The simplest is to use two wireless modems: one that is connected to the AX2550's serial port and the other connected to a PC, laptop or single board microcomputer. It will be necessary to write a program on the computer side that converts commands received from a joystick to RS232 commands that will be sent to the controller via the wireless modem. Depending on the brand and type, wireless modems have a longer range than R/C radio, can send very precise commands, and are able to read back sensor and diagnostic information from the controller.