74HC595 Test

int latchPin = 8;
int clkPin = 12;
int dataPin = 11;

byte LED = 0;

void setup()
{
  Serial.begin(9600);
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
  pinMode(clkPin, OUTPUT);
}

void loop()
{
  for(int i=0; i<24; i++) {
    digitalWrite(latchPin, LOW);

    digitalWrite(dataPin, HIGH);
    digitalWrite(clkPin, HIGH);
    delayMicroseconds(10);
    digitalWrite(clkPin, LOW);
    digitalWrite(latchPin, HIGH);

    delay(2);
  }
  for(int i=0; i<24; i++) {
     digitalWrite(latchPin, LOW);

     digitalWrite(dataPin, LOW);
     digitalWrite(clkPin, HIGH);
     delayMicroseconds(10);
    digitalWrite(clkPin, LOW);
     digitalWrite(latchPin, HIGH);
     delay(2);
  }

}