Electronic Roulette System
During the 90’s I built a lot of electronic kits from Dick Smith Electronics, one of my favorites was the electronic roulette system.
I’m going to have to go from memory here… When you press the ‘spin’ button it would start the discharge of a capacitor, that discharge would then equate to the length of the spin. The initial speed of the spin was at a certain rate, and if you held the button it would spin at the start speed forever. When you release the button it would start to slow down, until it finally click, click, clicked into its final resting spot.