#include <NewPing.h>
#include <LiquidCrystal_I2C.h>
const int TriggerPin = 11;
const int EchoPin = 12;
#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   2

// 400cm = maxDistance
NewPing sonar(TriggerPin, EchoPin, 389);
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
  pinMode(3,OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(8, OUTPUT);
  lcd.init();
  lcd.backlight();
  
}

void loop() {
 
  int distance = sonar.ping_cm();
{
    if (distance<=20) {
    ("Below 20cm from Top/Tip of Tank ,Turn oN Motor");
      digitalWrite(3,HIGH);
      digitalWrite(9, HIGH);
       digitalWrite(10,LOW);
        digitalWrite(8, LOW);
      lcd.setCursor(0, 1);
  lcd.print("Motor ON Tank Below");
  lcd.setCursor(0, 2);
  lcd.print("20% Green Led Glows");
}
else if (distance==200) 
      {digitalWrite(8, HIGH);
       digitalWrite(3,HIGH);
        digitalWrite(10,LOW);
         digitalWrite(9, LOW);
      lcd.clear();
      lcd.setCursor(0, 1);
  lcd.print("Tank Level 50% Half");
  lcd.setCursor(0, 2);
  lcd.print("Blue Led Glows");
     }
 else if (distance==389) 
 {
    ("above 390cm from Top/Tip of Tank, Turn off Motor");
      digitalWrite(3,LOW); 
      digitalWrite(10, HIGH);
      digitalWrite(8, LOW);
       digitalWrite(9, LOW);
      lcd.clear();
      lcd.setCursor(0, 1);
  lcd.print("Motor Off Tank full");
  lcd.setCursor(0, 2);
  lcd.print("Red Led Glows 100%"); } 
  }}