The DHT11 sensor comes with a blue or white colour casing. Also learn DHT11 interfacing with Arduino. So if you are using the sensor alone make sure you add these two components. In this tutorial we are using the module form of the sensor, the only difference between both is that in module form the sensor has a filtering capacitor and a pull up resistor attached to the output pin of the sensor. The DHT11 sensor is available either in module form or in sensor form. The DHT11 sensor can measure relative humidity and temperature with the following specifications Temperature Range: 0-50☌ Temperature Accuracy: ☒ ☌ Humidity Range: 20-90% RH Humidity Accuracy: ±5 % We already used it to build IoT Raspberry Pi Weather Station. In this tutorial we are going to learn how to interface the popular DHT11 sensor with Raspberry Pi and display the value of temperature and humidity on a 16x2 LCD screen. It also works with one pin communication and hence is very easy to interface with Microcontrollers or Microprocessors. There are tons of sensors to choose from for measuring temperature and humidity, but the most used one is the DHT11 due to its decent measuring range and accuracy. Temperature and Humidity are the most common parameters that are being monitored in any environment.
