gistfile1.c

const int latchPin = 8;
const int clockPin = 12;
const int dataPin = 11;

char inputString[2];
int arreglo[] = {2,4,6,8,10,12,14};
unsigned int bitsToSend = 0;    

void setup() {
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);  
  pinMode(clockPin, OUTPUT);
  Serial.begin(9600);
  Serial.println("reset");
}

void loop() {
  for(int pos = 0; pos<7; pos++){
    registerWrite(arreglo[pos]);
    delay(200);
  }
  
}

void registerWrite(int pos) {
  digitalWrite(latchPin, LOW);
  bitWrite(bitsToSend, pos, HIGH);

  byte registerOne = highByte(bitsToSend);
  byte registerTwo = lowByte(bitsToSend);

  shiftOut(dataPin, clockPin, MSBFIRST, registerTwo);
  shiftOut(dataPin, clockPin, MSBFIRST, registerOne);

  digitalWrite(latchPin, HIGH);
  delay(300);
}