int load = A0;             // PL pin 1 of both registers
int clockEnablePin = A1;   // CE pin 15 of both register
int dataIn = A3;           // Q7 pin 9 of the second 74HC165, Pin 9 of first register goes to pin 10 of 2nd
int clockIn = A2;          // CP pin 2 of both

byte inputData[2] = {B00000000, B00000000}; // Array to store the incoming data

void setup()
{
  // Setup Serial Monitor
  Serial.begin(9600);

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

void loop()
{
  // Load parallel data into the shift registers
  digitalWrite(load, LOW);
  delayMicroseconds(10);
  digitalWrite(load, HIGH);
  delayMicroseconds(10);

  // Enable the clock and read the data into the array
  digitalWrite(clockEnablePin, LOW);
  //digitalWrite(clockIn, HIGH);
 // digitalWrite(clockIn, LOW);
  inputData[0] = shiftIn(dataIn, clockIn, LSBFIRST); // Read 8 bits from the first shift register
  inputData[1] = shiftIn(dataIn, clockIn, LSBFIRST); // Read 8 bits from the second shift register
  digitalWrite(clockEnablePin, HIGH);

  // Print the data with all 8 bits
  // Serial.println("Shift Register States:");
  Serial.print("Register 1: ");
  printBinary8(inputData[0]); // Print the first register's data as 8-bit binary
  Serial.print("\t");
  Serial.print("Register 2: ");
  printBinary8(inputData[1]); // Print the second register's data as 8-bit binary
  Serial.println();
  delay(1000); // Delay for readability
}

// Function to print a byte as 8-bit binary
void printBinary8(byte value)
{
  for (int i = 7; i >= 0; i--) {
    Serial.print((value >> i) & 1); // Print each bit
  }
  //Serial.println(); // Newline for the next print
}