[avr-chat] Butterfly temp->rs232

[Mark Elkins]

I'm waiting on an AVR Butterfly (and 'T'-Shirt) to arrive.
I want to stick it in my computer room and have it send me the current
temperature via RS232 - as well as show the Temp on the LCD. I'd like to
know the "Light Status" too (are the lights on?). 

Rather than re-invent - any one got something close to this they'd like
to share? 

I'll plug this into a Linux box - and have it send a "gimme the Status"
command (arbitrary single character) then read back a line of input - at
some sane (low) speed. 

This way - I can feed the Temp into mrtg, along with the light output,
which should show a nice "Human Occupancy" (the light) and changes in
temp - maybe help me with catching the idiot who switches off the
Aircon...
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