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Let this Arduino robotic bartender mix you a drink

We’ve seen different versions of robotic bartenders over the last few years, but this one by DIY Machines looks quite clean, and because of its battery-powered operation can be taken anywhere.

The device works like a simple CNC machine, using a stepper and pulley setup to transport a glass between one of six upside down bottles. When it’s in the correct position, two more stepper motors push a lifting assembly into the selected bottle’s dispenser valve, emptying the correct amount of liquid into the glass. An Arduino Uno is used for control, with user interface provided via a Bluetooth module and smartphone app. 

More videos and build instructions can be found in the project’s write-up, while Arduino code is available here.

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