#include <Wire.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
byte segment[8][8] =
{
  { B01111,  B11111,  B11111,  B11111,  B11111,  B11111,  B11111,  B11111 },
  { B11111,  B11111,  B11111,  B00000,  B00000,  B00000,  B00000,  B00000 },
  { B11110,  B11111,  B11111,  B11111,  B11111,  B11111,  B11111,  B11111 },
  { B11111,  B11111,  B11111,  B11111,  B11111,  B11111,  B11111,  B01111 },
  { B00000,  B00000,  B00000,  B00000,  B00000,  B11111,  B11111,  B11111 },
  { B11111,  B11111,  B11111,  B11111,  B11111,  B11111,  B11111,  B11110 },
  { B11111,  B11111,  B11111,  B00000,  B00000,  B00000,  B11111,  B11111 },
  { B11111,  B00000,  B00000,  B00000,  B00000,  B11111,  B11111,  B11111 }
};
int col = 0;
int number;
void setup()
{
  Wire.begin();
  // Initializes the LCD
  lcd.begin(16, 2);

  // Associates each created segment with a number
  for (byte i = 0; i < 8; i++) {
    lcd.createChar(i, segment[i]);
  }
}

void loop()
{
  col=0;
  digit8();
  col=4;
  digit7();
  col=9;
  digit6();
  col=13;
  digit5();
  delay(1000);
}


void digit0() // Set the segments to the number 0
{
  lcd.setCursor(col, 0); // Select the top line
  lcd.write((byte)0);  // Segment 0 selected
  lcd.write(1);  // Segment 1 selected
  lcd.write(2);
  lcd.setCursor(col, 1); // Select the bottom line
  lcd.write(3);
  lcd.write(4);
  lcd.write(5);
}

void digit1() // Set the segments to the number 1
{
  lcd.setCursor(col, 0);
  lcd.write(1);
  lcd.write(2);
  lcd.setCursor(col + 1, 1);
  lcd.write(5);
}

void digit2() // Set the segments to the number 2
{
  lcd.setCursor(col, 0);
  lcd.write(6);
  lcd.write(6);
  lcd.write(2);
  lcd.setCursor(col, 1);
  lcd.write(3);
  lcd.write(7);
  lcd.write(7);
}

void digit3()  // Set the segments to the number 3
{
  lcd.setCursor(col, 0);
  lcd.write(6);
  lcd.write(6);
  lcd.write(2);
  lcd.setCursor(col, 1);
  lcd.write(7);
  lcd.write(7);
  lcd.write(5);
}

void digit4()  // Set the segments to the number 4
{
  lcd.setCursor(col, 0);
  lcd.write(3);
  lcd.write(4);
  lcd.write(2);
  lcd.setCursor(col + 2, 1);
  lcd.write(5);
}

void digit5()  // Set the segments to the number 5
{
  lcd.setCursor(col, 0);
  lcd.write((byte)0);
  lcd.write(6);
  lcd.write(6);
  lcd.setCursor(col, 1);
  lcd.write(7);
  lcd.write(7);
  lcd.write(5);
}

void digit6()  // Set the segments to the number 6
{
  lcd.setCursor(col, 0);
  lcd.write((byte)0);
  lcd.write(6);
  lcd.write(6);
  lcd.setCursor(col, 1);
  lcd.write(3);
  lcd.write(7);
  lcd.write(5);
}

void digit7() // Set the segments to the number 7
{
  lcd.setCursor(col, 0);
  lcd.write(1);
  lcd.write(1);
  lcd.write(2);
  lcd.setCursor(col + 1, 1);
  lcd.write((byte)0);
}

void digit8()  // Set the segments to the number 8
{
  lcd.setCursor(col, 0);
  lcd.write((byte)0);
  lcd.write((byte)6);
  lcd.write(2);
  lcd.setCursor(col, 1);
  lcd.write(3);
  lcd.write(7);
  lcd.write(5);
}

void digit9() // Set the segments to the number 9
{
  lcd.setCursor(col, 0);
  lcd.write((byte)0);
  lcd.write((byte)6);
  lcd.write((byte)2);
  lcd.setCursor(col + 2, 1);
  lcd.write((byte)5);
}

void showDigit() // Shows the number in the position defined by "X"
{
  switch (number) {
    case 0: digit0();
      break;
    case 1: digit1();
      break;
    case 2: digit2();
      break;
    case 3: digit3();
      break;
    case 4: digit4();
      break;
    case 5: digit5();
      break;
    case 6: digit6();
      break;
    case 7: digit7();
      break;
    case 8: digit8();
      break;
    case 9: digit9();
      break;
  }
}