#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
const int ATPIN=5;
const int AEPIN=6;
const int BTPIN=7;
const int BEPIN=8;
void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(ATPIN, OUTPUT);
  pinMode(AEPIN, INPUT);
  pinMode(BTPIN, OUTPUT);
  pinMode(BEPIN, INPUT);
  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  Serial.begin(9600);// put your setup code here, to run once:

}

void loop() {
 digitalWrite(ATPIN, LOW);
 delayMicroseconds(2);
  digitalWrite(ATPIN, HIGH);
 delayMicroseconds(10);
 digitalWrite(ATPIN, LOW);// put your main code here, to run repeatedly:
long duration=pulseIn(AEPIN, HIGH);
long distance= duration * 0.034/2;
Serial.print("distance");
Serial.println(distance);
if(distance < 400 && distance > 100)
{
  lcd.setCursor(0,0);
  lcd.print("BOX-1");
  lcd.setCursor(0,1);
  lcd.print(" LOW ");
  digitalWrite(3, HIGH);
  digitalWrite(11, LOW);
  digitalWrite(2, LOW);
  digitalWrite(4, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
}
if(distance < 100 && distance >50)
{
  lcd.setCursor(0,0);
  lcd.print("BOX-1");
  lcd.setCursor(0,1);
  lcd.print(" AVG ");
  digitalWrite(2, HIGH);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(9, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
}
if(distance < 50 && distance >0)
{
  lcd.setCursor(0,0);
  lcd.print("BOX-1");
  lcd.setCursor(0,1);
  lcd.print(" FULL ");
  digitalWrite(11, HIGH);
  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
}
digitalWrite(BTPIN, LOW);
 delayMicroseconds(2);
 digitalWrite(BTPIN, HIGH);
 delayMicroseconds(10);
 digitalWrite(BTPIN, LOW);
 long duration1=pulseIn(BEPIN, HIGH);
long distance1= duration1 * 0.034/2;
Serial.print("distance1");
Serial.println(distance1);
if(distance1 < 400 && distance1 >100)
{
  lcd.setCursor(8,0);
  lcd.print("BOX-2");
  lcd.setCursor(8,1);
  lcd.print(" LOW ");
  digitalWrite(4, HIGH);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(9, LOW);
  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
}
if(distance1 < 100 && distance1 > 50)
{
  lcd.setCursor(8,0);
  lcd.print("BOX-2");
  lcd.setCursor(8,1);
  lcd.print(" AVG ");
  digitalWrite(9, HIGH);
  digitalWrite(11, LOW);
  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(10, LOW);
}
if(distance1 < 50 && distance1 > 0)
{
  lcd.setCursor(8,0);
  lcd.print("BOX-2");
  lcd.setCursor(8,1);
  lcd.print(" FULL");
  digitalWrite(10, HIGH);
  digitalWrite(11, LOW);
  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(9, LOW);
}
}