//MAX7219 - using Led Control library to light all LEDs one by one
#include <LedControl.h>

int DIN = 11; //this pin is DataIn
int CS = 7; //this is the LOAD pin
int CLK = 13; //this is the CLOCK pin

LedControl eightByEight = LedControl(DIN, CLK, CS,0);

void setup()   {
  eightByEight.shutdown(0,false);
  eightByEight.setIntensity(0,0);
  eightByEight.clearDisplay(0);
}

//i is row number, j is column number (0-7)
void loop() {
  for(int j=0;j<8;j++){
     for(int i=0;i<8;i++){
       eightByEight.setLed(0,i,j,true);
       delay(100);
       eightByEight.setLed(0,i,j,false);
     }
  }
}