Product description
The Adafruit Mini Sound Board a board that allows you to easily add sound effects to a project, whether it's a for cosplay, an installation, or simply a box with buttons that play audio files. No programming is required - everything is controlled by naming the sound files. Getting your files onto the board is easy, simply connect it to a computer (with a micro-USB cable) and it will as a USB stick. The audio files can then be dragged onto the storage.
The audio files can be stereo or mono, in .WAV (raw) or .OGG (compressed) formats, and the bitrate can be set to save space or get the highest quality (16bit 44.1KHz). They can be played in five different ways (once, loop while the button is held down, loop until the button is pressed again, a list of up to ten audio files that play one after the other, or a list of up to ten audio files which play randomly).
Instead of having to program, you control playback by naming the audio files. The sound files are named according to this pattern:
- t##.wav (or .ogg) - the sound file is played once when input ## goes low
- t##HOLDL.wav - the sound file is looped while input ## is low
- t##LATCH.wav - the sound file starts looping when input ## goes low, and loops until input ## goes low again
- t##NEXT0.wav, t##NEXT1.wav ... t##NEXT9.wav - the sound files are played sequentially when input ## goes low. First NEXT0, then NEXT1, etc. and then NEXT0 again when all files have been played. The list can have up to ten files.
- t##RAND0.wav to t##RAND9.wav - as above, but the sound files are played in random order.
It is also possible to control playback and volume over UART with e.g. an Arduino.
Specifications:
- Operating voltage: 3.3-5V, can be powered by a LiPo battery, for example
- Memory: 16Mb, enough for a few minutes of compressed material, or about 30 seconds of uncompressed stereo audio. with mono sound files, the time is doubled.
- Output: 3.5mm stereo jack - compatible with headphones or active speakers
- Dimensions: 22 x 48 x 6 mm
- Weight: 4.6g