#include <DHT.h>
#define DHTPIN 3
#define DHTTYPE 22  // OR 11 FOR BLUE COLOUR SENSOR
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>


// initialize the sensor
DHT dht(DHTPIN,DHTTYPE);
LiquidCrystal_I2C lcd1=LiquidCrystal_I2C(0x27,16,2); 
LiquidCrystal_I2C lcd2=LiquidCrystal_I2C(0x25,16,2);
int c=0;

void setup() {
  Serial.begin(9600);
  dht.begin();
  lcd1.init();
  lcd2.init();
  lcd1.backlight();
  lcd2.backlight();
  pinMode(7, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  delay(2000);
  float temp=dht.readTemperature();
  float hum=dht.readHumidity();
  if(isnan(temp)||isnan(hum)){
    Serial.println("Error is DHT!");
  }
  else if(temp > 30){
    digitalWrite(7, HIGH);
  Serial.print("Temperature ");
    Serial.println(temp);
    Serial.print("Humidity ");
    Serial.println(hum);

  }
  else if(temp < 20){
    digitalWrite(7, HIGH);
  Serial.print("Temperature ");
    Serial.println(temp);
    Serial.print("Humidity ");
    Serial.println(hum);

  }
   else if(hum < 40){
    digitalWrite(7, HIGH);
  Serial.print("Temperature ");
    Serial.println(temp);
    Serial.print("Humidity ");
    Serial.println(hum);

  }
   else if(hum > 90){
    digitalWrite(7, HIGH);
  Serial.print("Temperature ");
    Serial.println(temp);
    Serial.print("Humidity ");
    Serial.println(hum);

  }
  else{
    digitalWrite(7, LOW);
    Serial.print("Temperature ");
    Serial.println(temp);
    Serial.print("Humidity ");
    Serial.println(hum);
  }
  
  lcd1.setCursor(1,0);
  lcd1.print("Temperature");
  lcd1.setCursor(1,1);
  lcd1.print(temp);

  lcd2.setCursor(1,0);
  lcd2.print("Humidity");
  lcd2.setCursor(1,1);
  lcd2.print(hum);
}