#include <Arduino.h>
#include <ShiftRegister74HC595.h>
// https://github.com/Simsso/ShiftRegister74HC595

const int dataPin = 5;   /* DS */
const int clockPin = 19; /* SHCP */
const int latchPin = 18; /* STCP */

ShiftRegister74HC595<16> sr(dataPin, clockPin, latchPin);
void setup()
{
}

void loop () {
  for ( int x =0 ;x < 127 ; x ++ ){
     sr.set(x, HIGH);
     delay (100);
}
  for ( int x =127 ;x >0; x --){
     sr.set(x, LOW);
     delay (100);
}
}