Practical Internet of Things with JavaScript

Technology overview

Now that we know what IoT is, we can start defining the technology stack. In this book, we will build a generic framework using JavaScript for developing IoT applications.

We will follow the approach of cloud computing, where we have a bunch of devices that are connected to the cloud, compared to a fog computing approach, where there is a gateway that can do almost all the things a cloud can but is locally available in the on-premises.

Our smart devices will be powered by Raspberry Pi 3, which has the ability to talk to the cloud over Wi-Fi and also, using its GPIO pins, talk to the sensors and actuators. Using this simple piece of hardware, we will connect sensors and actuators and build some real-world solutions in this ...