#include <LedControl.h>

#define CS_PIN  9
#define CLK_PIN 10
#define DIN_PIN 8

#define MAX_SEG 1

LedControl matrix = LedControl (DIN_PIN, CLK_PIN, CS_PIN, MAX_SEG); // MAX7219

void setup ()
{
  matrix.shutdown(0, false);
  matrix.setIntensity(0, 7);
  matrix.clearDisplay(0);
}

byte row = 7;
byte column = 0;

void loop ()
{
  int i=0;
 for(row =0;row<=7;i++){
    
    matrix.setLed (0, row, column, true); // on LED
    
    delay (500);
    matrix.setLed (0, row, column, false); // off LED
    row=row+1;
   
    delay (500);
  }
}