#include <LiquidCrystal.h>
#include <Servo.h>
Servo miservo;
const int ledVerde = 8;
const int echopin = 9;
const int trigpin = 10;
long duracion;
float distancia;
LiquidCrystal lcd(13, 12, 5, 4, 3, 2);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  miservo.attach(11);
  pinMode(trigpin, OUTPUT);
  pinMode(echopin, INPUT);
  miservo.write(0);
  pinMode(ledVerde, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(trigpin, LOW);
  delayMicroseconds(2);

  digitalWrite(trigpin, HIGH);
  delayMicroseconds(10);

  digitalWrite(trigpin, LOW);

  duracion = pulseIn(echopin, HIGH);
  distancia = (duracion * 0.034) / 2;

  if (distancia < 15) {

    miservo.write(90);
    digitalWrite(ledVerde, HIGH);

    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("Acceso Permitido");

    delay(3000);

    miservo.write(0);
    digitalWrite(ledVerde, LOW);
  }
  else {

    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("Esperando Usuario");

    delay(500);
  }
}

//MELVIN ADAN SANTOS CLAROS
//0318200601618