Rancilio Rocky is a nice coffee grinder that I use mainly for grinding my Espresso beans. The grinder is “manual” and it grinds coffee as long as I keep the grinding-button pressed.
More expencise and professional coffee grinders have timers making dosing more accurate as each espresso cup get the same amount of coffee.
To solve this I replaced my grinders hardwired on/off switches with Imp and few Solid State Relays and now my coffee grinder is software controlled by Imp.
I can set the dose (=grinding time) from my mobile and the grinder has the same appearance as the normal grinder.
Now it is grinding equal doses for each cup and ofcourse its also storing the grinding times (=doses) to Initialstate.com if I ever want to analyse my coffee consumption
Attached few pics. First one is the web UI and second from the grinder after modifications. (You can’t see any visible changes.)