The edge

We can develop our edge with different technologies and frameworks. In Chapter 10, Implementing a Cloud Industrial IoT Solution with AWS and Chapter 12, Performing a Practical Industrial IoT Solution with Azure, we will learn about AWS Edge (Greengrass) and Azure Edge. We will also develop a simple Edge MQTT with the AWS SDK, Azure SDK, and GCP SDK. To develop a simple edge to access the OPC UA server, we can use Node.js and the OPC UA client (http://node-opcua.github.io/). In this simple exercise, we are going to use a graphical interface called Node-RED.

Node-RED

Node-RED is an open source independent edge device, based on Node.js. Follow these steps:

1. Assuming Node.js is already installed, we can install Node-RED...