Star Wars Arm communicator

/***************************************************
  This is a library for our I2C LED Backpacks

  Designed specifically to work with the Adafruit 16x8 LED Matrix backpacks
  ----> http://www.adafruit.com/products/2035
  ----> http://www.adafruit.com/products/2036
  ----> http://www.adafruit.com/products/2037
  ----> http://www.adafruit.com/products/2038
  ----> http://www.adafruit.com/products/2039
  ----> http://www.adafruit.com/products/2040
  ----> http://www.adafruit.com/products/2041
  ----> http://www.adafruit.com/products/2042
  ----> http://www.adafruit.com/products/2043
  ----> http://www.adafruit.com/products/2044
  ----> http://www.adafruit.com/products/2052

  These displays use I2C to communicate, 2 pins are required to
  interface. There are multiple selectable I2C addresses. For backpacks
  with 2 Address Select pins: 0x70, 0x71, 0x72 or 0x73. For backpacks
  with 3 Address Select pins: 0x70 thru 0x77

  Adafruit invests time and resources providing this open source code,
  please support Adafruit and open-source hardware by purchasing
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.
  BSD license, all text above must be included in any redistribution
 ****************************************************/

#include <Wire.h>
#include <Adafruit_GFX.h>
#include "Adafruit_LEDBackpack.h"

Adafruit_8x16matrix matrix = Adafruit_8x16matrix();

void setup() {
  Serial.begin(9600);
  Serial.println("jerry");

  matrix.begin(0x70);  // pass in the address
}

static const uint8_t PROGMEM
  Full_bmp[] =
  { B11111111,
    B11111111,
    B11111111,
    B11111111,
    B11111111,
    B11111111,
    B11111111,
    B11111111 },
  X_bmp[] =
  { B10000001,
    B11000011,
    B11100111,
    B11111111,
    B11111111,
    B11100111,
    B11000011,
    B10000001 },
  square_bmp[] =
  { B11111111,
    B10000001,
    B10000001,
    B10000001,
    B10000001,
    B10000001,
    B10000001,
    B11111111 },
   smsquare_bmp[] =
  { B00000000,
    B00000000,
    B00111100,
    B00111100,
    B00111100,
    B00111100,
    B00000000,
    B00000000 };

void loop() {

  matrix.clear();
  matrix.drawBitmap(0, 0, Full_bmp, 8, 8, LED_ON);
  matrix.drawBitmap(0, 8, X_bmp, 8, 8, LED_ON);
  matrix.writeDisplay();
  delay(1000);

  matrix.clear();
  matrix.drawBitmap(0, 8, smsquare_bmp, 8, 8, LED_ON);
  matrix.drawBitmap(0, 0, square_bmp, 8, 8, LED_ON);
  matrix.writeDisplay();
  delay(1000);

  matrix.clear();
  matrix.drawBitmap(0, 0, smsquare_bmp, 8, 8, LED_ON);
  matrix.drawBitmap(0, 8, Full_bmp, 8, 8, LED_ON);
  matrix.writeDisplay();
  delay(1000);

  matrix.clear();
  matrix.drawBitmap(0, 8, Full_bmp, 8, 8, LED_ON);
  matrix.drawBitmap(0, 0, square_bmp, 8, 8, LED_ON);
  matrix.writeDisplay();
  delay(1000);

  matrix.clear();      // clear display
  matrix.drawPixel(6, 10, LED_ON);
  matrix.writeDisplay();  // write the changes we just made to the display
  delay(1000);

  matrix.clear();
  matrix.drawLine(0,0,15,15, LED_ON);
  matrix.drawLine(0,15,15,0, LED_ON);
  matrix.writeDisplay();  // write the changes we just made to the display
  delay(1000);

  matrix.clear();
  matrix.drawRect(15,15, 0,0, LED_ON);
  matrix.fillRect(0,1, 0,0, LED_ON);
  matrix.writeDisplay();  // write the changes we just made to the display
  delay(1000);

  matrix.clear();
  matrix.drawCircle(3,3, 3, LED_ON);
  matrix.drawCircle(12,12, 3, LED_ON);
  matrix.writeDisplay();  // write the changes we just made to the display
  delay(1000);

  matrix.setTextSize(1);
  matrix.setTextWrap(false);  // we dont want text to wrap so it scrolls nicely
  matrix.setTextColor(LED_ON);
  for (int8_t x=0; x>=-64; x--) {
    matrix.clear();
    matrix.setCursor(x,0);
    matrix.print("Hello");
    matrix.writeDisplay();
    delay(50);
  }

  matrix.setTextSize(1);
  matrix.setTextWrap(false);  // we dont want text to wrap so it scrolls nicely
  matrix.setTextColor(LED_ON);
  matrix.setRotation(1);
  for (int8_t x=7; x>=-36; x--) {
    matrix.clear();
    matrix.setCursor(x,0);
    matrix.print("World");
    matrix.writeDisplay();
    delay(100);
  }
  matrix.setRotation(2);
}