#include <ESP32Servo.h>
Servo MG995_Servo;
#define servo 15
#define echoPin 4
#define trigPin 2
long duration;
int distance;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Smart Dustbin");
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}
void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;

  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");

  if(distance <=5) {
    MG995_Servo.attach(servo);
    MG995_Servo.write(0); //Turn clockwise at high speed
    delay(3000);
    MG995_Servo.detach();
  }
  else {
    MG995_Servo.attach(servo);
    MG995_Servo.write(90); //Turn clockwise at high speed
    delay(3000);
    MG995_Servo.detach();
  }
}