#include <Servo.h>
const int PIR_Sensor=8;
Servo doorservo;
int ldr=A0;
int led=12;
int tmp=A1;
int motor=11;
int d;
int const trigPin=7;
int const echoPin=6;
int const buzzPin=5;



void setup()
{
  pinMode(ldr,INPUT);
  pinMode(led,OUTPUT);
  
  pinMode(tmp,INPUT);
  pinMode(motor,OUTPUT);
  doorservo.attach(10);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(buzzPin, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(9, INPUT);
  
}

void loop()
{
  int ldrs=analogRead(ldr);
  if(ldrs<=300)
  {
    digitalWrite(led,HIGH);
    digitalWrite(2,HIGH);
    digitalWrite(3,HIGH);
    digitalWrite(4,HIGH);
  }
  else
  {
    digitalWrite(led,LOW);
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(4,LOW);
  }
  int reading=analogRead(tmp);
  float voltage=reading * 5.0;
  voltage/=1024.0;
  float temperatureC=(voltage - 0.5)*100;
  if(temperatureC>=30)
  {
    digitalWrite(motor,HIGH);
  }
  else
  {
    digitalWrite(motor,LOW);
  }
  d=digitalRead(9);
  if(d==1){
    doorservo.write(100);
  }
  else{
    doorservo.write(0);
  }
  int duration,distance;
  
  digitalWrite(trigPin,HIGH);
  delay(1);
  digitalWrite(trigPin,LOW);
  
  duration = pulseIn(echoPin,HIGH);
  
  distance=(duration/2)/29.1;
  
  if(distance<=50&&distance>=0){
    
    digitalWrite(buzzPin,HIGH);
  }else{
    
    digitalWrite(buzzPin,LOW);
  }
  delay(60);
  if(digitalRead(PIR_Sensor)==HIGH)
  {digitalWrite(buzzPin,HIGH);}
  
  else {digitalWrite(buzzPin,LOW);}
}