DFPlayer Mini MP3 Player Module – Serial Control, MicroSD
DFPlayer Mini MP3 Player Module with MicroSD Support and Serial Control
The DFPlayer Mini is a compact, low-cost MP3 player module that integrates a microSD card reader and a 3W amplifier. It decodes MP3, WAV, and WMA files and can be controlled via simple serial commands from a microcontroller like Arduino. This module is perfect for adding high-quality audio playback to your projects, such as voice alerts, music players, or interactive sound effects.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage | 3.3V - 5V DC |
| Audio Output | 3W into 4Ω speaker, or line-out |
| Supported Formats | MP3, WAV, WMA |
| Storage | microSD up to 32GB (FAT16/FAT32) |
| Control Interface | UART (serial) at 9600 bps default |
What You Can Build With This
- DIY MP3 player with playback controls
- Voice prompt system for security or automation
- Interactive sound effects for props or toys
- Background music player for exhibitions or kiosks
Compatibility
Works with Arduino Uno, Nano, Mega, ESP32, and Raspberry Pi (using UART). Voltage compatible with 5V and 3.3V logic. Pair with small speakers or headphones via line-out.
Wiring Notes
Connect VCC to 5V, GND to GND, TX to microcontroller RX, RX to microcontroller TX. Use a 1K resistor on RX line if using 5V microcontroller to avoid damage. Module includes onboard antenna for minimal noise.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, it uses serial communication; connect DFPlayer's TX to Arduino's RX (pin 0) and RX to TX (pin 1). Use the SoftwareSerial library if needed.
How do I load audio files?
Simply copy MP3/WAV files onto a FAT16/FAT32 formatted microSD card, insert, and they will be accessible by file number or name via serial commands.
Can it drive a speaker directly?
Yes, it has a built-in 3W amplifier; connect a 4Ω or 8Ω speaker to the SPK pins. For louder sound, use an external amplifier via line-out.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items