The MP3 Micro SD Card Sound WTV020 Module is a versatile audio playback solution that integrates seamlessly with Arduino and other microcontrollers. This module enables direct playback of MP3 audio files encoded in AD4 format from a MicroSD/TF card, making it perfect for projects that require audio output. Whether you’re looking to add sound effects to a robotic project, voice alerts to an alarm system, or background music to a display, this module provides an easy and efficient way to bring high-quality audio to your creations.

Designed with flexibility in mind, this module offers multiple output options. You can directly drive an 8-ohm speaker using the SPK+ and SPK- pins for standalone audio playback or use the DAC output via the AUDIO-L pin to connect to a single-ended amplifier for enhanced sound quality. With dedicated pins for playback controls such as play/pause, track navigation, and volume adjustment, you have complete control over the audio experience. Additionally, it supports a two-wire serial interface, allowing you to select tracks and manage playback with simple commands from your microcontroller.

The WTV020 Module delivers impressive audio performance within a compact and easy-to-use package. With its 16-bit DAC/PWM audio outputs and operating voltage of 2.7-3.5VDC (3.3V recommended), this module is an ideal choice for adding audio playback capabilities to your electronic projects.

Please note: To use this product with a 5v Arduino such as the UNO, please use a level shifter as the signal lines are not 5v compliant.

Specifications:

• Storage: Up to 1GB MicroSD/TF Card
• File Format: AD4 (MP3)
• Sampling Rate:
  • AD4: 6KHz to 36KHz
  • WAV: 6KHz to 16KHz
• Audio Output:
  • 16-bit DAC/PWM
  • Direct 8-ohm speaker via SPK+/-
  • AUDIO-L for amplifier
• Voltage: 2.7V to 3.5V DC (3.3V recommended)
• Quiescent Current: 3µA
• Control Interface: Playback controls (play/pause, track, volume)
• Compatibility: Arduino (use level shifter for 5V)
  

Technical Details

• Datasheet