In Chapter 6, you build this circuit to drive the parabolic microphone that
picks up sounds at a distance. Be careful with this circuit when placing the
wires so that they don’t get too close and cause feedback.Chapter 11 is where you go to create this little bubble cart that
you control with infrared light. This is just like controlling your
TV, only you get to watch this guy dart around the room and go
backward, which is way more entertaining than most TV shows.009683 ci_f.qxd 6/1/06 3:58 PM Page 6