Very cool! I'm very interested in raspberry pi hardware control. I've built a car similar to yours, you can find out more about it on my website here:<p><a href="http://jack.minardi.org/raspberry_pi/android-controlled-toy-car/" rel="nofollow">http://jack.minardi.org/raspberry_pi/android-controlled-toy-...</a><p>I am slowly building up a raspberry pi hardware control python library. My goal is to do as much as possible on the Pi without bringing an Arduino into the mix. You can check out the code on github:<p><a href="https://github.com/jminardi/RobotBrain" rel="nofollow">https://github.com/jminardi/RobotBrain</a><p>Let me know if you want to chat, I love talking with others interested in Raspi hardware control.