Now that your robot is mobile and has several ways of sensing the outside world, you'll want to disconnect it from the tether cable that you have been using to communicate with it. In this chapter, you'll learn how to communicate wirelessly with your robot. Depending on your choice of method, you'll be able to communicate across the room or across a distance of up to a mile. Specifically, we'll cover the following topics:

As your Arduino will now be remote, you'll need to power it with an external source. Your Arduino will need at least 250 mA, but you might want to consider providing 500 mA to 1 A based on your project. To supply this from a battery, you can use one of several...