The WS2812, or “Neopixels”, or whatever you want to call them, are the standard when it comes to adding blinky to anything. These chips are individually addressable RGB LEDs, which you’ve seen in many ...

Create with light in this workshop on addressable LEDs. This three-hour course is an introduction to the WS2812 addressable LED. We will build a programmable badge that is wearable and rechargeable.

Often, financial motivation results in people writing great educational material for hackers. Such is absolutely the case with this extensive documentation blog post on addressable LEDs by [DeRun].