Explore My Gaggiuino Project Photos: DIY Espresso Machine Mod

I’m excited to share my latest open-source project, Gaggiuino—a fun DIY mod for the Gaggia Classic espresso machine. I’m currently putting together the internal electronics, using Arduino to control temperature, pressure, and shot timing. The goal is to give coffee lovers more control over their brew while keeping the process hands-on. It’s all about blending old-school espresso making with modern tech, and I can’t wait to see where it goes!

Update August 2024: I’ve been running the machine successfully for about six months now and it is fantastic! It has become a very powerful entry-pro espresso machine worth much more $$$ than the original sticker price.

My completed machine with the 3d printed LCD display from Ali Express:


My complete setup with a custom built coffee bar cabinet:

https://gaggiuino.github.io/#/guides-stm32/lego-component-build-guide

Initial build of 3d printed enclosure. Was messy and difficult to get these wires so tightly packed into the case. Trick is to run some between the expansion board and the blackpill.

You do not have to disconnect as much as you think! Really just the brew switches. Leave the boiler wires attached!

After tidying the cables up a bit and realizing I only needed to move the boiler a small bit, not remove it, I proceeded:

Here it is booted!