#include <LedControl.h>

// LedControl(DataIn, Clock, ChipSelect, nCascades);
LedControl lc=LedControl(10,12,11,1);
 
void setup() {
  lc.shutdown(0,false);
  lc.setIntensity(0,8); // 0 ~ 15
  lc.clearDisplay(0);
}

int i = 0, j = 0;
void loop() { 
  lc.setLed( 0, i, j, true );
  j++;
  if ( j >= 8 ) {
    j = 0;
    i++;
    if ( i >= 8 ) {
      lc.clearDisplay(0);
      i = 0;
    }
  }
  delay(200);
}