100PCS SK6812 WS2812B RGBW RGBWW Individually Addressable LED Chip Board for DIY Lighting
A part of the review has been auto-translated.
THESE THINGS ARE GREAT!! I love them. Bought one sheet to experiment with and I'm already making little lighting projects all over the house. This a board of 100 individual (not connected) pcs that you snap apart for use. They are not connected to eachother on the board. They connect in series - 3 wires going in, 3 wires going out : 5V, Data, GND. The wiring direction is printed on the back, just follow the data direction and it's super easy. Currently I've only found one Arduino library that works proper with the 4 colors (RGBW) and allows bit-banging and that is FAB_LED.h. Adafruit and FAST_LED can be tweaked to work. It took me a few days to figure out how to code them but once you figure it out (Google is your friend) they're real easy to use. Datasheet and documentation are not hard to find. Already ordered again..
It got to him quickly and I'm happy, a detail, I was hoping that the squares would arrive complete, but one of them has a separate led, and the other one is split in half. It doesn't seem to affect functioning, in fact it seems to be designed to knock them off, but I wanted them all together. Anyway, now I'll have to think about using them separately.