Adafruit Audio FX Mini Sound Board - WAV/OGG Trigger - 16MB Flash

The Adafruit MINI Sound Board is the perfect solution for adding audio effects to your project without the need for an Arduino or other microcontroller. Ideal for small, portable projects like props, costumes, or toys, this board is incredibly simple to use and doesn’t require any programming. It’s compact, efficient, and capable of delivering high-quality sound for various applications.

Key Features:

• Standalone Operation: No Arduino or microcontroller required; just a 3-5.5VDC battery to power the board.
• Compact Size: Measures only 1.5" x 0.9", making it ideal for small projects.
• Built-in Storage: Comes with 16MB of storage for audio files, capable of holding a few minutes of compressed stereo or about 30 seconds of uncompressed stereo audio.
• Mass Storage USB: Drag and drop audio files via a micro USB cable just like a USB key.
• Audio Formats: Supports both compressed Ogg Vorbis files for longer playback or uncompressed WAV files for high-quality sound.
• High-Quality Sound: Supports 44.1kHz 16-bit stereo sound, and can handle any bit/sample rate.
• Trigger Inputs: Includes 8 triggers for connecting buttons or switches to play audio files.
• Stereo Line Out: Outputs stereo audio (left and right) for use with headphones, powered speakers, or amplifiers.
• Five Trigger Effects: Renaming audio files creates different trigger effects such as basic trigger, hold looping trigger, latching loop trigger, play next trigger, and play random trigger.
• UART Control: Can be controlled over UART (9600 baud) by a microcontroller, with an available Arduino library for basic playback and volume control.

Trigger Effects:

1. Basic Trigger: Play audio when the trigger pin is momentarily connected to ground (filename format: Tnn.WAV or Tnn.OGG).
2. Hold Looping Trigger: Play audio when the trigger pin is held low and loop until released (filename format: TnnHOLDL.WAV or TnnHOLDL.OGG).
3. Latching Loop Trigger: Play audio when the button is pressed and loop until pressed again (filename format: TnnLATCH.WAV or TnnLATCH.OGG).
4. Play Next Trigger: Play up to 10 files sequentially with each button press (filename format: TnnNEXT0.WAV to TnnNEXT9.OGG).
5. Play Random Trigger: Play up to 10 files in random order with each button press (filename format: TnnRAND0.WAV to TnnRAND9.OGG).

Limitations:

• No Polyphony: Can’t play multiple sounds simultaneously.
• No MP3 Support: Uses OGG format instead of MP3 to avoid licensing fees.
• Fixed Triggers: Only the five pre-configured trigger effects are available; no additional custom triggers.

Powering Options:

• Can be powered by a 3xAAA battery pack or a LiPoly battery. For an all-in-one rechargeable setup, you can use a LiPoly backpack.

Technical Details:

• Board Dimensions: 38mm x 23mm x 4mm (1.5" x 0.9" x 0.2")
• Board Weight: 3.6g

This mini sound board is ideal for adding simple sound effects to your projects with minimal complexity. Whether you’re building a prop, costume, or small electronic device, it’s an easy-to-use, low-cost solution for all your audio needs. Check out the detailed tutorial for more information on powering options, file formats, and trigger effects.