Back on the road again

I'll be back on the road again soon... I'm heading to South Africa for work on Monday, out to a place called Kathu. I'll be there for a month, and internet access is very limited, verging on non-existent, I'm told. I'll be taking my electronics gear with me, so I have something to play around with to keep me entertained outside of work. I've gotten the system to the point where I can press a key on the keyboard and the remote control car will move... but I need to rewire it, it isn't working predictably.