![]() ![]() The first component is a pair of electrodes the electrical resistance between these two electrodes is decided by a moisture-holding substrate. Inside this casing, we have two important components that help us to sense the relative humidity and temperature. The DHT11 sensor comes with a blue or white color casing. ![]() ![]() So if you are using the module you need not add them externally. In this tutorial we are using the sensor, the only difference between the 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. If you are completely new with using PIC microcontrollers you can make use of our PIC tutorial series to learn how to program and use PIC microcontroller, that being said, let's get started. We will use this microcontroller to read the values of Temperature and Humidity using DHT11 and display it on an LCD display. In this article, we will learn how to interface this DHT11 with PIC16F87A which is an 8-bit PIC Microcontroller. The most popularly used Temperature sensor next to LM35 is the DHT11, we have previously built many DHT11 Projects by interfacing it with Arduino, with Raspberry Pi and many other development boards. Temperature and Humidity measurement is often useful in many applications like Home Automation, Environment Monitoring, Weather station, etc.
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