#include <LiquidCrystal_I2C.h>

#define I2C_DEVICE_ADDR 0x27

#define LCD_ROWS 4
#define LCD_COLS 20

LiquidCrystal_I2C lcd(I2C_DEVICE_ADDR, LCD_COLS, LCD_ROWS);

byte Heart[8] = {0b00000,0b01010,0b11111,0b11111,0b01110,0b00100,
0b00000,0b00000};

byte Bell[8] = {0b00100,0b01110,0b01110,0b01110,0b11111,0b00000,
0b00100,0b00000};

byte Alien[8] = {0b11111,0b10101,0b11111,0b11111,0b01110,0b01010,
0b11011,0b00000};

byte Check[8] = {0b00000,0b00001,0b00011,0b10110,0b11100,0b01000,
0b00000,0b00000};

byte Speaker[8] = {0b00001,0b00011,0b01111,0b01111,0b01111,0b00011,
0b00001,0b00000};

byte Sound[8] = {0b00001,0b00011,0b00101,0b01001,0b01001,0b01011,
0b11011,0b11000};

byte Skull[8] = {0b00000,0b01110,0b10101,0b11011,0b01110,0b01110,
0b00000,0b00000};

byte Lock[8] = {0b01110,0b10001,0b10001,0b11111,0b11011,0b11011,
0b11111,0b00000};

void setup() {
  lcd.init();
  lcd.clear();
  lcd.backlight();

  lcd.createChar(0, Heart);
  lcd.createChar(1, Bell);
  lcd.createChar(2, Alien);
  lcd.createChar(3, Check);
  lcd.createChar(4, Speaker);
  lcd.createChar(5, Sound);
  lcd.createChar(6, Skull);
  lcd.createChar(7, Lock);

  // Print a message on both lines of the LCD.
  lcd.setCursor(2,0);   //Set cursor to character 2 on line 0
  lcd.print("Hello world!");
  
  lcd.setCursor(2,1);   //Move cursor to character 2 on line 1
  lcd.print("LCD Tutorial");

  lcd.blink();
  delay(2000);
  lcd.noBlink();

  lcd.cursor();
  delay(2000);
  lcd.noCursor();

  lcd.scrollDisplayRight();
  delay(500);
  lcd.scrollDisplayRight();
  delay(500);
  lcd.scrollDisplayLeft();
  delay(500);

  lcd.noDisplay();
  delay(500);
  lcd.display();

  delay(2000);
  lcd.clear();
  lcd.print("Custom Character");
  lcd.setCursor(0, 1);
  lcd.write(0);
  lcd.setCursor(2, 1);
  lcd.write(1);
  lcd.setCursor(4, 1);
  lcd.write(2);
  lcd.setCursor(6, 1);
  lcd.write(3);
  lcd.setCursor(8, 1);
  lcd.write(4);
  lcd.setCursor(10, 1);
  lcd.write(5);
  lcd.setCursor(12, 1);
  lcd.write(6);
  lcd.setCursor(14, 1);
  lcd.write(7);
}

void loop() {

}