// Define the pins for LED and push button
const int ledPin = A4; // Analog pin for LED
const int buttonPin = 3; // Digital pin for push button

// Initialize LED state
bool ledState = LOW;

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP); // Use internal pull-up resistor
}

void loop() {
  // Read button state
  bool buttonPressed = digitalRead(buttonPin) == LOW;

  // Toggle LED based on button press
  if (buttonPressed) {
    ledState = !ledState;
    analogWrite(ledPin, ledState ? 255 : 0); // Turn LED on or off
  }
}