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by Max Maxfield The funny thing about knowing something yourself is that you tend to assume everyone else knows it also. This is especially true on a site like EEJournal that attracts electronic engineers and embedded systems developers from all walks of life. But the funny thing is — when you actually get to sit down and chat with people — you begin to realize how little they typically know outside their own area of expertise. The same is true the other way round of course. In fact, although I don’t like to boast, I think it’s fair to say that people are often ama...

A typical Arduino Uno prototyping scenario. First of all, we see the Arduino Uno in the lower-left-hand corner of the image. A little to the right, we see a stick of eight WS2812B tricolor LEDs (commonly known as “NeoPixels” because that’s what the folks at Adafruit call them). In addition to red, green, and blue sub-LEDs, these little scamps also contain three 8-bit pulse-width modulators (PWMs), thereby allowing each NeoPixel to display 2^8 * 2^8 * 2^8 = 2^24 = 16,777,216 different colors. Also, these little rascals are daisy-chained together, which means we can drive the whole stick...