Define computer. Good espresso machines use a PID controller and some have ways to tweak the pressure curve + other features. There are even DIY projects to make your own. I think the part that bothers you is the data collection and internet connection. That is 100% not necessary.
None of the good ones involve a computer
Define computer. Good espresso machines use a PID controller and some have ways to tweak the pressure curve + other features. There are even DIY projects to make your own. I think the part that bothers you is the data collection and internet connection. That is 100% not necessary.