This is my personal approach to make a controller for Gaggia Classic coffee machine. I have designed it from scratch integrating standard parts that can be found online. It main goal is to control boiler temperature and pump pressure, but actually i am adding more features as i have the time to implement it.
I'm verrry interested in this project. I've studied in electronics but it's been years and ended up as software developer.
Is it possible to have a small schematic? I'm interested to order the parts and then try to contribute. If I find time, I could make a custom board w/ an esp + triac + connectors (i2c or?) for the sensors etc... All would be on a single board but without the original schematic and component values, it's hard to start.