#include <ESP32Servo.h>
#define LED_PIN 2
#define PIR_PIN 4

const int SERVO_PIN = 5; 
Servo servo;

int maximumRange = 400;
int minimumRange = 0; 
long duration, distance;

int trigPin = 19;
int echoPin = 18;


void setup(){
Serial.begin(9600);
pinMode(LED_PIN,OUTPUT);
pinMode(PIR_PIN, INPUT);

  servo.attach(SERVO_PIN);
  servo.write(90);

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
if (digitalRead(PIR_PIN) == HIGH){
digitalWrite(LED_PIN, HIGH);
Serial.println("LIGHT ON");
}
else{
  digitalWrite(LED_PIN,LOW);
}

delay(100);

 digitalWrite(trigPin, LOW); 
 delayMicroseconds(2); 
 digitalWrite(trigPin, HIGH);
 delayMicroseconds(10); 
 digitalWrite(trigPin, LOW);
 duration = pulseIn(echoPin, HIGH);
 distance = duration/58.2; 
 
 if (distance < 20) {
    Serial.println("object detected!");
    servo.write(180); 
    delay(1000);            
  }
  else {
    servo.write(90);   
    delay(1000);  
    Serial.println("No object detected");
  }

  delay(100);
}