So far in this book you’ve focused on ground-based robots, such as rollers and tanks. Let’s mix things up by introducing waterborne robots! On some levels, these robots are just like tankbots—they have a power supply, motors, and a microcontroller. They do, however, have unique limitations and needs. For instance, they have to float! Even a robot meant to submerge needs to have a way of getting back home. Another requirement is that they have the capability to protect their sensitive electronics against moisture damage.
In this chapter, you’ll learn about these realities and will put them to the test when you build a fun robot: the Floating Fanbot, pictured in Figure 11.1.