Normally, when a project calls for addressable LEDs, we just throw a strip ... the LED bars, each of which draws about 100 mA and needs to be very smoothly dimmed. [Leo] looked at the WS2811 ...

[Alan] has been working on driving this WS2811 ... the LED will remain the same color and intensity until you tell it otherwise. You can buy them attached to flexible strips, which can be cut ...