- Add audio to your project with this shield
- Play uncompressed 22KHz 16bit (on a 12bit DAC), mono Wave (.wav) files of any size
- Output is mono
- Audio files read off of a SD/MMC card
- Easy to make kit at a low cost
Adding quality audio to an electronic project is surprisingly difficult. Here is a shield for Arduinos that solves this problem. It can play up to 22KHz 12bit uncompressed audio files of any length. It's low cost, available as an easy-to-make kit. It has an onboard DAC, filter and op-amp for high quality output. Audio files are read off of a SD/MMC card. Volume can be controlled with the onboard thumbwheel potentiometer. While it isnt CD quality, it is certainly good enough to play music, have spoken word, or audio effects.
This shield is a kit, and comes with all parts you need to build it. The shield comes with an Arduino library for easy use; simply drag uncompressed wave files onto the SD card and plug it in. Then use the library to play audio when buttons are pressed, or when a sensor goes off, or when serial data is received, etc. Audio is played asynchronously as an interrupt, so the Arduino can perform tasks while the audio is playing. But the Arduino, SD card, tools, speaker and headphones are not included.
File Type: uncompressed 22KHz 16bit mono Wave (.wav) - any size
SD/MMC Format: FAT16/FAT32
Output: Mono (L and R channels)
Output jack: Standard 3.5mm headphone jack
Optional output: Speaker connection switches on when the headphones are unplugged
Included library and examples makes playing audio easy
Please note: that the library is rather bulky, requiring 10K of flash and more than 1/2 K of RAM for buffering audio.
It works fine using any ATmega328-based Arduino (Duemilanove, Uno or compatible).
Not Mega or Leonardo compatible