From Elvis Wolcott on hackster.io:

This sleek machine can mix juice cocktails or real ones (age permitting) on command and looks great on your counter.

Volumetric vs Ratio Mixing

Ratio Mixing

Use: For juice mixes

Liquids are simultaneously pumped at different rates. For example, when asked to make “Tropical”, orange juice would be pumped at full speed while pineapple and mango are pumped at 10% speed creating a 10:1:1 mixture of juices. This allows you to fill you glass as long as the pour button is depressed and is ideal for juice drinks.

Volumetric Mixing

Use: For alcoholic beverages

Liquids are combined in specific quantities. This only works for drinks of predetermined size, but is more practical for alcohol as it can be quite expensive to waste and (to a limited extent) unhealthy to over consume.

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