#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

// Custom character for a heart
uint8_t heart[8] = {
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000,
};

// Custom character for an improved '@' symbol (Option 2)
uint8_t at_symbol_option2[8] = {
  0b00000,
  0b01110, 
  0b10111, 
  0b10101, 
  0b10111, 
  0b10010, 
  0b01110, 
  0b00000,
};

void setup() {
  lcd.createChar(3, heart);           
  lcd.createChar(4, at_symbol_option2); 
  lcd.begin(16, 2);
  lcd.print("I \x03 \x04 (@) Arduino"); 
}

void loop() { }