3. Modelling a Temperature Based Speed Control of a Fan

For the foremost portion in different climatic conditions, people will be endeavoring to control the speed of the fan in their room by physically adjusting the fan controller. However, doing this physically may be to some degree a monotonous undertaking and not correctly utilizing the manual control to switch the fan controller more regularly can damage the controller and cause the current stun. Subsequently, the above-discussed issues can be overcome by implementing the speed control mechanism of the fan automatically. This project is an independent design of an automatic fan speed control system based on the variation of room temperature by using the Arduino microcontroller and DHT11 temperature sensor. Basically, the system is using embedded technology where the closed-loop feedback control system is efficient and reliable. The Arduino NodeMCU ESP8266 allows dynamic and efficient control. The liquid crystal display (LCD) makes the required result easily being observed by user. The sensed temperature and fan speed level values are simultaneously displayed on the LCD panel. The DHT11 temperature sensor senses the temperature and changes it into an electrical signal, which is afterward sent into the microcontroller. The detected and set values of the temperature are shown on the 16 × 2-line LCD. This project can be used in both the home, industry and helps in saving energy and electricity.