On Sat, 25 Jun 2011 16:44:14 -0400, you wrote:

>Hi all,
>
>I'm looking for a relatively cheap (~$10 for humidity sensor, ~$5 or less
>for temperature sensor) for my project.
>
>Right now, I'm looking at the following:
>
>Temperature: DS18B20 (
>http://ca.mouser.com/ProductDetail/Maxim-Integrated-Products/DS18B20+/?qs=
=3DsGAEpiMZZMvbyeSUH4qH%2fLbikZ7SIep9
>)
>
>Humidity: HIH-5031-001 (
>http://ca.mouser.com/ProductDetail/Honeywell-Microswitch/HIH-5031-001/?qs=
=3DsGAEpiMZZMseu6oguAZpqee7rmuRi3v3z4pHD5zNNiU%3d
>)
>
>Requirements:
>- Low voltage (3.3V compatible).
>- Easy to interface (digital bus outputs are nice, such as SPI, I2C, 1wire=
,
>etc), I don't want to be measuring capacitance or frequency. I can work wi=
th
>linear voltage measurement.
>- Humidity range: 0-100% RH.
>- Temperature range: nothing special, anything standard will most likely d=
o.
>- Cost: as mentioned above. I don't want to be spending $40 for a chip.
>
>Can anyone recommend better? Have any experience with a particular product=
?

I looked at that recently & came back with  LM75 and HIH-503x as cheapest.=
=20
NB price on HIH-503x varies a lot between distributors so worth shopping ar=
ound

--=20
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