uint8_t pattern = 0;
#define dataPin 2
#define latchPin 3
#define clockPin 4
int i=0;
bool smer = true;

void setup() {
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  Serial.begin(9600);
  Serial.println(i);
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST ,pattern++);
  digitalWrite(latchPin, HIGH);
  
}

void ledky(){
  float posun;
  if(pattern==0b10000000){
    posun=0.5;
  }
  else if(pattern==0b00000001){
    posun=2;
  }
  pattern*=posun;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(200);
}
void loop() {
  i=(i+1)%8;
  pattern = pattern << 1;
  ledky();

}