Adafruit Audio FX Sound Board

Adafruit Audio FX Sound Board is used to add audio/sound effects to a project. Add audio to projects without an Arduino+Shield or designs that need sound to play whenever a button is pressed. The Audio FX Sound Board is a small, portable, simple, low-cost audio effects trigger that is easy to use with no programming required.

The Adafruit Audio FX Sound Board is offered in two variants:

  • 2217: Includes a built-in Class D stereo amplifier providing 2 x 2.2W of output audio power, capable of driving 4Ω or 8Ω speakers
  • 2133: Features a non-amplified 1/8" jack to connect to headphones, a stereo, or powered speakers

Both versions of the Audio FX Sound Board include header strips. They do not include batteries, speakers, a breadboard, or tactile switches. The Sound Board can be powered from any 3V to 5V DC power source, such as a 3x "AAA" battery pack or a LiPoly battery such as part # 2124.


  • No Arduino or other microcontroller required; completely stand-alone, and just needs a 3V to 5.5V DC battery
  • Small 1.9" x 0.85" PCB
  • Built-in storage, no SD card required, there's 16MB of storage on the board itself
  • Built-in Mass Storage USB - plug any micro USB cable into the Sound Board and Windows computer, drag and drop files right on as if it were a USB key
  • Compressed or Uncompressed audio - go with compressed Ogg Vorbis files for longer audio files, or uncompressed WAV files
  • Stereo line out - breakout the line out levels to connect headphones if desired
  • High-Quality Sound - 44.1KHz 16-bit stereo, the decoding hardware can handle any bit/sample rate and mono or stereo
  • 11 Triggers - connect up to 11 buttons or switches; each one can trigger audio files to play
  • Built-in 2 x 2.2W Class D Amplifier (2217 only)
  • Five different trigger effects - by changing the name of the files, create five different types of triggers to cover a large range of projects without any programming


Board Layout (2217)

Mechanical Drawing - Adafruit Audio FX Sound Board

Board Layout (2133)

Mechanical Drawing - Adafruit Audio FX Sound Board
Publicado: 2018-02-23 | Actualizado: 2022-08-15