Ive added video of Bumper-Bot, the robot from Chapter 12 of The Unofficial LEGO MINDSTORMS NXT Inventors Guide, to the Pages section of the blog. You can also watch the video below.
Bumper-Bot is based on the Zippy-Bot model from Chapter 11, adding a bumper built around a single NXT touch sensor. Bumper-Bot is content to explore its surroundings by randomly running into objects and then changing its path. Fortunately, robots don’t get headaches from bumping into objects—unless they’re programmed to get headaches, of course.