Overview

This project involves creating an automatic cocktail maker. A user selects a drink choice from a predefined menu on a website, and their choice is concocted from a variety of drinks housed within the cocktail maker.

The Raspberry Pi is only used for hosting and serving a website for drink selection and interactions with the MBED. Once the user selects a drink on the website, the Raspberry Pi sends the MBED a specific recipe and the MBED feeds signals to the three dual H-bridge instructing the motor-driven pumps to dispense the specific liquids required for the drink.

Demo Video

Hardware Components

• Raspberry Pi 4
• mbed NXP LPC1768 MODULE
• Dual H Bridge Motor Driver (3)
• Peristaltic Pumps (6)
• Smart Color LCD (uLCD-144-G2 128)

Software Components

• Raspberry Pi
  • Flask Framework
  • PySerial Library
• Mbed
  • Motor Library
  • uLCD Library
  • rtos.h

Schematic

Pin Connections

Peristaltic Motors

Connect all 6 motors in a similar method. AIN1 and AIN2 connect to MBED digital pins, and PWM connects to a PwmOut pin.

LCD Screen

Images

Code

Website Code

https://github.com/nicholasjoaquin/drink-dispense

MBED Drink Dispensing Code