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std::vector<BLEClient *>::iterator client = clients.begin();
  for (std::vector<BLEAddress>::iterator server = lights.begin(); server != lights.end(); ++server) {
    pServerAddress = new BLEAddress(*server);
    pActiveClient = *client;
//    timerWrite(timer, 0);
    if (connectToServer(*pServerAddress, pActiveClient)) {
      Serial.println("We are now connected to a BLE Server.");
      Serial.println("Setting new characteristic value to \"" + command + "\"");
      // Set the characteristic's value to be the array of bytes that is actually a string.
      pRemoteCharacteristic->writeValue(command.c_str(), command.length());
    } else {
      Serial.println("We have failed to connect to the server; there is nothin more we will do.");
    }
    delay(5000);
    pActiveClient->disconnect();
    ++client;
  }

bool connectToServer(BLEAddress pAddress, BLEClient *pClient) {    
    Serial.print("Forming a connection to ");
    Serial.println(pAddress.toString().c_str());
    pClient->connect(pAddress);
    Serial.println(" - Connected to server");

    // Obtain a reference to the service we are after in the remote BLE server.
    BLERemoteService* pRemoteService = pClient->getService(serviceUUID);
    if (pRemoteService == nullptr) {
      Serial.print("Failed to find our service UUID: ");
      Serial.println(serviceUUID.toString().c_str());
      return false;
    }
    Serial.println(" - Found our service");


    // Obtain a reference to the characteristic in the service of the remote BLE server.
    pRemoteCharacteristic = pRemoteService->getCharacteristic(charUUID);
    if (pRemoteCharacteristic == nullptr) {
      Serial.print("Failed to find our characteristic UUID: ");
      Serial.println(charUUID.toString().c_str());
      return false;
    }
    Serial.println(" - Found our characteristic");

    // Read the value of the characteristic.
    std::string value = pRemoteCharacteristic->readValue();
    Serial.print("The characteristic value was: ");
    Serial.println(value.c_str());

    pRemoteCharacteristic->registerForNotify(notifyCallback);
}