Read more: Major PC Monitor Brands Ranked Worst To Best The board that started Arduino's Nano family, the Nano is a classic platform ideal for basic circuit building and breadboard prototyping.

Quickly, he started thinking to himself, “Hmm…I wonder if I could do this with an Arduino Nano?” We’ve all probably had similar thoughts, but [Peter] really put his theory to the test.

An Arduino Nano is charged with running the show, capturing audio via its analog-to-digital converter. A sensitivity pot enables the input level to be set appropriately. From there, a Fast Fourier ...