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.


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