In this book you’ve learned about seemingly every kind of drone imaginable, but there are still more types to discover! In this chapter, you build the waterborne drone, a floating robot with soda-bottle pontoons, which is shown in Figure 11.1. Before you get to the project, however, you’ll need to understand the advantages and disadvantages of building water-based drones. You’ll also learn about two important topics: how to waterproof your electronics, and how to set up an XBee mesh network, which is another way to control a drone. You’ll use this know-how to build a remotely controlled boat steered by a cool little handheld controller you’ll assemble yourself.