code: def send_command(self, command):
          
          send_message = ""
          for i in command:
              send_message += chr(i)
  
          for data in send_message:
              self.pymata.transport.write(data)
docs: This method is used to transmit a non-sysex command.
  
          :param command: Command to send to firmata includes command + data formatted by caller
  
          :return : No return value.