Time: 7 months
The robot has a fully automated booze-dispensing system. Price fills each of the robot's six bottles with either liquor or a mixer (soda, juice, etc.) and then plugs these ingredients into a software program on his laptop. The program computes a list of possible drinks given those ingredients, Price picks one, and the software sends the pouring instructions to the robot via Bluetooth. A custom circuit board receives the signals and moves actuators that open specific valves just long enough for the robot's air-pressure system to force the right amount of each liquid into a waiting glass.
One of the major difficulties of the project was finding a way to move bottles up from the enclosed beer rack on the robot's second level to the section above, which has an open panel that allows Bar2's patrons to grab their drink. The solution: a motorized caulk gun. When Price hits a button on his remote, the gun's rod extends and pushes the beer up from the lower level. He calls it his beer elevator.
To increase Bar2D2's party appeal, Price equipped it with an off-the-shelf, sound-activated neon lighting display so the robot can flash in rhythm with music. He wanted to add a speaker system but decided that would make it too tall and potentially unstable.
Behind the Wheel
Everything — the motorized ice tray, the beer elevator and turntable, the robot's wheels — is controlled by a remote normally used for R/C airplanes and helicopters. Price had it left over from one of his Battlebots machines called The Little Engine That Killed. "I took it from the fighting robot and used it for the loving robot," he jokes.
See the full build process at jamiepricecreative.com.single page
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.