In this chapter, we learned how to extend the area of communication of our Arduino boards. We were used to making very local connections; we are now able to connect our board to the Internet and potentially communicate with the whole planet.
We described Wired Ethernet, Wi-Fi, Bluetooth connections, and how to use Twitters API.
We could have described the Xbee board, which uses radio frequencies, too, but I preferred to describe IP-related stuff because I consider them to be the safest way to transmit data. Of course, Xbees shield solution is a very nice one too and I used it myself in many projects.
In the next chapter, we are going to describe and dig into the Max 6 framework. This is a very powerful programming tool that can generate and parse data and we are going to explain how we can use it with Arduino.