Allows you to connect a standard RC receiver to your Arduino, which will then present the data as a USB joystick. This is handy for RC car and plane simulators so that you can use your own transmitter for the sim.
This is a combination of two different projects: The RCArduino blog posts and UnoJoy. You can find them at:
http://rcarduino.blogspot.co.uk/ http://code.google.com/p/unojoy/
Getting the USB part of this to work is a little more complicated than your standard Arduino setup. You should follow the UnoJoy installation guide here:
http://code.google.com/p/unojoy/wiki/GettingStarted
For the first step, simply compile and upload rc_to_usb instead of the UnoJoy sample program.