I've been reading a fair bit about PID and fuzzy logic controllers recently and am trying to picture how it all works. In my head, I'm thinking of how to make a single tier brewsystem with temp control of the HLT and MLT, something similar to Sabco's BrewMagic. I've seen some pretty snazzy fully auto brew systems out there, but I'm picturing something much more basic. I have zero experience with automation and don't know where I would begin. Also, I'm having trouble finding any threads on this topic that start at the absolute basics. I think what baffles me the most is this- I understand the concept of a controller, but how does it control the flame? I of course understand how I turn a knob and get more or less flame, but how does a controller do it? Any info or links to relevant threads would be very helpful. Cheers