#include<Servo.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(13,12,11,10,9,8);
Servo s1;
int trigpin=5;
int echopin=4;
int a[5];
void setup() {
  lcd.begin(16,2);
  Serial.begin(9600);
  pinMode(echopin, INPUT);
  pinMode(trigpin, OUTPUT);
  s1.attach(3);
  lcd.print("SMART DUSTBIN");
  delay(1000);
}

void loop() {
  lcd.clear();
int total=0;
  for(int i=0; i<5; i++){
    a[i]=measureDistance();
    Serial.println(a[i]);
    total+=a[i];
  }
Serial.println(total/5.0);

if(digitalRead(2)==1){
  lcd.clear();
  s1.write(0);
  lcd.print("Dustbin Full..!!");
}else{
  if((total/5.0)<100){
  s1.write(90);
  lcd.print("Dustbin Open");
  }else{
    s1.write(0);
    lcd.print("Dustbin Closed");
  }
}
delay(1500);
}

int measureDistance(){
  digitalWrite(trigpin,0);
  delayMicroseconds(2);
  digitalWrite(trigpin,1);
  delayMicroseconds(10);
  digitalWrite(trigpin,0);
  // delay(1000);
  long duration=pulseIn(echopin,1);
  int distance=duration*0.034/2;
  return distance;
}