JunkBot & XBox-RC Code Update:
Finally cleaned up the code for my JunkBot and XBox-controller based transmitter. I mainly went through and organized variables into arrays and loops as well as trying to simplify things where possible. The compiled controller code is 1KB smaller, and JunkBot code is about 4KB smaller than the last posted version. There are no real functional additons, but many improvements. Technically the JunkBot code should work with any Arduino-based RC unit that uses two motors for movement and a VirtualWire capable receiver.
The JunkBot is a small radio-controlled device made out of spare parts, and the main controller is an XBox controller with an Arduino Nano embedded inside, with an RF transmitter module attached. Details of both devices are in previous posts.