#include <LiquidCrystal_I2C.h> //מזמן סיפריית LCD
#include <Wire.h>

LiquidCrystal_I2C lcd(0x27,16,2);




int buzz1=13;
int buzz2=12;
int buzz3=11;
int buzz4=10;

int led1=6;
int led2=5;
int led3=4;

int g=392;
int a=440;
int b=493;
int c=523;
int d=587;
int e=659;
int f=349;

int sw=7;

int ran=0;


void setup() {
  // put your setup code here, to run once:
  pinMode(sw, INPUT_PULLUP);

  pinMode(buzz1, OUTPUT);
  pinMode(buzz2, OUTPUT);
  pinMode(buzz3, OUTPUT);
  pinMode(buzz4, OUTPUT);

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);

  lcd.begin(16,2);
  lcd.backlight();
  lcd.setBacklight(HIGH);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(sw)==LOW)
  {
    ha();
    tone(buzz1, g);
    delay(750);
    random1();
    tone(buzz1, a);
    delay(500);
    random1();
    tone(buzz1, g);
    delay(500);
    random1();
    tone(buzz1, c);
    delay(500);
    random1();
    tone(buzz1, b);
    delay(500);
    random1();
    lcd.clear();

    noTone(buzz1);
    delay(400);

    ha();
    tone(buzz1, g);
    delay(750);
    random1();
    tone(buzz1, a);
    delay(500);
    random1();
    tone(buzz1, g);
    delay(500);
    random1();
    tone(buzz1, d);
    delay(500);
    random1();
    tone(buzz1, c);
    delay(500);
    random1();
    lcd.clear();

    noTone(buzz1);
    delay(400);

    to();
    tone(buzz1, g);
    delay(750);
    random1();
    tone(buzz1,e);
    delay(500);
    random1();
    tone(buzz1,c);
    delay(500);
    random1();
    tone(buzz1,b);
    delay(500);
    random1();
    tone(buzz1,a);
    delay(750);
    random1();
    lcd.clear();

    noTone(buzz1);
    delay(400);

    ha();
    tone(buzz1, f);
    delay(750);
    random1();
    tone(buzz1, e);
    delay(750);
    random1();
    tone(buzz1, c);
    delay(750);
    random1();
    tone(buzz1, d);
    delay(600);
    random1();
    tone(buzz1, c);
    delay(500);
    random1();
  }
  lcd.clear();
  noTone(buzz1);
}

void ha()
{
  lcd.clear();
  lcd.setCursor(1,0);
  lcd.print("Happy Birthday");
  lcd.setCursor(5,1);
  lcd.print("To you");
}

void to()
{
  lcd.clear();
  lcd.setCursor(1,0);
  lcd.print("Happy Birthday");
  lcd.setCursor(2,1);
  lcd.print("Dear  [name]");
}

void random1()
{
  digitalWrite(led1,LOW);
  digitalWrite(led2,LOW);
  digitalWrite(led3,LOW);
  ran=random(1,6);
  if (ran==1)
    digitalWrite(led1, HIGH);
  if (ran==1)
    digitalWrite(led2, HIGH);
  if (ran==3)
    digitalWrite(led3, HIGH);
  if (ran==4)
  {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
  }
  if (ran==5)
  {
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
  }
  if (ran==6)
  {
    digitalWrite(led1, HIGH);
    digitalWrite(led3, HIGH);
  }

}