What is a wireless interface

We already got to know a lot of different communication interfaces that are commonly used to connect parts of your robot to the Arduino that controls it. These are interfaces such as SPI, I2C, and Serial. All of these have one thing in common, and that is that they transmit data over wires. Therefore, they all fall under the category of wired interfaces. In contrast, the interfaces that we will talk about in this chapter transmit data without the need for physical wires – they are wireless.

When to use wireless interfaces

Not requiring physical wires is an obvious advantage over wired interfaces, as it allows for a lot more flexibility and versatility when it comes to making ad hoc connections with new devices or transmitting data over longer distances. Naturally, you might wonder why we even bother with wired interfaces in the first place. To answer this question, let us look at some of the disadvantages that wireless interfaces have compared...