int pirPin = 7;
int redLED = 13;
int greenLED = 11;

void setup() {
  pinMode(pirPin, INPUT);  digitalWrite(pirPin, LOW);
  pinMode(redLED, OUTPUT);
  pinMode(greenLED, OUTPUT);
}

void loop() {
  if (digitalRead(pirPin) == HIGH) {   // Motion Detected
    digitalWrite(redLED, HIGH);
    digitalWrite(greenLED, LOW);
  }else{
    digitalWrite(redLED, LOW);
    digitalWrite(greenLED, HIGH);
  }
  delay(20);
}