SeeMusic App - Piano Videos with Particles | visual ...

MIDI reactive Neopixel led strip piano (made with an...

How To Make a DIY Piano RGB LED Visualizer using Ard...

原來夠細就好了，當然 ws2812 燈帶能獨立買，別買那個蠢蛋 NeoPixel 兩個是一樣的東西哩