Wires soldered onto coils inside the machine determine what you end up drinking. The wired coils magnetically turn the rotors within three spinning wheels, and a computer detects the resulting combination. The team programmed the machine to stop only on mixes you'd find in a bartender's manual; just for fun, it also pays out tokens, but it yields a drink or a re-spin for a drink every time. The computer receives the result and sends ingredients and proportions for the winning drink to a microcontroller, which directs the bar unit, where pressurized containers store alcohol and mixers. The microcontroller uses solenoid valves to flow the ingredients in timed increments through a group of nozzles. An LED screen displays what's just been served, along with witty lines inspired by Fear and Loathing. Our favorite: "As your attorney, I advise you to spin!"
Time: 320 hours