#include <Keypad.h>

// Pin configuration for the 3x3 button matrix
const byte rowPins[3] = {2, 3, 4}; // Rows connected to pins 2, 3, 4
const byte colPins[3] = {5, 6, 7}; // Columns connected to pins 5, 6, 7

// Define keypad layout
char keys[3][3] = {
  {'1', '2', '3'},
  {'4', '5', '6'},
  {'7', '8', '9'}
};

// Create Keypad object
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, 3, 3);

void setup() {
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  // Scan the button matrix
  char key = keypad.getKey();
  
  if (key) {
    // Send the key press to the computer
    Serial.print("Key Pressed: ");
    Serial.println(key);
    
    delay(100); // Delay for key press duration
  }
}