int buttonPin = D1;  // Button connected to GPIO 2
int ledPin = D10;    // LED connected to GPIO 10

void setup() {
  pinMode(buttonPin, INPUT);  // Button as input (pull-down handled externally)
  pinMode(ledPin, OUTPUT);    // LED as output
}

void loop() {
  int buttonState = digitalRead(buttonPin); // Read button state

  if (buttonState == HIGH) {  // Button pressed
    digitalWrite(ledPin, HIGH); // Turn LED on
  } else {
    digitalWrite(ledPin, LOW);  // Turn LED off
  }

  delay(10); // Small debounce delay
}