Buly,

I read the thread on the Aero-Electric Connection with much interest.  I

also did a bit of web-surfing and found a commercially available circuit

board specifically designed for the UV Tron R2868 Flame Sensor.  It is

made for the robot folks.  The circuit board and the UV Tron sensor sell

for $78.  Not bad for a device that can spot fire (not smoke) and is not

fooled by sunlight or other light sources.  The UV Tron sensor by itself

is $48.  Mount it in a small project box with a hole for the sensor to

"see" out, and hook it to a warning horn or LED.  Not too bad for under

$100.  Of course, it won't put the fire out, only warn that you're on

fire.

See http://www.superdroidrobots.com/shop/item.asp?itemid=127&catid=35

Mark S.