//LSBFIRST=poradie bitov
const int latch = 3;
const int clock = 2;
const int data = 4;
uint8_t pattern = 0b01010101;

void setup(){

pinMode(latch, OUTPUT);
pinMode(clock, OUTPUT);
pinMode(data, OUTPUT);

digitalWrite(latch, LOW);
shiftOut(data,clock, LSBFIRST, pattern);
digitalWrite(latch, HIGH);

}

void loop(){

}