Appliance Hacking: Converting Existing Technology - Smart Home Automation with Linux and Raspberry Pi - page 84

Figure 2-9. The AD10 module

Figure 2-10 shows the wiring; although both types of button are featured here, only one would be used in practice.

-

Device

1 2

AD12

Mains
Live

Mains Neutral

Figure 2-10. Wiring an AD10 to a mains-powered device

The main advantage of this module over the AM12W is that the switches used are standard electrical ones and
not the (more expensive) X10 variety.

N Note All devices should be grounded accordingly, not as shown in the figures for clarity.

WiFi Control
With suitable electronics, you can connect a Raspberry Pi or Arduino to a WiFi board, and add some relays to control
external devices. However, such hacking is not always necessary as some prebuilt devices already exist, which
eliminate the need and worry of working with mains power.