In this chapter you’ll learn how to send and receive instructions and data using various types of wireless transmission hardware. Specifically, you’ll learn how to
Send digital output signals using low-cost wireless modules
Create a simple and inexpensive wireless remote control system
Use XBee wireless data receivers and transceivers
Create a remote control temperature sensor
It’s easy to send text information in one direction using a wireless link between two Arduino-controlled systems that have inexpensive radio frequency (RF) data modules, such as the transmitter module shown in Figure 14-1. These modules are usually sold in pairs and are known as RF Link modules or kits. Good examples are ...