To get more into espresso i finally got a used gaggia classic and upgraded it with a replacement controller running the open source gaggiuino project.
Fully with loadcell scales, pressure sensor, pid temperature control and a hand soldered all in one pcb.
You can also use standard arduino style modules for most components but the pcb makes it much more compact and reliable.
In this case the modifications are fully reversible in case a future owner wants to revert it back to stock.
Works great and automates a lot of steps to be more consistent. Now i just need to practice the manual parts of making espresso ;)
Note: this is not my project, i just documented the build process on my machine.
Maybe it helps someone to get an overview what goes into such a conversion and inspires more users to attempt it.
The community is already pretty big and many also adapted the project for other machines.
*Seems like the post was synchronized only after editing multiple times
Around 100w usually for:
All connected to a UPS so measuring is easy and power usage is constant. I would prefer lower as power cost is very high but there is not really anything significant to save at the moment as the server board has no standby function and i need it most of the time.