Synchro Labs created this project to demonstrate the use of the Synchro mobile app platform with custom hardware:

Drinkro Cocktail Robot

based on a Raspberry Pi 3 Model B and a custom-designed hardware board used to control four DC liquid peristaltic pump motors using two L293D dual H-bridge ICs

Hardware design files are available on GitHub:

SynchroLabs/DrinkroHardware

 

Video of Drinkro in action: