#include "DHT.h"
#define DHTPIN 6     
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

int pirSensor = 7;
const int ldr = A0;
int relay = 10;

void setup() {
  pinMode(pirSensor, INPUT);
  pinMode(ldr, INPUT);
  pinMode(relay, OUTPUT);
  Serial.begin(9600);
  Serial.println(" test!");
  dht.begin();
  
}

void loop() {
  int pir = digitalRead(pirSensor);
  int ldr = analogRead(ldr);

  float h = dht.readHumidity();
  float t = dht.readTemperature();
  float f = dht.readTemperature(true);  


  if ((pir == 1)&&(ldr >=100)&&(t>=28 || h>=50)) {
    
      digitalWrite(relay, HIGH);
      delay(100);
    } 
    
  
  else{
    digitalWrite(relay, LOW);
    delay(100);
     
  }
}