I love the Adafruit Audio FX family of boards based on the VS1000 WAV/OGG decoder chip, but let's face it: they're getting a bit long in the tooth.

Inspired by the way the Audio FX made it easy to create interactive sound experiences, I created CircuitPython Audio FX.

Like the VS1000 Audio FX, sounds are triggered by pressing a button or closing a switch; the behavior is controlled by the name of the sound file, so you don't have to write any Python code.

Since the MP3 codec patents have all expired, CircuitPython Audio FX supports MP3 and WAV files, rather than OGG files.

CircuitPython Audio FX also supports polyphony: On the Raspberry Pi Pico 2 with RP2350 microcontroller, you can play 4 simultaneous low-bitrate MP3 files from the internal flash memory!

Parts