Working on improving my barista skills, although my latte art seems to have ground (sorry) to a halt at 'heart', which I guess is level 1.
Next I'd like to add a Pi into the espresso machine for some remote fun. A couple of the control panel pcb-pop-style? buttons are failing, and I thought it might be fun to try and control via a touch screen. I suspect I'll want some kind of timer on the machine side to ensure a safe/timely cut-off, but I haven't done anything like that since using a 555 a very long time ago. Maybe I'll just drive a relay from a digital Pi i/o pin, but suspect it is switching mains level V.