>Myself? ALOT of my hobbyist work has revolved around data aquisition,
>starting with outside temperatures and evolving into a whole weather
>station and some house monitoring type stuff (i.e. furnace flue temp,
>lets me visually see how much the furnace was used in a day).

One of the first HA electronic projects I came across was when 
microprocessors were still new playthings.

Some guy in somewhere in USA wrote an article in a major US electronics 
magazine (cannot remember which one) back in very early 70's about using a 
SC/MP to control his flue flap, by measuring the flue exhaust temp. He 
adjusted the flap to maintain constant gas temperature, and when the flap 
was fully open, and the temperature couldn't be maintained, it rang an alarm 
to say the fire needs more wood ...

always seemed a bit of a waste for a dedicated micro, but it did show the 
way costs were going. 

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