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#Temperature controlled fan arduino how to#
#Temperature controlled fan arduino code#

To make the project more demonstration cooler a screen can also be added which is used to display the temperature and fan speed respectively. A transistor can be used as a switch to turn ON/OFF the fan. When the temperature is too hot, turn on the cooling fan. THIS IS ALL ABOUT HOW WE CAN CONTROL THE SPEED OF THE FAN USING TEMPERATURE SENSOR. Arduino made some calculations and control the speed of fan using PWM output signal. In this tutorial, we are going to control temperature using a fan and DS18B20 temperature sensor. IC 1 (LM35) is a transducer that converts temperature to an electrical signal.

Finally,when the temperature is more the fan rotates with high speed(rpm) and when the temperature is less the fan rotates with less speed,it can be observed by clicking on temperature sensor and varying the temperature after starting simulation. The entire circuit of ‘Temperature Controlled Fan using Arduino’ utilizes very few components, an MCU (Arduino Uno), a temperature sensor (LM35), an LCD, a motor (Fan), a transistor, and a few other passive components, etc.

Here ,The map function is intended to change one range of values into another range of values and a common use is to read an analogue input.

We use the formula temp = (temp*5.0*100.0/1024.0) to calculate the temperature.And we set the initial speed of the fan as ZERO.

Temperature sensor detect the temperature and generate voltage according to temperature it senses.

First we define the minimum temperature required to start the fan and maximum temperature of the fan. Working of the Circuit Arduino Based Temperature Controlled Fan.

#Temperature controlled fan arduino code#

The power pin of the temperature sensor is connected to the 5 V of the Arduino and Vout pin is connected to A0 of the Arduino and ground pin is connected to ground.įloat temp int tempPin = A0 //Arduino pin used for temperature sensor int tempMin = 25 //temparature to start fan int tempMax = 70 int fan = 6 //the pin where fan is connected int fanSpeed = 0 void setup() CODE EXPLANATION:.

#Temperature controlled fan arduino how to#

The temperature sensor consists of 3 terminals Power,Vout,Ground. In this project, I will show how to build a circuit with Arduino Uno that read the temperature via a sensor and control the speed of a 4-pin PWM fan.LM35 temperature sensor senses the temperature and send the analog signal to Arduino, then.

Connect the Terminal 2 of the DC motor to a digital pin 6 of the Arduino and Terminal 1 to the ground. In this arduino based project, we are going to control DC fan speed according to the room temperature and show these parameter changes on a 16×2 LCD display. Working of the temperature based fan speed controller Circuit.A temperature sensor is an electronic device that measures the temperature of its environment and converts the input data into electronic data to record, monitor, or signal temperature changes.