Indiduino

An automation solution for astronomical observatories

Humidity/Temperature sensors

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The guys from http://tech.groups.yahoo.com/group/sgl_observatory_automation use Sensurion SFT11 conbine sensor to make dew heaters. See Sensirion page

http://www.sensirion.com/en/products/humidity-temperature/humidity-sensor-sht11/

Is available at http://www.adafruit.com/products/246

A good and cheaper alternative is DHT22 chip http://www.adafruit.com/products/385

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