This is David’s first attempt at designing for production and sale. As anyone knows who’s tried it, making something as a one-off if very different to doing it at scale, and David has explored this in a series of blogs in which he explains the process of going from idea to sales platform. It’s powered by an ATtiny13A and a CR2032 coin cell battery, and the user controls the LEDs via a small button on the side of the badge. And it you want to know more about introversion and why it’s not what you might think it is, try reading Quiet: The Power of Introverts In A World That Can’t Stop Talking, by Susan Cain.
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