If you’re like most people interested in this area, you’ve been reading through the early chapters thinking, “but what about wireless?” Perhaps you’re so eager that you just skipped straight to this chapter. If you did, go back and read the rest of the book! In particular, if you’re not familiar with serial communication between computers and microcontrollers, you’ll want to read Chapter 2 before reading this chapter. This chapter explains the basics of wireless communication between objects. In it, you’ll learn about two types of wireless communication, and then build some working examples.