Come on tell us more about whats happening on the hardware side. I'm personally interested since everything I do is software and never really got a chance to play around with raspberry pis and ardunios.

Why do we need a flow meter? Solenoid valve?

Really happy to see hardware getting built. Is there any help / feedback you're looking for?

Also what would the difference be serving beer vs another drink? For example, at HUB21 (belgrade hackerspace) we wanted to have a Rakiya dispenser since it'd be more Serbian. Could your hardware be configured for different types of drinks?

Since Rakiya is a bit stronger, and well we don't wanna promote drinking too much while working I was thinking imagine the cost of a drink starts really high in the morning, then gradually goes down to a normal price by 5:00PM -- since you don't want someone staying at the hacker space too late though, it starts to go back up after 8:00PM

Then that could all be viewed / configured by hackerspace admins on the electron / mobile app with some funny stats showing alcohol consumption vs cost.