Build yourself a low-cost easy to assemble robotic bartender using an Arduino Uno. This easy Arduino based project can be 3D printed and is a cool Arduino project for beginners.
Arduino Uno: https://www.amazon.co.uk/dp/B008GRTSV6
Contact Switch: https://www.amazon.co.uk/dp/B00E0JOTV8
Linear Bearings: https://www.amazon.co.uk/dp/B00IJ67BJA
Stepper Motor: https://www.amazon.co.uk/dp/B011NRMXYO
Timing Belt and Pulley: https://www.amazon.co.uk/dp/B0146AF4CI
Download 3D printable parts: