Arduino-Temperature-Fan

 

When the temperature is 30 or more then The fan will work.
Here is checked temperature, and if the temperature of 30 or above will operate the
fan to cool the heat in the place or anything to be cool.
This project is very small but it will help you work on larger projects.

 

#include <DHT11.h>
#include <Wire.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

int pin2 = 6;
int pin = A0;
DHT11 dht11(pin);

double Fahrenheit(double celsius) {
return ((double)(9 / 5) * celsius) + 32;
}

double Kelvin(double celsius) {
return celsius + 273.15;
}

void setup() {
lcd.begin(16, 2);
lcd.clear();
lcd.print(“Humidity & temp”);
delay(3000);
lcd.clear();
lcd.print(“Starting…..”);
delay(3000);
pinMode(pin2, OUTPUT);
lcd.clear();
}

void loop() {
int err;
float temp, humi;
if ((err = dht11.read(humi, temp)) == 0)
{
delay(500);
lcd.setCursor(0, 0);
lcd.print(“Temp”);
lcd.setCursor(0, 1);
lcd.print(“Humidity”);
lcd.setCursor(9, 0);
lcd.print(temp);
lcd.print(” C”);
lcd.setCursor(9, 1);
lcd.print(humi);
lcd.print(” %”);
delay(600);
if (temp >= 30){
digitalWrite(pin2, HIGH);
}
else
{
digitalWrite(pin2, LOW);
}
}
else
{
lcd.println();
lcd.print(“Error No :”);
lcd.print(err);
lcd.println();
}
}

 

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