Chapter 15
Great Projects You Can Build in 30 Minutes or Less
In This Chapter
Creating unique light blinkers and flashers
Putting the squeeze on with piezoelectricity
Seeing like a cat with an infrared sensor
Rigging a couple of alarms
Finding your way with your very own portable electronic compass
Sounding off with your own amplifier
Bringing the presence of water to light
Getting up to speed on electronics really pays off when you get to the point where you can actually build a project or two. In this chapter, you get to play with several fun, entertaining, and educational electronics gadgets that you can build in half an hour or less. We selected the projects for their high cool factor and their simplicity. We’ve kept parts to a minimum, and the most expensive project costs under ...