We have a Gaggia bean-to-cup coffee machine - so this particular article about modding a Gaggia Espresso machine with a Arduino controller really caught my eye:
The goal of this project is to create a computer interface for my Gaggia Espresso machine replacing the factory thermal switches with a PID controller and the “steam” and “pump” toggle switches with a LCD/button menu system.
Motivation
After seeing the various instructions and kits geared toward modding a home espresso machine with a PID, and their costs and features compared to something like the PID PIC MOD, I decided I would start from scratch and build my own PID. Then I could easily extend it to control the rest of the espresso machine, such as adding a timer to monitor or control the shot time and adding temperature presets.
[From Nash Lincoln » Gaggia Espresso PID Arduino Mod]
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