// C++ code
#include<LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#include<DHT.h>
#define sensor 10
#define DHTTYPE DHT22
#define DHTPIN 2
DHT dht(DHTPIN,DHTTYPE);


void setup()
{
  dht.begin();
  Serial.begin(9600);
  pinMode(sensor,INPUT);
  pinMode(2,INPUT);
  lcd.init();
  lcd.backlight();
  pinMode(4,OUTPUT);
  pinMode(5,INPUT);
}

void loop()
{
  long duration;
  long distance;
  digitalWrite(4,LOW);
  delayMicroseconds(2);
  digitalWrite(4,HIGH);
  delayMicroseconds(10);
  digitalWrite(4,LOW);
  duration = pulseIn(5,HIGH);
  distance= duration*0.034/2;
  lcd.setCursor(0,0);
  lcd.print("Distance:");
  lcd.print(distance);
  delay(1000);
  int val,temp,hum;
  lcd.setCursor(0,0);
  val = digitalRead(sensor);
  if(val==HIGH)
  {
  lcd.print("Motion Detected");
  delay(1000);
  lcd.print("Motion Not Detected");
  delay(1000);
  }
  else 
  { 
  lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("Temperature ; ");
  temp=dht.readTemperature();
  lcd.println(temp);
  lcd.print("Humidity ; ");
  hum=dht.readHumidity();
  lcd.println(hum);
  delay(1000);
  }
  if (distance>200)
  {
    digitalWrite(6,HIGH);
    delay(1000);
  }
  else if(temp>200)
  {
   digitalWrite(6,HIGH);
   delay(1000);
  }
  else if(10==HIGH)
  {
   digitalWrite(6,HIGH);
   delay(1000);
  }
}