#define latchpin 4
#define datapin 3
#define clockpin 5

int pattern[]={0b01010101, 0b10101010};
int ledPattern[8]={
  0b10000000,
  0b11000000,
  0b11100000,
  0b11110000,
  0b11111000,
  0b11111100,
  0b11111110,
  0b11111111 
};

void setup() {
  pinMode(latchpin, OUTPUT);
  pinMode(datapin, OUTPUT);
  pinMode(clockpin, OUTPUT);
}

void loop() {
  //striedanie();
  vzor();
}

void striedanie() {
  digitalWrite(latchpin, LOW);
  shiftOut(datapin, clockpin, LSBFIRST, pattern[0]);
  digitalWrite(latchpin, HIGH);
  delay(500);

  digitalWrite(latchpin, LOW);
  shiftOut(datapin, clockpin, LSBFIRST, pattern[1]);
  digitalWrite(latchpin, HIGH);
  delay(500);
}
void vzor() {
  for (int i = 0; i < 8; i++) {
    digitalWrite(latchpin, LOW);
    shiftOut(datapin, clockpin, LSBFIRST, ledPattern[i]);
    digitalWrite(latchpin, HIGH);
    delay(300); 
  }
}