Arduino Code For Temperature And Humidity Sensor Dht22

Learn how to use temperature and humidity sensor with arduino how to connect dht11 or dht22 temperature and humidity sensor to arduino how to program arduino step by step.

Arduino code for temperature and humidity sensor dht22.

Before i go to next step i think i need to tell you some thing about dht22. Guide for dht11 dht22 humidity and temperature sensor with arduino. The dht11 temperature and humidity sensor senses measures and regularly reports the relative humidity in the air. We ll explain how it works show some of its features and share an arduino project example that you can modify to use in your own projects.

In this tutorial you will learn how to use this sensor with arduino uno. It s humidity range is 0 100 and temperature range is 40 125 c that s why i prefer dht22 as compared to dht11. There are various reasons why we went for the dht22 sensor in this tutorial for starters it is both small and highly affordable. The detail instruction code wiring diagram video tutorial line by line code explanation are provided to help you quickly get started with arduino.

Example code for dht11 and dht22 am2302 temperature and humidity sensor with i2c lcd and arduino. The dht 22 also named as am2302 is a digital output relative humidity and temperature sensor. The detail instruction code wiring diagram video tutorial line by line code explanation are provided to help you quickly get started with arduino. It measures both moisture and air temperature.

In the following example i will be using an i2c character lcd like this one from amazon. You can read more about using an i2c lcd with arduino. Arduino dht22 humidity sensor code. The dht22 sensor also known as the am2302 reference and his little brother the dht11 are temperature and humidity sensors.

I am using dht22 temperature and humidity sensor with arduino uno r3 and getting it s data from arduino serial monitor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin. The following table compares some of the most important specifications of the dht11 and dht22 temperature and humidity sensors. Here we also display those readings on an lcd display.

The dht11 and dht22 are very similar but differ in their specifications. In these tutorials we will measure temperature and humidity by using dht11 with arduino. By combining a temperature and humidity sensor with a small lcd you can create a cheap weather station. The dht22 am2302 sensor is able to measure temperatures from 40 to 125 c with an accuracy of 0 5 c and relative humidity levels from 0 to 100 with an accuracy of 2 5 at extremes to 10 and 90.

The dht22 has a long transmission distance with the cable length being able to be 20m.