Fan Controller Using Arduino

Lm35 is a precision integrated circuit whose output voltage is linearly proportional to celsius centigrade temperature.

Ceiling fan with light dubai. The system works by an application running on the pc checking the cpu temperature and checking whether to speed up or slow down the fans. To install in the arduino ide go to the sketch tab drop down to include library and click manage library. It is rated to operate over a 550c to 1500c.

How to control temperature using arduino uno fan and ds18b20 temperature sensor. Arduino uno fan control. This project allows users to control two different fans and a servo.

Circuit diagram of the temperature based fan speed control monitoring with arduino lm35 is shown above. So i got an arduino wrote some code and now i can control my fan. You need a fan with a plus red pin a minus black pin and a speed pin.

The speedometer pin is an output of the fan saying how fast the fan is rotating. How to connect it. Temperature and monitoring using arduino the mcu on arduino drive the motor driver to control fan speed.

Some fans with three pins have plus minus but then a speedometer pin. Since we are using libraries we must make sure that the libraries we are using are installed in our arduino ide. The detail instruction code wiring diagram video tutorial line by line code explanation are provided to help you quickly get started with arduino.

These values are used to control the speed of the fan using pwm and the analogwrite. We will also use arduino commands to print temperature corresponding analog value and digital output to mosfet on serial monitor. Temperature controlled fan or room cooler using arduino in this project you will learn how to make your own fan room cooler ceiling fan or exhaust fan automatic temperature controller using arduino dht11 temperature and humidity sensor and a relay modulethe room cooler or fan is controlled automatically depending on the room temperature.

Arduino is at the heart of the circuit as it controls all functions. The fanlcd re maps the temp to allow the display of fanspeed in a 0 to 100 range so you can say that the speed of the fan is directly dependent of the lm35s temperature. Fan speed control technique a low frequency pulse width modulation pwm signal usually in the range of about 30hz whose duty cycle is varied to adjust the fans speed is used.

Arduino is required to change the analog value received from output pin of lm35 to digital value and sends the corresponding digital output pwm to the base of mosfet. A push button also allows for manual control of the fans. In the library manager search for dht and liquidcrystal then install.

The libraries will help to make the code easier. Figure out the pins of the fan connector. The pc communicates with the arduino via the serial port.