WTV020M01 Audio Sound Module Micro SD Card Voice Playback for Arduino

WTV020M01 Audio Sound Module - Micro SD Card Voice Playback for Arduino and Embedded Projects

Add voice prompts, sound effects, and audio playback to your Arduino or microcontroller project with the WTV020M01 audio module. This compact DIP-footprint blue PCB board houses the WTV020 audio IC, a push-fit micro SD card slot for storing .ad4 audio files, and a simple SPI or GPIO control interface. Ideal for talking alarm systems, interactive toy sound effects, announcement systems, and any project requiring on-demand audio playback.

Key Features

• WTV020 audio IC - dedicated voice and sound playback processor
• Micro SD card slot - stores audio files in .ad4 format (converted from WAV)
• SPI and GPIO control modes - flexible interface with Arduino, ESP32, and any microcontroller
• DIP-compatible pin layout - breadboard and PCB mount friendly
• Supports up to 512 audio files on micro SD card
• Built-in DAC output - connect directly to a small speaker or amplifier module
• 3.3V and 5V compatible supply - works with both Arduino 5V and 3.3V systems
• Compact blue PCB with through-hole pin headers - easy integration

Specifications

• Model: WTV020M01 V1.00
• Audio IC: WTV020
• Storage: Micro SD card (FAT16/FAT32)
• Audio Format: .ad4 (converted from WAV using WTV020 tools)
• Max Files: Up to 512 audio tracks
• Control Interface: SPI mode or 1-bit GPIO key mode
• Supply Voltage: 3.3V - 5V DC
• Output: Speaker output (built-in DAC, requires small amplifier for loud output)
• Pin Count: 16 DIP pins
• PCB Color: Blue

How to Use

• Convert your WAV audio files to .ad4 format using the free WTV020 audio conversion tool
• Copy .ad4 files to a FAT-formatted micro SD card with filenames 0000.ad4, 0001.ad4, etc.
• Insert the micro SD card into the module slot
• Connect VCC, GND, and control pins to your Arduino or ESP32
• Use SPI mode for full control or GPIO key mode for simple one-button-per-track playback
• Connect speaker output pins to a small speaker or PAM8403 amplifier module

Perfect For

• Arduino and ESP32 Voice Prompt and Announcement Projects
• Interactive Toy and Game Sound Effects
• Talking Alarm and Alert Systems
• Museum and Exhibition Audio Trigger Displays
• Doorbell and Chime Custom Sound Replacement
• Robotics Voice Output and Status Audio Feedback

Order now and add custom audio playback to your Arduino or ESP32 project with the WTV020M01 sound module.