Play WAV sound effects on an ESP32 via I2S

Adafruit Blog reports on SoundEngine, software for playing WAV sound effects on an ESP32 microcontroller. It mixes multiple clips together in the background without blocking your sketch — each sound has individual volume control, and a master gain sits on top of them all. The MIT-licensed tool is available on GitHub and requires Arduino-ESP32 core three-point-zero or later, plus an I2S digital audio converter like the MAX98357A.

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