Chapter 4 A Wearable News Alert Light Show

You know how to make a single LED blink. By using several GPIO pins, you could make a few LEDs blink together. But how about a ring of twelve multicolored LEDs, or a string of thirty, all changing colors at once? That makes for a much prettier light display—especially when you can pin it on your jacket or wear it as a belt, which is no problem with a computer as small and power efficient as the Pi Zero W.

This chapter will introduce a couple of kinds of addressable colored LEDs and show how to wire, power, and program them. You’ll be able to monitor your Twitter feed and change the pattern of the ...

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