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

int servo = 9;
int buzzer = 13;
int potentio = A0;
int mapval;

Servo myservo;
LiquidCrystal_I2C lcd(0x27, 16, 2);

byte degr[] = {
  B00110,
  B01001,
  B01001,
  B00110,
  B00000,
  B00000,
  B00000,
  B00000
};

void setup() {
  pinMode(buzzer, OUTPUT);
  myservo.attach(9);
  lcd.init();
  lcd.backlight();
  lcd.createChar(0, degr);
}

void loop() {

  int potentio_value = potentioValue();
  mapval = map(potentio_value, 0, 1023, 0, 180);

  myservo.write(mapval);
  // This is required so that the servo won't broke down
  delay(15);

  beep();
  
  lcd.setCursor(0,0);
  lcd.print("Potensio: " + String(potentio_value));
  lcd.setCursor(0,1);
  lcd.print("Derajat: " + String(mapval));

  if(String(mapval).length() == 3){
    lcd.setCursor(12, 1);
    lcd.write(0);
  }else if(String(mapval).length() == 2){
    lcd.setCursor(11, 1);
    lcd.write(0);
    lcd.setCursor(12, 1);
    lcd.print("  ");
  }else {
    lcd.setCursor(10, 1);
    lcd.write(0);
    lcd.setCursor(11, 1);
    lcd.print("  ");
  }
}

void beep(){
  if(mapval > 90) {
      tone(buzzer, 100, 150);
      delay(1000);
    } else if( mapval <90) {
      noTone(buzzer);
    }

  //tone(buzzer, 100, 150);
  //delay(1000);
}

int potentioValue(){
  int val = analogRead(potentio);
  return val;
}