Door 4

The components...a single green LED. Way better than yesterday when I got the red LED. Better because it is GREEN :) And has the built-in resistor :))

Game: The slot machine

Aim of the game: together with the earlier stuff we now have a slot machine - or if you like - a binary dice. Push the button and the LEDs representing bit will give you: 1=001, 2=010, 3=011, 4=100, 5=101, 6=110.