RE: Build USB Interface cable
I allready sold a thousand of USB Simulator Cables worldwide. A very cheap, but perfect choice could be:
[link=http://www.hobbydirekt.de/Simulator-co/USB-Simulator-Interface::249.html]USB Sim Interface[/link]
It is working with all brands that use two pins for simulating, like JR, Hitec, Futaba, Multiplex, Walkera, Graupner, and many others as there are 6 different adapters and i also think 26$ isn“t that much for it