// Define Connections to 74HC165

// PL pin 1
int load = 7;
// CE pin 15
int clockEnablePin = 4;
// Q7 pin 7
int dataIn = 5;
// CP pin 2
int clockIn = 6;

int led1 = 8;
int led2 = 9;
int led3 = 10;
int led4 = 11;

void setup()
{

  // Setup Serial Monitor
  Serial.begin(9600);

  // Setup 74HC165 connections
  pinMode(load, OUTPUT);
  pinMode(clockEnablePin, OUTPUT);
  pinMode(clockIn, OUTPUT);
  pinMode(dataIn, INPUT);

  digitalWrite(led1,1);
  delay(250);
  digitalWrite(led2,1);
  delay(250);
  digitalWrite(led1,0);
  delay(250);
  digitalWrite(led2,0);
}

void loop()
{

  // Write pulse to load pin
  digitalWrite(load, LOW);
  delayMicroseconds(5);
  digitalWrite(load, HIGH);
  delayMicroseconds(5);

  // Get data from 74HC165
  digitalWrite(clockIn, HIGH);
  digitalWrite(clockEnablePin, LOW);
  byte incoming = shiftIn(dataIn, clockIn, LSBFIRST);
  digitalWrite(clockEnablePin, HIGH);

  // Print to serial monitor
  Serial.print("Pin States:\r\n");
  Serial.println(incoming, BIN);
  // delay(20);

  if(incoming==0b11101111)
  {
    digitalWrite(led1,1);
  }
  else
  {
  digitalWrite(led1,0);
  }

}