const unsigned int LEDANZAHL  = 6;
const unsigned int STATES     = LEDANZAHL;

// Periodendauer des Blinker
// 1,5 Hz ± 0,5 Hz
const unsigned int MILLISECONDS = 1500;

// Zeit für alle LEDs aus (1/3 der Periodendauer)
const unsigned int TBLACK = MILLISECONDS / 3;

// Takt für LED-Zustandsänderungen
const unsigned int TIME = (MILLISECONDS*2/3)/(2*LEDANZAHL);

//                                  0 1 2  3  4  5      Index
const uint8_t led_pin[LEDANZAHL] = {5,7,8,10,11,12}; // Vektor, Array

byte bitSetLSb(uint8_t i) {
  return i>0 ? 0 : 1<<(i-1);
}

const byte led_row[STATES] = {
  0b000001,
  0b000011,
  0b000111,
  0b001111,
  0b011111,
  0b111111,
//  0b011111,
//  0b001111,
//  0b000111,
//  0b000011,
//  0b000001,
};

void setup() {
  // put your setup code here, to run once:
    for( int k = 0; k<LEDANZAHL; k++ ) {
      pinMode(led_pin[k], OUTPUT);
    }
}

void showLedRow( byte row ) {
  for( int k = 0; k<LEDANZAHL; k++ ) {
    digitalWrite(led_pin[k], bitRead(row,k));
  }
}

void loop() {
  for( int i = 0; i<STATES; i++ ) {
    showLedRow(led_row[i]);
    delay(TIME);
  }
  showLedRow(0);
  delay(TBLACK);
}