Compact and efficient audio playback module designed for Arduino, PIC microcontroller, and embedded systems. This Mini SD Card MP3 Sound Module supports SD card storage and allows easy playback of voice and sound files for automation, alerts, voice prompts, and DIY electronics projects. With low power consumption and multiple control modes, it is ideal for smart devices and interactive systems. Available from BDTronics Bangladesh for reliable performance in electronics applications.

Features:

• Supports FAT file system for easy SD card integration

• Compatible with AD4 and WAV (ADPCM) audio formats

• Multiple control modes: key control, serial control, and loop playback

• Supports microcontroller interface (Arduino, PIC, AVR)

• Built-in 16-bit DAC and PWM audio output

• Automatic voice file recognition from SD card

• Low power consumption design for embedded systems

• Supports up to 512 voice files playback

• Easy audio update via SD card without reprogramming

• Flexible control using two-wire serial and UART communication

• Compact size suitable for space-constrained projects

• Trusted electronics module from BDTronics Bangladesh

Specifications:

• Module Type: MP3 / Voice Sound Module

• Core Chip: WTV020SD-16P / WTV020SD-20SS

• Storage Support: SD Card up to 1GB

• File System: FAT

• Audio Format: 4-bit ADPCM WAV, AD4

• Audio Output: 16-bit DAC, PWM

• Operating Voltage: DC 2.6V – 3.6V

• Quiescent Current: 16µA (without SD card)

• Max Voice Files: Up to 512

• Control Modes: Key control, UART serial, two-wire serial, loop playback

Applications:

• Arduino and PIC audio projects

• Voice alert systems and alarms

• Smart home voice notifications

• DIY talking devices and toys

• Industrial audio prompts and warnings

• Embedded system sound playback

• Interactive kiosks and automation systems

How to Use:

• Format SD card to FAT file system

• Load audio files (AD4 or ADPCM WAV) into SD card

• Insert SD card into module

• Connect module to Arduino or PIC microcontroller

• Use serial or key control to trigger audio playback

• Connect speaker or amplifier to audio output pins

Usage Tips:

• Ensure audio files are properly converted to supported format

• Use stable 3.3V power supply for best performance

• Avoid using 5V directly without level shifting

• Keep wiring short to reduce noise interference

• Test SD card compatibility for smooth operation

Package Includes:

• 1 x Mini SD Card MP3 Sound Module WTV020-SD

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