code: def _string_data(self, data):
          
          print("_string_data:")
          string_to_print = []
          for i in data[::2]:
              string_to_print.append(chr(i))
          print("".join(string_to_print))
docs: This method handles the incoming string data message from Firmata.
          The string is printed to the console
  
          :param data: Message data from Firmata
  
          :return: No return value.s