10×5 RGB LED Matrix with only 5 IO pins

by Ole_L @ instructables.com: If you wanna build a fancy led matrix display with only a few pixels, this is exactly what YOU need! You need: -An Arduino -WS2812(B) LED strip -A piece wood -7 jumper wires -7 female pin headers -some capacitors -some wires 10×5 RGB LED Matrix with only...