#include <Servo.h>
#define trigPin 13
#define echoPin 12
#define greenLED 11
#define redLED 10
int girvoPin = 3;
Servo Girvo1;

void setup() {
  Serial.begin(9600);
  pinMode (trigPin,OUTPUT); //signal
  pinMode (echoPin, INPUT);
  pinMode (greenLED, OUTPUT);
  pinMode (redLED, OUTPUT);
  Girvo1.attach(girvoPin);

}

void loop() {
  long duration, distance;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn (echoPin, HIGH);
  distance = (duration/2)/ 29.1;
  if(distance < 4) {//This is where the LED On/Off happens
  digitalWrite(greenLED, HIGH);
  //When the Red condition is met, the Green LED should turn off
  digitalWrite(redLED, LOW);
  Girvo1.write(0);
  delay(1000);
  } else {
    digitalWrite(greenLED, LOW);
    digitalWrite(redLED, HIGH);
    Girvo1.write(90);
    delay(1000);
  }

  if (distance >= 200 || distance <= 0){
    Serial.println("Out of range");
  } else {
    Serial.print(distance);
    Serial.println(" cm");

    }
  
  delay(1000);
}