// Button-controlled LED for Arduino Uno


const int buttonPin = 2; // Connect a push button to pin 2
const int ledPin = 13;

int buttonState = 0;
int lastButtonState = 0;

void setup() {
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
buttonState=digitalRead(buttonPin);

if (buttonState != lastButtonState){
  if (buttonState == HIGH){
       // Toggle the LED state when the button is pressed
      digitalWrite(ledPin, !digitalRead(ledPin)); 
    }
    delay(20); // Debouncing delay
  }

  lastButtonState = buttonState;
}