Lego Pepsi Liquid Stream Machine

Using Lego Pneumatics I managed to create a fully functional Lego Pepsi Liquid Dispenser. The machine works by air pressure, made by two Lego Mindstorms NXT servo motors! It only works when the customer puts in two 25c into the coins slot. The machine rejects dimes pennies and nickels.

How the Lego Soda Pump works: (Lego Pneumatics)
Air is pumped into the sealed bottle, and pressure builds up inside. There is a tube going into the water, and since pressure build up, the water gets sucked into the tube and out to the glass, since the bottle wants to maintain a normal pressure equivalent to its surroundings.

A little outtake: https://www.youtube.com/watch?v=2XOSZemaquw
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Music used in this video:

Lifetime by Dave Erpson
Support Dave Erpson: https://soundcloud.com/daveerpson

Away by Kasbo
Support Kasbo: http://soundcloud.com/kasbomusic
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Disclaimer: I'm NOT affiliated with or sponsored by PepsiCo or The LEGO Group.

Видео Lego Pepsi Liquid Stream Machine канала ElectryDragonite