#define led 21
#define buttonOn 14   // Green button
#define buttonOff 13  // Red button

bool ledState = false;

void setup() {
  Serial.begin(115200);
  pinMode(led, OUTPUT);
  pinMode(buttonOn, INPUT_PULLUP);   
  pinMode(buttonOff, INPUT_PULLUP);
}

void loop() {
  // Check green button (active LOW)
  if (digitalRead(buttonOn) == LOW) {
    digitalWrite(led, HIGH);
    if (!ledState) {
      Serial.println("LED ON");
      ledState = true;
    }
    delay(200); 
  }

  // Check red button (active LOW)
  if (digitalRead(buttonOff) == LOW) {
    digitalWrite(led, LOW);
    if (ledState) {
      Serial.println("LED OFF");
      ledState = false;
    }
    delay(200); 
  }
}