#include <Servo.h>
#include<LiquidCrystal.h>
int rs=7,en=6,d4=11,d5=10,d6=9,d7=8;
LiquidCrystal lcd(rs,en,d4,d5,d6,d7);
Servo myservo;
int trigpin=2;
int echopin=4;
int array[5];
int buzz=3;
void setup()
 {
  lcd.begin(16,2);
  Serial.begin(9600);
  pinMode(echopin, INPUT);
  pinMode(trigpin, OUTPUT);
  myservo.attach(13);
  lcd.print("welcome");
  delay(1000);
}

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

if(digitalRead(5)==1)
{
  lcd.clear();
  digitalWrite(3, HIGH);
  tone(3,500);
  myservo.write(0);
  lcd.setCursor(1, 0);
  lcd.print("Dustbin");
  lcd.setCursor(0, 1);
  lcd.print("IS FULL!!");
} 
else
{
  if((total/5.0)<100)
  {
  myservo.write(90);
  lcd.print("Dustbin Open");
  }
  else
  {
    myservo.write(0);
    lcd.print("Dustbin Closed");
  }
}
delay(1500);
}

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