Xantia Dash Backlight with Bluetooth control

Jut in advance - ff you see that -97°C shown on my trip computer, know that i forgot to put it sensor plug and come that false reading. What is the idea behind: Atmel MCU(arduino nano), HC-05 BT hardware serial and 7 pcs of WS2812B LEDs for each position of the bulbs. Nice thing about them is that you need only ONE pin to control. Unfortunately instrument cluster have green foil so the colors it can produce are all show in that video. In case there isn`t any foil and you have more backlight spot you can play with much more combination ;) Diagram and code can be found at: www.longgo.eu