5/GPS, Compass, and
Battery Monitor
In this chapter, we are going to cover three accessories that we
will add to our drone. Each of these components on its own
would make a pretty small chapter, so we thought we would
cover all three in a single chapter.
GPS
One feature clearly draws the line between a drone and a model
aircraft: the ability to operate using GPS (see Figure 5-1). The
addition of this satellite navigation technology allows for a level
of control that was simply not possible before. This extra control
allowed drone designers to develop
flight modes for specific
types of flights.
Figure 5-1. 3DR uBlox GPS unit with built-in compass.
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