Now that you have a neat row of car batteries all charged up and ready to use, it’s time to use them to improve your standard of living (see Figure 3-1). First, you’ll learn how to connect those batteries to something useful, and then in this chapter’s first project, you’ll build a simple lighting circuit.
The second project in this chapter will show you how to use an Arduino microcontroller board and a few extra components to make a simple battery monitor. You wouldn’t want to lose your brains just because your defenses’ batteries died!
Figure 3-1: Car batteries have a variety of uses in the postapocalyptic world.