Make your own crude Cocktail Machine

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In this project I will show you how I combined an Arduino Nano, an LCD, a rotary encoder, three peristaltic pumps with motor drivers, a load cell and a couple pieces of wood to create a crude, but functional Cocktail Machine. Along the way I will demonstrate how peristaltic pumps work and in which way they can work with the other components in order to pump a precise amount of liquid.

Videos about components of the Cocktail Machine:
Load Cell:    • Electronic Basics #33: Strain Gauge/Load C...  
Rotary Encoder/LCD:    • Make your own Motorized Camera Slider (Par...   or    • Make your own FM Radio - Part 2  

Parts list: (incomplete, see Instructables for more, affiliate links):
Aliexpress:
1x Arduino Nano: https://s.click.aliexpress.com/e/_dUL...
1x I2C LCD: https://s.click.aliexpress.com/e/_dXR...
1x Rotary Encoder: https://s.click.aliexpress.com/e/_d7I...
1x Load Cell (1kg) + HX711 ADC IC: https://s.click.aliexpress.com/e/_dZS...
2x L298N Breakout Board: https://s.click.aliexpress.com/e/_d6B...
3x Peristaltic Pump: https://s.click.aliexpress.com/e/_dUz...
1x DC Jack: https://s.click.aliexpress.com/e/_d6c...
1x 15V 5A Power Supply: https://s.click.aliexpress.com/e/_dSg...
Ebay:
1x Arduino Nano: http://rover.ebay.com/rover/1/711-532...
1x I2C LCD: http://rover.ebay.com/rover/1/711-532...
1x Rotary Encoder: http://rover.ebay.com/rover/1/711-532...
1x Load Cell (1kg) + HX711 ADC IC: http://rover.ebay.com/rover/1/711-532...
2x L298N Breakout Board: http://rover.ebay.com/rover/1/711-532...
3x Peristaltic Pump: http://rover.ebay.com/rover/1/711-532...
1x DC Jack: http://rover.ebay.com/rover/1/711-532...
1x 15V 5A Power Supply: http://rover.ebay.com/rover/1/711-532...

Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com)