/*
    1.  If an object is detected, turn the 
      servo motor 90 degrees and turn on the LED
    2.  If there is no object detected, turn the 
      servo motor 90 degrees back and turn off the LED
  */
  
  #include <ESP32Servo.h>
  Servo Serv;

  int pinIR=5; //IR sensor digital pin
  int servoPin=18; //servo motor pin
  int pinLED=2;
  int val=0;

  void setup(){
    Serv.attach(servoPin, 500, 2400);
    Serv.write(0);//back to 0 degrees 
    pinMode(pinLED,OUTPUT);
       
  }

  int pos = 90;

  void loop() {

    val = digitalRead(pinIR);
 
    if (val ==0){ 
      digitalWrite(pinLED,LOW);
      Serv.write(pos);
      delay(4060);
    }
    else {
      digitalWrite(pinLED,HIGH);
      Serv.write(90);
      delay(3650);
      Serv.write(40);
      delay(1320);      
      Serv.write(120);
      delay(800);
      Serv.write(40);
      delay(1420);
      Serv.write(90);
      delay(650);
      Serv.write(40);
      delay(1320);      
      Serv.write(120);
      delay(800);
      Serv.write(40);
      delay(1420);
    }
  }