#include <LiquidCrystal_I2C.h> 

LiquidCrystal_I2C lcd (0x27, 16, 2); 

byte customChar0 [8] = {
  0b00001,
  0b00010,
  0b00100,
  0b01000,
  0b01000,
  0b00100,
  0b00010,
  0b00001
};

byte customChar1 [8] = {
  0b00000,
  0b11110,
  0b00100,
  0b01000,
  0b00100,
  0b00010,
  0b00001,
  0b11110
};

byte customChar2 [8] = {
  0b00000,
  0b01010,
  0b01010,
  0b00000,
  0b10001,
  0b01110,
  0b00000,
  0b00000
};

byte customChar3 [8] = {
  0b00000,
  0b00100,
  0b01010,
  0b10001,
  0b01010,
  0b00100,
  0b00000,
  0b00000
};

byte customChar4 [8] = {
  0b00000,
  0b00100,
  0b01110,
  0b11111,
  0b01110,
  0b00100,
  0b00000,
  0b00000
};

byte customChar5 [8] = {
  0b01110,
  0b10001,
  0b10001,
  0b10001,
  0b01110,
  0b00000,
  0b11111,
  0b00000
};

byte customChar6 [8] = {
  0b01110,
  0b10001,
  0b10001,
  0b01110,
  0b10000,
  0b01000,
  0b00100,
  0b00010
};

byte customChar7 [8] = {
  0b00000,
  0b01010,
  0b11111,
  0b01010,
  0b11111,
  0b01010,
  0b00000,
  0b00000
};

void setup() {
  lcd.init(); 

  lcd.backlight(); 

  lcd.createChar(0, customChar0); 
  lcd.createChar(1, customChar1); 
  lcd.createChar(2, customChar2); 
  lcd.createChar(3, customChar3); 
  lcd.createChar(4, customChar4); 
  lcd.createChar(5, customChar5); 
  lcd.createChar(6, customChar6); 
  lcd.createChar(7, customChar7); 

  lcd.setCursor (2,0); 

  lcd.write((byte)0);
  lcd.write((byte)1);
  lcd.write((byte)2);
  lcd.write((byte)3);

  lcd.setCursor (2,1);

  lcd.write((byte)4);
  lcd.write((byte)5);
  lcd.write((byte)6);
  lcd.write((byte)7);

}

void loop() {
  // put your main code here, to run repeatedly:

}