#include <Servo.h>

const int trigPin = 9;
const int echoPin = 8;
const int servoPin = 10;
const int green1 = 2;
const int red1 = 3; 

Servo myServo;

void setup() {
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(green1, OUTPUT);
  pinMode(red1, OUTPUT);

  myServo.attach(servoPin);
  myServo.write(0);

  Serial.begin(9600);
}

void loop() {
  long dure, dis;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  dure = pulseIn(echoPin, HIGH);
  dis = (dure / 2) / 29.1;

  if (dis <= 10) {
    myServo.write(90); 
    digitalWrite(green1, LOW); 
    digitalWrite(red1, HIGH); 
  } else {
    myServo.write(0); 
    digitalWrite(green1, HIGH); 
    digitalWrite(red1, LOW);
  }
  delay(500);
}