#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
uint8_t a[8] = 
{
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000,
};

void setup() 
{
  lcd.createChar(3,a);
  lcd.begin(16, 2);
  
}

void loop() 
{
  lcd.write(3);
}