If you come out with a world-beating product, like WorldSemi did with the WS2812B addressable RGB LED “pixel”, you can be pretty sure that you’re going to be cloned in fairly short order.

This is a look at the current state of serially addressable RGB LEDs, and what the future might have in store. The WS2812 and WS2812B LED has four pins: power, ground, data in, and data out.

Vcc Labs has created a Raspberry Pi RP2040-powered RGB LED matrix that's super small and powered via USB Type-C.