#include <LiquidCrystal_I2C.h>

#define trigpin 7
#define echopin 6

LiquidCrystal_I2C lcd(0x27,16,2);

float duration;
int distance;
int level;


void setup() {
  // put your setup code here, to run once:
pinMode(trigpin, OUTPUT);
pinMode(echopin, INPUT);

lcd.init();
lcd.backlight();
lcd.setCursor(3,0);
lcd.print("WELCOME TO");
lcd.setCursor(0,1);
lcd.print("SHAMS ROBO CHAMP");
delay(2000);
lcd.clear();

}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(trigpin, LOW);
delay(2);
digitalWrite(trigpin, HIGH);
delay(10);
digitalWrite(trigpin, LOW);

duration=pulseIn(echopin,HIGH);

distance=duration*0.0343/2;

level = map(distance,350,10,20,100);


if(distance==350){
lcd.setCursor(0,0);
lcd.print("Tank : Empty");
}


else if(distance==175){
lcd.setCursor(0,0);
lcd.print("Tank : Half ");
}


else if(distance==20 ){
lcd.setCursor(0,0);
lcd.print("Tank : Full ");
}


else{
lcd.setCursor(0,0);
lcd.print("Tank :");
lcd.setCursor(0,1);
lcd.print("Tank level");
lcd.setCursor(12,1);
lcd.print("    ");
lcd.setCursor(12,1);
lcd.print("%");
lcd.print(level);
lcd.setCursor(0,0);
lcd.print("Tank :.");
delay(100);
lcd.setCursor(0,0);
lcd.print("Tank :..");
delay(100);
lcd.setCursor(0,0);
lcd.print("Tank :...");
delay(100);
lcd.setCursor(0,0);
lcd.print("Tank :....");
delay(100);
lcd.setCursor(0,0);
lcd.print("Tank :.....");
delay(100);
lcd.setCursor(0,0);
lcd.print("Tank :......");
delay(100);
}









}