//Pin connected to ST_CP of 74HC595
int latchPin = 8;
//Pin connected to SH_CP of 74HC595
int clockPin = 12;
////Pin connected to DS of 74HC595
int dataPin = 11;

void setup() {
  // put your setup code here, to run once:
pinMode(latchPin, OUTPUT);
pinMode(clockPin, OUTPUT);
pinMode(dataPin, OUTPUT);


}

void loop() {
  // put your main code here, to run repeatedly:

for (int numberToDisplay = 0; numberToDisplay < 256; numberToDisplay++) {

// take the latchPin low so

// the LEDs don't change while you're sending in bits:

digitalWrite(latchPin, LOW);

// shift out the bits:

shiftOut(dataPin, clockPin, LSBFIRST, numberToDisplay);

//take the latch pin high so the LEDs will light up:

digitalWrite(latchPin, HIGH);

// pause before next value:

delay(500);

}



}