The objective of this tutorial is to learn how to use the DHT22 sensor with Arduino uno. The room temperature and humidity will be printed to serial monitor and also will be displayed to the LCD 4×20 in Proteus ISIS. [caption id="attachment_28379" align="aligncenter" width="300"] DHT22 sensor[/caption] DHT22 is simple basic, cheap digital temperature and humidity sensor. It uses a capacitive humidity sensor ...