompts, then seamlessly resume playback — ideal for announcements and alerts. Technical Specifications Supported Sample Rates (kHz): 8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48 DAC Output: 24-bit | Dynamic Range: 90dB | SNR: 85dB File System Support: FAT16, FAT32 Max TF Card Capacity: 32GB Max U-Disk Capacity: 32GB NORFLASH Support: 64MB Max Folders: 100+ | Max Tracks per Folder: 255 Volume Levels: 30 | EQ Levels: 6 Audio Formats: MP3, WAV, WMA Module Dimensions: 20 × 20 × 10 mm Condition: New Origin: Made in Mainland China Common Applications Arduino voice prompt and alert systems Car navigation and transportation voice broadcasts Toll booth, bus station, and railway station announcements Smart home automation audio feedback Fire alarm and emergency voice warnings Interactive toys, robots, and educational kits Automated broadcast and timing equipment Vehicle entry/exit verification audio prompts What's in the Box 1 × Mini MP3 DFPlayer Module For official Arduino documentation and compatible project guidance, visit the Arduino official site. For electronics safety standards and consumer product information, refer to the U.S. Consumer Product Safety Commission (CPSC). Looking for more electronics components and maker tools? Check out our 100W Dual-Port Car Charger – Fast Charging and our 140W USB-C Fast Charger with Auto Power-Off Protection. Learn more: ESP32 Frequently Asked Questions Q: Is the Mini MP3 DFPlayer Module compatible with Arduino Uno and Nano? A: Yes! The DFPlayer Mini module is compatible with Arduino Uno, Nano, Mega, R3, and virtually any microcontroller that has a serial (UART) interface. Simply connect it via TX/RX pins and use basic serial commands to control playback. Q: What audio file formats does this MP3 player module support? A: The DFPlayer Mini supports MP3, WAV, and WMA audio formats. Files should be stored on a FAT16 or FAT32 formatted TF (microSD) card or USB drive, organized in numbered folders for easy track management. Q: Can I connect a speaker directly to the DFPlayer Mini module? A: Yes. The module includes a built-in amplifier and can drive a small speaker (typically 3W, 4–8Ω) directly. For louder or higher-quality audio output, you can connect the DAC output to an external amplifier. Q: How large a TF card or USB drive can this module support? A: The DFPlayer Mini supports TF (microSD) cards up to 32GB and USB drives (U-Disks) up to 32GB, formatted in FAT16 or FAT32. It also supports up to 64MB of NORFLASH storage. Q: Do I need to install special libraries to use this module with Arduino? A: There are popular Arduino libraries available (such as the DFRobotDFPlayerMini library) that simplify integration. Basic serial commands can also be sent directly without a library, making this one of the easiest audio modules to get started with. {"@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{"@type": "Question", "name": "Is the Mini MP3 DFPlayer Module compatible with Arduino Uno and Nano?", "acceptedAnswer": {"@type": "Answer", "text": "Yes! 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