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Tiny black square circuit board, 20 mm each side, no display, microcontroller interface

DFROBOT DFPlayer Mini MP3 Module 128 MB 24-bit DAC 32 GB TF Support

SKU CH-66EC-VJCKK

A compact MP3 module with 128 MB onboard storage and 24-bit DAC supporting up to 32 GB TF cards for DIY audio projects

  • ColorBlack
  • Memory Capacity128 MB
  • Display Size1 inches
  • Display Typeno display
  • Headphones IncludedMicrocontroller
  • Compact module fits tight builds at 20 mm square
  • Supports 32 GB TF cards plus 64 MB NORFLASH
  • 24-bit DAC delivers 90 dB dynamic range and 85 dB SNR
  • 30 volume levels and 6 EQ presets tailor output
  • Serial, IO and AD key control suit Arduino or ESP32 projects

Compact MP3 Module for DIY Audio Projects

The DFROBOT DFPlayer Mini is a self-contained MP3 module measuring 20mm by 20mm and weighing 20g. It is designed for makers and engineers who need to add voice prompts, music playback or sound effects to Arduino or ESP32 based projects without a full operating system.

Low Power Operation with 24-bit DAC

The module draws minimal current suitable for battery powered devices and produces no audible fan noise because it has no moving parts. A 24 bit DAC delivers a 90dB dynamic range and 85dB signal to noise ratio for clear audio output during normal use.

Serial Control with TF Card Expansion

The board includes 128 MB of onboard storage and accepts microSD cards up to 32 GB plus 64 MB NOR flash for larger libraries. It supports MP3, WAV and WMA decoding on FAT16 or FAT32 file systems and offers 30 volume levels with 6 EQ presets selectable via serial, IO or AD key commands.

Highlights

  • Compact module fits tight builds at 20 mm square
  • Supports 32 GB TF cards plus 64 MB NORFLASH
  • 24-bit DAC delivers 90 dB dynamic range and 85 dB SNR
  • 30 volume levels and 6 EQ presets tailor output
  • Serial, IO and AD key control suit Arduino or ESP32 projects

Specifications

BrandDFROBOT
ModelDFPlayer
ColorBlack
Memory Capacity128 MB
Display Size1 inches
Display Typeno display
Headphones IncludedMicrocontroller

Questions about this item

How do I connect the DFPlayer Mini to an Arduino or ESP32 and what wiring mistake should I avoid?

Wire VCC to 5 V, GND to ground, then connect the module TX to the microcontroller RX and module RX to microcontroller TX through a 1 kΩ resistor; the common error is crossing TX and RX without the resistor.

What storage media will need replacing if they fail or wear out?

The micro TF card up to 32 GB and the onboard 64 MB NOR flash are the only storage that can wear out; the built-in 128 MB is fixed.

What audio-quality limit appears first during continuous playback?

The 24-bit DAC delivers a 90 dB dynamic range and an 85 dB signal-to-noise ratio, so noise floor is the first ceiling you hit.

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