Description
Description
DHT22 output calibrated digital signal. It utilizes exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability.Its sensing elements is connected with 8-bit single-chip computer.Getting started DHT22/AM2302 Digital Temperature and Humidity Sensor
In this tutorial you will learn how to use this sensor with Arduino uno. The room temperature & humidity will be printed to serial monitor. So, let’s get started!The DHT22 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Connections are simple, the first pin on the left to 3-5V power, the second pin to your data input pin and the right most pin to ground.
Technical details:
|
Step1: Hardware required
For this tutorial you will need:Step2: Connecting the hardware
The connections are pretty easy, see the image above with breadboard circuit schematic.