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Hey Makers,

In this tutorial we are going to Connect Arduino To DHT11 .

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Step 1: ​How Does It Work?

The DHT11 is a basic, ultra 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). Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.

Step 2:

What we Can Do With it?

>Make a Weather Box

>Digital Thermometer

>Fire Alarm

>Know the weather outside and lots more.............

Step 3:

Things Required

>Arduino Uno (The brain)

>DHT11 Temperature and Humidity sensor (http://goo.gl/qHFAU5) (http://goo.gl/qHGwLi)

>Jumper Wire (Male To Female)

Step 4:

Lets Get Started

Connecting Dht11 to arduino

Vcc - 5v Arduino

Gnd -Any GND pin of Arduino

Data-Arduino Digital Pin 3

Step 5:

Datasheet for Dht11


Please download the DHT library from the above link. Then Open Arduino IDE Go to Sketch

--> Include Library --> Add Zip File Close the Arduino IDE and open it again then you will find the library included.

For more info : https://www.arduino.cc/en/Guide/Libraries

Step 6:



Download the Code from the link and open it with Arduino IDE.

Step 7:

Open Serial Moniter

Upload the programme.

Click Serial Moniter.

You can see the current temperature and Humidity Readings there!

Step 8:

Thats all makers! If you have any doubts just comment it with the tag " #MM " Stay Tuned for more Projects!

View My Blog For More Intresting Projects


It's a request from me If my instructable worked for You ,Let the other Makers know by ur comments and Favourites! Do Visit my blog for Sure!

Thank You!

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    7 Discussions


    3 years ago

    So...I have everything hooked up. The code verified and downloaded correctly.

    I cannot read anything over the comport. Its there..which means my code is uploaded correctly. When I open the comport I see nothing. Please advise.

    3 replies

    Reply 3 years ago

    Hey Buddy!
    Make sure that your Connection To DHT11 is correct!
    Do visit my blog for more Interesting Projects
    fb : www.facebook.com/miymakers


    Reply 3 years ago

    Sorry it took me so long to respond. Work has been tough with the Verizon strike. I will try this now and respond via email.

    Thank you very much for your help.


    3 years ago

    I am new to instructables and the Maker revolution. I bought a 37 pc sensor kit and I just want to thank you for the great "how to" guide.


    Reply 3 years ago

    Hey! wold630

    Really Happy to hear From You! Your Comments means a Lot for Me!

    Stay Tuned For More Projects!!!