#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Set the LCD address to 0x27 or 0x3F depending on your module
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Define custom character data. Each character is 8 bytes (8x8 pixel).
byte chr[8][8] = {
  {
  0x01,
  0x03,
  0x07,
  0x0F,
  0x1F,
  0x03,
  0x03,
  0x03
},
 {
  0x18,
  0x18,
  0x18,
  0x18,
  0x18,
  0x18,
  0x18,
  0x18
},
  {
  0x00,
  0x00,
  0x00,
  0x03,
  0x03,
  0x03,
  0x1F,
  0x1F
},
  {
  0x00,
  0x00,
  0x00,
  0x18,
  0x18,
  0x18,
  0x1F,
  0x1F
},
// |||||||||||||||||||||||||||||
    {
  0x03,
  0x03,
  0x03,
  0x03,
  0x03,
  0x03,
  0x1F,
  0x1F
},
  {
  0x18,
  0x18,
  0x18,
  0x18,
  0x18,
  0x18,
  0x1E,
  0x1E
},
  {
  0x1F,
  0x1F,
  0x03,
  0x03,
  0x03,
  0x00,
  0x00,
  0x00
},
  {
  0x1F,
  0x1F,
  0x18,
  0x18,
  0x18,
  0x00,
  0x00,
  0x00
}
};

byte chr1[8][8] = {
  {
  0x07,
  0x0F,
  0x1C,
  0x18,
  0x18,
  0x1C,
  0x0F,
  0x07
},
{
  0x1C,
  0x1E,
  0x07,
  0x03,
  0x03,
  0x07,
  0x1E,
  0x1C
},
{
  0x00,
  0x00,
  0x00,
  0x00,
  0x00,
  0x07,
  0x07,
  0x00
},
{
  0x00,
  0x00,
  0x00,
  0x00,
  0x00,
  0x1C,
  0x1C,
  0x00
},

// |||||||||||||||||||||||||||||

{
  0x07,
  0x0F,
  0x1C,
  0x18,
  0x18,
  0x1C,
  0x0F,
  0x07
},
{
  0x1C,
  0x1E,
  0x07,
  0x03,
  0x03,
  0x07,
  0x1E,
  0x1C
},
{
  0x00,
  0x07,
  0x07,
  0x00,
  0x00,
  0x00,
  0x00,
  0x00
},
{
  0x00,
  0x1C,
  0x1C,
  0x00,
  0x00,
  0x00,
  0x00,
  0x00
}
};


void setup() {
  lcd.init(); // Initialize the LCD
  lcd.backlight(); // Turn on backlight

  // Create custom characters
  for (int i = 0; i < 8; i++) {
    lcd.createChar(i, chr[i]);
  }

  // Display custom characters in the first row
  for (int i = 0; i < 4; i++) {
    lcd.setCursor(i, 0); // Set cursor to the first row
    lcd.write(i); // Display custom character
  }
  
  // Display custom characters in the second row
  for (int i = 4; i < 8; i++) {
    lcd.setCursor(i - 4, 1); // Set cursor to the second row
    lcd.write(i); // Display custom character
  }

  

}

void loop() {
  // Nothing to do here
}