As I mentioned before, we will be using a Bluetooth module to communicate with the Arduino. The specific model is the HC-06 module, which is one of the cheapest Arduino communications modules and is widely used. We could just try to hook it up to our smart phone and send an alert directly to it, but what if you aren't at home? That is a drawback of using Bluetooth.

But fret not. We will capitalize on what we can do using just the Bluetooth. I think this is a good time to explain the plan before diving into the details.

The following is a representation of what we are going to achieve in this part of the chapter.

We use the PIR sensor to check if there is any motion detected. This data is transmitted through the HC-06 Bluetooth module to a host computer through a Bluetooth channel. A script (program) running on the computer takes a snapshot of the culprit using the wireless IP camera's URL and saves it as an image. It then uploads the image to an image-sharing website and...