Here’s the latest espressotronic creation in the long human tradition of modifying machines to produce the perfect cup of coffee.
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.
The machine works great! I get better stability and control than I was expecting, and it came together pretty quickly with no major problems. Additionally, I still need to finish fine-tuning the PID parameters to maximize stability.
The creator, Nash Lincoln, got a few of his ideas from a similar project which used a PIC and an NES controller to manage a Rancilio Sylvia machine. Between the two of these projects, you should have enough inspiration and technical knowhow to start hacking your way toward your own espresso nirvana.