For this project, any small passive speaker should be sufficient. We're using one available https://shop.pimoroni.com/products/3-speaker-4-3w?variant=380549926[here], which handles 5W of power at 4Ω. We have also used an illuminated momentary push button, and a laser-cut box to house all the components; but both are entirely optional. This example will work just using the Codec Zero's on-board button, which is pre-wired to GPIO 27. (Alternatively, you can use any momentary push button, such as those available https://shop.pimoroni.com/products/mini-arcade-buttons?variant=40377171274[here].)
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