#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
uint8_t heart[8] = {
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000,
};

void setup() 
{  
  lcd.begin(20, 4);
  lcd.backlight(); 
  lcd.clear();
  lcd.createChar(3, heart);
  lcd.setCursor(2,1);  
  lcd.print("  Eu \x03 Arduino");
}

//se tirar o loop, ele faz com que o coracao nao suma
//o loop esta fazendo ele aparecer devagar
void loop() {
  uint8_t heart2[8] = {0};
  for (int i = 0; i < 8; i++) {
    heart2[i] = heart[i];
    lcd.createChar(3, heart2);
    delay(100);
  }
  delay(500);
}