// Define pin numbers
const int receiverPin = 2; // Pin for receiving input
const int emitterPin = 3;  // Pin for sending output

void setup() {
  // Initialize serial communication at 9600 bits per second
  Serial.begin(9600);

  // Set receiver pin as input and emitter pin as output
  pinMode(receiverPin, INPUT);
  pinMode(emitterPin, OUTPUT);

  // Optional: Initialize emitter pin state
  digitalWrite(emitterPin, LOW);

  Serial.println("Ready: Monitoring input and emitting signals...");
}

void loop() {
  // Read input from the receiver pin
  int receivedValue = digitalRead(receiverPin);

  // Output the received value to the emitter pin
  digitalWrite(emitterPin, receivedValue);

  // Send the received value to the Serial Monitor
  if (receivedValue == HIGH) {
    Serial.println("Received HIGH signal!");
  } else {
    Serial.println("Received LOW signal!");
  }

  // Small delay to avoid overwhelming the Serial Monitor
  delay(100);
}