#define LDR 2 
#define PIR 22 
#define LED 33 
int pirState;  
int ldrValue;   

void setup() {
  //Serial.begin(9600); // Initialize serial communications with the PC 
  pinMode(LED, OUTPUT); //  If LED is activated wil turn on as an ouput 
  pinMode(PIR, INPUT); // PIR sensor detects if there is motion 
  digitalWrite(LED, LOW); // LED turns off if there is light and or no motion 
}
void loop(){
  ldrValue = analogRead(LDR);  // initialize Photoresistor output 
   if (ldrValue <= 512) { // if photoresitor detects ldr value less than or equal to 512,
    digitalWrite(LED, HIGH); // then the LED light will turn on. 
  } 
  else { 
    pirState = digitalRead(PIR); // 
    if (pirState == HIGH) {  
      digitalWrite(LED, HIGH);   
      delay(1000); 
      digitalWrite(LED, LOW); 
      delay(1000);
    } 
    else {  
      digitalWrite(LED, LOW); 
    }
  }
    delay(1000);
}