mbp1

// required libraries
#include <Wire.h>
#include "Adafruit_LEDBackpack.h"
#include "Adafruit_GFX.h"

// define matrix object
Adafruit_8x8matrix matrix = Adafruit_8x8matrix();

void setup() 
{
  // start the matrix at I2C address - default is 0x70
  matrix.begin(0x70);  // pass in the address
}