Here is a cool project that we found on Hackalog.
As you all know there are many useful applications of temperature and relative humidity measurements sensors. They are readily that are available on the market consisting of both temperature and humidity sensors, signal conditioning, Analog to Digital Conversions (ADC), calibration and communication interface built in single module packages.
These versatile sensors have reduced the complexity of the design and decreased the project cost. Many hobbyists will find it easy to interface these types of sensor with a microcontroller for practical applications.
In this project, a DHT11 sensor is used to measure the temperature and relative humidity of the area, and then the value is fed to the PIC16F628A microcontroller which will display it using a 16 x 2 Character LCD. Try this easy project and you will surely enjoy the practical applications of the temperature and humidity sensor.
The DHT 11 Sensor comes in a single row 4-pin package and works with a 3.5 to 5.5 V power supply. The temperature range is from 0-50°C with an accuracy of ±2°C. It’s relative humidity ranges from 20-95% with the accuracy of ±5%.
You can read more about it on Hackalog: Temperature and relative humidity project