Download, unzip and copy the DHT22 folder into your libraries folder eg: for MPIDE: C:\Users\yourname\Documents\mpide\libraries\DHT22 for Arduino IDE: C:\Users\yourname\Documents\Arduino\libraries\DHT22 An example script is included. Been reading a few reports that this sensor is more accurate at the higher voltage (eg 5V) rather than the 3.3V. My observations so far suggest the same. So when using … Continue reading DHT22 (RHT03) Temp Humidity library for chipKIT and Arduino 1.x