int buttonPin = 5; // Pin connected to pushbutton
int ledPin = 2; // Pin connected to LED
bool buttonPressed = false;  // Flag to indicate if the button has been pressed
bool lastButtonState = HIGH;  // Previous state of the button
unsigned long lastDebounceTime = 0;  // Time the button state last changed
unsigned long debounceDelay = 50;  // Debounce time (50 milliseconds)


void setup() 
{
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT); // Set LED pin as output
  pinMode(buttonPin, INPUT_PULLUP); // Set pushbutton pin as input
}

void loop() {

  int buttonState = digitalRead(buttonPin); // Read input from pin 5

  // Check if the button state has changed
  if (buttonState != lastButtonState) {
    lastDebounceTime = millis();  // Reset the debouncing timer
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    // If the button state has been stable for the debounce delay
    if (buttonState == LOW && !buttonPressed) {
      // Button has been pressed
      digitalWrite(ledPin, HIGH); // Turn on LED
      Serial.println("Button pressed!");
      buttonPressed = true;
    } else if (buttonState == HIGH) {
      // Button has been released
      buttonPressed = false;
    }
  }
  lastButtonState = buttonState;  // Update the last button state
}