#include <Servo.h>

const int trigPin = 9;
const int echoPin = 8;
const int servoPin = 10;
const int greenLED1 = 2;
const int redLED1 = 3;
const int redLED2 = 4;
const int redLED3 = 5;

Servo myServo;

void setup() {
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(greenLED1, OUTPUT);
  pinMode(redLED1, OUTPUT);
  pinMode(redLED2, OUTPUT);
  pinMode(redLED3, OUTPUT);

  myServo.attach(servoPin);
  myServo.write(0); // Inicialmente el servo a 0°

  Serial.begin(9600);
}

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 <= 10) {
    myServo.write(90); // Mueve el servo a 90°
    digitalWrite(greenLED1, HIGH);
    digitalWrite(redLED1, LOW);
    digitalWrite(redLED2, LOW);
    digitalWrite(redLED3, LOW);
  } else {
    myServo.write(0); // Mueve el servo a 0°
    digitalWrite(greenLED1, LOW);
    digitalWrite(redLED1, HIGH);
    digitalWrite(redLED2, HIGH);
    digitalWrite(redLED3, HIGH);
  }
  delay(500);
}