/*****************************************************
* PROGRAM WATTER LEVEL MENGGUNAKAN ULTRASONIC SENSOR *
*   XI-TEDK2-10-FANDY FIRMAN FADHILLAH-WATTER LEVEL  *
*****************************************************/
int led = 3;
int buzzer = 2;
int trig = 12;
int echo = 11;
long jarak,durasi;
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
  pinMode(led, OUTPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  Serial.begin(9600);
  Serial.println( "Fully" );
  lcd.init();
  lcd.clear();
  lcd.backlight();
  lcd.setCursor(1,0);
  lcd.print("Kumaha Barudak");
  lcd.setCursor(11,1);
  lcd.print("WELL");
  delay(2000);
  lcd.clear();
}

void loop(){
  digitalWrite(trig, HIGH);
  delayMicroseconds(5);
  digitalWrite(trig, LOW);
  delayMicroseconds(5);

  durasi = pulseIn(echo, HIGH);
  jarak = durasi/58.35;

  Serial.print(jarak);
  Serial.println(" cm");

  lcd.setCursor(0,0);
  lcd.print("jarak =     cm");
  lcd.setCursor(9,0);
  lcd.print(jarak);
  delay(270);


  if (jarak >= 100){
    digitalWrite(led, HIGH);
    tone (buzzer, 1000, 600);
    delay(600);
    tone (buzzer, 0, 600);
    delay(600);
  }
  else if (jarak < 100){
    tone (buzzer, 0, 600);
  
  }


  if (jarak >= 10)
    digitalWrite(led, HIGH);
  else if (jarak < 10){
    digitalWrite(led, LOW);
  }
  
}