Building Arduino Projects for the Internet of Things

CHAPTER 2 ■ INTERNET CONNECTIVITY

Arduino Uno Wireless Connectivity (WiFi)

In this section, you are going to attach a Wireless shield to your Arduino Uno and write

code to connect it to the Internet using WiFi.

■ Note If you are using a model of Arduino that comes with built-in wireless capabilities

such as Arduino Yún, then you do not need a separate Wireless shield. Arduino Yún Internet

connectivity setup is discussed later in this chapter.

Hardware Required

Figure  2-4 provides a list of all hardware components required for connecting Arduino

Uno to the Internet using a Wireless shield.

Figure 2-4. Hardware required for wireless Internet connectivity

Software Required

In order to write the Internet connectivity code, you will need following software:

• Arduino IDE 1.6.4 or later version

Circuit

In this section you are going to build the circuit required for Internet connectivity using WiFi.

1. Make sure your Arduino is not connected to a power source,

such as a computer via USB or a battery.

2. Attach the WiFi shield (a.k.a., wireless shield) to the top of

your Arduino. All the pins should align.