#include <Servo.h>
  #include <Wire.h>
  #include <LiquidCrystal_I2C.h>
  LiquidCrystal_I2C lcd(0x27, 16, 2);  // Change the I2C addresrs if needed
  Servo servo;
  
  String textMessage;
  int led1 = 2;
  int led2 = 3;
  int led3 = 4;
  int led4 = 5;
  
  const int trigPins = 12;
  const int echoPins= 11;
  
  const int trigPinl = 10;
  const int echoPinl= 9;
  
  const int servoPin = 6;
  
  void setup() {
    Serial.begin(9600);
    servo.attach(servoPin); 
    pinMode(trigPins, OUTPUT);
    pinMode(echoPins, INPUT);
    pinMode(trigPinl, OUTPUT);
    pinMode(echoPinl, INPUT); 
  
    pinMode(led1, OUTPUT);
    pinMode(led2, OUTPUT);
    pinMode(led3, OUTPUT);
    pinMode(led4, OUTPUT);

    lcd.init();
    lcd.clear();
    lcd.begin(20, 4);
    lcd.backlight();  // Tursn on the LCD backlight
    lcd.setCursor(0, 0);
    lcd.print("MUNICIPALCORPORATIOn");
    lcd.setCursor(0, 1);
    lcd.print("  SMART-E-DUSTBIN");
  
  }
  
  void loop()
  {
    digitalWrite(trigPins, LOW);
    delayMicroseconds(2);
    digitalWrite(trigPins, HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPins, LOW);
  
    long durations = pulseIn(echoPins, HIGH);
    int distances = durations * 0.034 / 2;
  
    digitalWrite(trigPinl, LOW);
    delayMicroseconds(2);
    digitalWrite(trigPinl, HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPinl, LOW);
  
    long durationl = pulseIn(echoPinl, HIGH);
    int distancel = durationl * 0.034 / 2;
    
   if (distancel <= 15 )
    {
      digitalWrite(led1,HIGH);    
      digitalWrite(led2,HIGH);
      digitalWrite(led3,HIGH);
      digitalWrite(led4,HIGH);
      lcd.setCursor(0, 2);
      lcd.print("BIN CAPACITY:FULL   ");
      sendsms();
    } 
  
    else if (distancel <= 30)
     {
      
      digitalWrite(led1,LOW);
      digitalWrite(led2,HIGH);
      digitalWrite(led3,HIGH);
      digitalWrite(led4,HIGH);  
  
      lcd.setCursor(0, 2);
      lcd.print("BIN CAPACITY:HALF   ");
      
    }
  
  
      else if (distancel <= 50)
     {
      
      digitalWrite(led1,LOW);
      digitalWrite(led2,LOW);
      digitalWrite(led3,HIGH); 
      digitalWrite(led4,HIGH); 
  
      lcd.setCursor(0, 2);
      lcd.print("BIN CAPACITY:MEDIUM   ");
      
    }
  
  
    else if (distancel <= 65)
     {
      digitalWrite(led1,LOW);
      digitalWrite(led2,LOW);
      digitalWrite(led3,LOW);
      digitalWrite(led4,HIGH);
  
      lcd.setCursor(0, 2);
      lcd.print("BIN CAPACITY:EMPTY  ");
  
    }
  
  if (distances <=50)
  {
    lcd.setCursor(0, 3);
    lcd.print("BIN STATUS : OPEN ");
        
    servo.write(30);//open
    delay(2000);
  
  }
  
  else 
  {
    lcd.setCursor(0, 3);
    lcd.print("BIN STATUS : CLOSE");
    servo.write(90);// close
    
  }
  }
  void sendsms()
  {
      Serial.print("AT+CMGF=1\r");
      delay(100);
      Serial.println("AT+CMGS =\"+919581654845\"");
      delay(100);
    //  Serial.println("BUSTBIN SB32 IS FULL AT DESHAIPET AND AT Location:" + String("Lat: ") +String(Lat) + " "+String("Lon: ") + String(Lon));
     Serial.println("SMART BUSTBIN MC21 IS FULL AT O-CITY MILLS GROUND LOCATION : https://maps.app.goo.gl/xWGeAe6N2kBKGFR17");
      delay(100);
      Serial.println((char)26);
      delay(100);
      Serial.println();
      delay(30000);
  
  }
  // code final no error all ok tested by kanna