DHT11 Temperature and Humidity Sensor with an Arduino Uno

Here we’ll introduce how to get started with a DHT11 sensor so you can incorporate it into your projects. It’s super simple to start-up and will get you moving onto adding components in no time.
The DHT11 sensor is an easy way to quickly measure surrounding air temperature and humidity. It’s a great little device to slip into environmental control systems, weather stations, and garden monitoring systems. For this introduction, a DHT11 sensor pre-mounted to a PCB was used which eliminates the need to manually place a 10k Ohm resistor and an additional unused pin.

Hardware

• DHT11 sensor
• Arduino Uno
• Dupont wire

Firmware

• Arduino IDE
• DHT11 Arduino Example Code

First, let’s hook up the sensor to the Arduino Uno. You don’t have to use a breadboard, but we did here.

Connection:

{a picture for connection}

Next, let’s run an example code

Open the serial monitor:

We recommend downloading the DHT11 library for future use of the sensor.