I. Overview

This week we have to build a machine. Lana Sattelmaier had the idea of building a Pina Colada Mixing Machine. Together with Jonas van Hagen we discussed it and decided against, because:

• The Cream of Coconut would need to be warmed to make it more liquid. Otherwise, the pumps would not be able to pump it.
• Ice would have to be crushed
• Everything needs to be shaked

The idea of a mixing machine was good, so we thought about another drink and came to the decision to build a Tequila Sunrise Machine.

The advantage are:

• Tequila Sunrise needs only Grenadine, Orange juice and of course the Tequila
• Special temperatures are not needed
• Only the Grenadine is a little more viscous
• No shaking needed

Because of the actual Covid-19 situation I could only drop by for a short visit to the HRW FabLab. During my visit, we made some tests with solenoid valves and taped water,
but we discarded the first idea of using the valves. The suspension force alone was not sufficient to transport the liquids, so Peristaltic Pumps are needed.

We agreed that I would assist with the programming

Tequila Sunrise Mixing Machine

Here is the HRW FabLab page of the group project

Electronic and Programming

Here is a short electronic and programming documentation.