int data_pin = 8;
int clock_pin = 10;
int latch_pin = 9;

bool patten[8][8] = {
  {1,0,0,0,0,0,0,0},
  {0,1,0,0,0,0,0,0},
  {0,0,1,0,0,0,0,0},
  {0,0,0,1,0,0,0,0},
  {0,0,0,0,1,0,0,0},
  {0,0,0,0,0,1,0,0},
  {0,0,0,0,0,0,1,0},
  {0,0,0,0,0,0,0,1}
};

void print_patten(bool pat[8][8]){
  for (int i=0;i<8;i++){

    for (int x=0;x<8;x++){
      if ((7-x)==i){
        sift(0);
      }
      else{
        sift(1);
      }
    }

    for (int d=7;d>-1;d--){
      sift(pat[i][d]);
    }

    latch();
    delay(1000);
  }
}

void sift(bool d){
  if (d){
    digitalWrite(data_pin,HIGH);
    digitalWrite(data_pin,HIGH);
    digitalWrite(data_pin,LOW);
    digitalWrite(data_pin,LOW);
  }
  else{
    digitalWrite(data_pin,LOW);
    digitalWrite(data_pin,HIGH);
    digitalWrite(data_pin,LOW);
    digitalWrite(data_pin,LOW);
  }
}

void latch(){
  digitalWrite(latch_pin, HIGH);
  digitalWrite(latch_pin, LOW);
}

void setup(){
  pinMode(data_pin, OUTPUT);
  pinMode(clock_pin, OUTPUT);
  pinMode(latch_pin, OUTPUT);
}

void loop(){
  print_patten(patten);
}