HUmidity sensor

That depends on what you want in terms of accuracy, response time, etc.

The classic approach to doing this is "chilled mirror".

You can also pick up some capacitance-based sensors though I don't think you will get the same sort of accuracy. And, there's some tricky math involved converting to the various different types of "moisture" measurements (you didn't say

Are there not sensors based on "biabsorptive strips"? (At least, I don't know what else to call them). They are two strips of some fibrous material glued together and wound in a spiral, just like a bimetallic strip only sensitive to humidity rather than temperature.

Google for "Sensirion"

Regards Ulrich Bangert

"Giorgis" schrieb im Newsbeitrag news: snipped-for-privacy@e3g2000cwe.googlegroups.com...

Ulrich Bangert wrote:

Another vote for Sensirion .

The things are small and give direct digital output. It needs some calculations, though.

The interface is nearly I2C but not exactly.

I'm using SHT-11's.

Place an egg cup on your window sill. If the egg cup is wet then it is raining. For additional accuracy draw horizontal lines on the egg cup.

HTH

Mmm.... a humidity sensor with built-in integration...

Meindert

Do I need to include the window sill in my embeded device ?

Thanks guys, Good pointers ... a googling I shall go ...