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Thread: Humidity sensors
www.piclist.com/techref/io/sensors.htm?key=sensor
face picon face BY : Jinx email (remove spam text)



Any chance a thin slice of conductive foam could be used somehow ?

Joe

> Hi, all - need a cheap, cheap, cheap "fog detector" sensor, to tell when
> a piece of glass is getting fogged up.  I've thought of using a
> LED/photodiode pair, which has possibly problems;  Could use an
> enclosed/open thermistor pair, I suppose.  Anyone have ideas?
>
> What I need is a signal "Glass is fogged, or getting slightly fogged" /
> "Glass isn't fogged", it'd be nice if this is $1 or so in price, I want
> to turn a fan on & prevent fogging of the glass, if I can.

<00c101bf1f49$68ed0260$4d3761cb@joec> 7bit

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