#include <Servo.h>
#include <LiquidCrystal_I2C.h>

#define buzzer 7

#define PIN_TRIG 4
#define PIN_ECHO 3

Servo myservo;
int potpin = 0;
int val;

LiquidCrystal_I2C lcd(0x27,16,2);

byte Simbol_derajat = B11011111;

void setup() 
{
  pinMode(buzzer, OUTPUT);

  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);

  myservo.attach(2);

  lcd.init();
  lcd.backlight();
}

void loop() 
{
  //tone(buzzer, val, 1000);

  digitalWrite(PIN_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);

  // Read the result:
  int duration = pulseIn(PIN_ECHO, HIGH);
  val = duration / 58;
  lcd.setCursor(0,0);
  lcd.print("Jarak : " + String(val) + " ");

  if(val <= 200)
  {
    tone(buzzer, 1000, 1000);
    myservo.write(0);
    lcd.setCursor(0,1);
    lcd.print("Derajat : 0");
    lcd.write(Simbol_derajat);
    lcd.print(" ");
    delay(15);
  }
  
  else
  {
    noTone(buzzer);
    myservo.write(90);
    lcd.setCursor(0,1);
    lcd.print("Derajat : 90");
    lcd.write(Simbol_derajat);
    lcd.print(" ");
    delay(15);
  }
  


  

}