Quantity   Component name
1 × some sheets of plywood 5mm laser cut 7 segment stencil
1 × Wattuino ( or arduino mini ) http://www.watterott.com/de/Wattuino-pro-mini-5V-16MHz
1 × RTC module http://www.watterott.com/de/Ultra-Low-Power-Real-Time-Clock-Modul-RTC for keeping the time
1 × Temperature sensor http://www.watterott.com/de/HDC1008-Breakout optional for temperature display
1 × 5V Power supply http://www.watterott.com/de/MEANWELL-Schaltnetzteile-RS-50-5
28 × pieces of WS2812 stipes with 4 LED's each
4 × some pieces of sandwitch paper as diffusor