Saturday 7 May 2011

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:

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 
 
 
 




No comments: