#include "DHT.h"
#define DHTPIN 2  
#define DHTTYPE DHT22
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);  
DHT dht(DHTPIN, DHTTYPE);
int Fan = 7;
int Pum = 6;
int ledPin= 13;
int inputPin= 3;
void setup() 
{
  lcd.init();                    
  lcd.init();
  lcd.backlight();
  pinMode(Fan,OUTPUT);
  pinMode(Pum,OUTPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(inputPin, INPUT);
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));
  dht.begin();
  
  
}
void loop() 
{
  int value= digitalRead(inputPin);
  delay(200);
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  float f = dht.readTemperature(true);
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  float hif = dht.computeHeatIndex(f, h);
  float hic = dht.computeHeatIndex(t, h, false);
  Serial.print(F("Hum: "));
  Serial.print(h);
  Serial.print(F("%  Temp: "));
  Serial.print(t);
  Serial.println(F("°C "));
  if(t<35)
  lcd.setCursor(0,0);
  lcd.print("T:");
  lcd.print(t);
  lcd.print("*C");
  lcd.setCursor(0,1);
  lcd.print("H:");
  lcd.print(h);
  lcd.print("%");
  if(t==30)
  {digitalWrite(Fan,LOW);}
  else
  {
    digitalWrite(Fan,HIGH);
  }
  if(h==80)
  {
    digitalWrite(Pum,LOW);
  }
  else
  {
    digitalWrite(Pum,HIGH);
}
if (value == HIGH)
  {
    digitalWrite(ledPin, HIGH);
    delay(1000) ;
  }

  else
  {
    digitalWrite(ledPin, LOW);

delay(1000) ;
  } 
}