[6600gt]

I am working on application that allows you to simulate all four joysticks(2 at any given time) through the program port on the RC. You need to connect the OI to run but thats all. Yes, there will be some interrupt and code overhead but unless you are pushing the processor to the limit it should work for most things. It also has other features. I am concentrating on the DataView and Camera right now but I will work on the Joystick if you require.

The pic and other hardware way is quite possible but also quite messy. PIC, D/A converter, MAX232, code and more code...
Do you know how to access the serial port on the PC using Java?

I have a pic of what it looks like: