void setup() {
  Serial.begin(9600);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
}

void loop() {
  if (Serial.available() > 0) {
    String serial = Serial.readStringUntil('\n');

    int colonIndex = serial.indexOf(':');
    if (colonIndex != -1) {
      String label = serial.substring(0, colonIndex);
      int value = serial.substring(colonIndex + 1).toInt();

      Serial.print("Label: ");
      Serial.println(label);
      Serial.print("Value: ");
      Serial.println(value);

      if (value >= 0 && value <= 255) {
        if (label == "L1") {
          analogWrite(10, value);
        } else if (label == "L2") {
          analogWrite(11, value);
        }
      } else {
        Serial.println("Nilai tidak valid. Harus antara 0-255.");
      }
      
    } else {
      Serial.println("Format tidak valid");
    }
  }
}