This robotic arm already works well despite the small failure at the beginning of the video (too much haste).
It carries a cocktail glass, moves quickly without spilling a drop, and always keeps the glass in an upright position.
This application was developed by Eager in Osaka, Japan. They hope
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/a-robot-arm-that-serves-cocktails