// רובוטרוניקס לימוד ארדואינו , לימוד רובוטיקה 
// http://www.robotronix.co.il
const int ledPin = 2; // Pin connected to the LED

void setup() {
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW); // Turn off the LED initially
}

void loop() {
  if (Serial.available() > 0) {
    String command = Serial.readStringUntil('\n');
    command.trim(); // Remove leading and trailing whitespaces

    // Process the received command
    if (command == "on") {
      digitalWrite(ledPin, HIGH); // Turn on the LED
      Serial.println("LED is ON");
    } else if (command == "off") {
      digitalWrite(ledPin, LOW); // Turn off the LED
      Serial.println("LED is OFF");
    } else {
      Serial.println("Invalid command. Available commands: 'on' and 'off'");
    }
  }
}