#include <Servo.h>
Servo servo;

void setup() {
  pinMode(12, OUTPUT); //PIR sensor
  pinMode(2, OUTPUT); // trig
  pinMode(3, INPUT); //echo
  pinMode(5,OUTPUT); //led
  servo.attach(9);
  Serial.begin(9600);
}

void loop() {
  long duration, distance;
  digitalWrite(2, LOW);
  delayMicroseconds(2);
  digitalWrite(2, HIGH);
  delayMicroseconds(10);
  digitalWrite(2, LOW);
  
  
  duration = pulseIn(3, HIGH);
  
  
  distance = (duration / 2) / 29.1; 
  
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");

 
  if (distance < 10) {
    digitalWrite(5, HIGH);
    Serial.println("Dustbin is Full.");
    servo.write(90); 


  }else{
    servo.write(0);
    digitalWrite(5, LOW);
    Serial.println("Dustbin is Empty.");
    

  }

  delay(500); 
}