const int DATA = 10;  // Green Wire
const int LATCH = 11; // Orange Wire
const int CLOCK = 12; // Yellow Wire

void setup() {
  // put your setup code here, to run once:
  pinMode(DATA, OUTPUT);
  pinMode(LATCH, OUTPUT);
  pinMode(CLOCK, OUTPUT);
  digitalWrite(CLOCK, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  updateShiftRegister(0b11111110);
  delay(500);
  updateShiftRegister(0x01);
  delay(500);
}

// Writes one byte of data into shift register and sets pins
void updateShiftRegister(byte bitData) {
  digitalWrite(LATCH, LOW);
  shiftOut(DATA, CLOCK, MSBFIRST, bitData);
  digitalWrite(LATCH, HIGH);
}