Humidity and Temperature Sensor - DHT22

 

Description: The DHT-22 is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn't require extra components so you can get right to measuring relative humidity and temperature.
Features:

• 3.3-6V Input
• 1-1.5mA measuring current
• 40-50 uA standby current
• Humidity from 0-100% RH
• -40 - 80 degrees C temperature range
• +-2% RH accuracy
• +-0.5 degrees C

Documents:

• Datasheet

Sample

DHT11 MyDHT11 = new DHT11((Cpu.Pin)FEZ_Pin.Digital.Di6, (Cpu.Pin)FEZ_Pin.Digital.Di7);

 

while (true)

{

    if (MyDHT11.ReadSensor())

    {

        Debug.Print("Temperature = " + MyDHT11.Temperature.ToString() + "°C");

        Debug.Print("Humidity    = " + MyDHT11.Humidity.ToString() + "%");                   

    }

    else Debug.Print("DHT11 Error : " + MyDHT11.LastError);

 

    Thread.Sleep(10000);

}

 

FEZ Library 

 

http://code.tinyclr.com/project/289/dht11---temperature-and-humidity-sensor/