int LED = 23;
int BOTON = 2;
int val = 0;
int lastState = 0;  
int ledState = 0;   

void setup() {
  pinMode(LED, OUTPUT);
  pinMode(BOTON, INPUT);
  digitalWrite(LED, LOW);
}

void loop() {
  val = digitalRead(BOTON); 

  
  if (val == HIGH && lastState == LOW) {
    ledState = !ledState;  
    digitalWrite(LED, ledState); 
    delay(200); 
  }

  lastState = val; 
}