Node-RED: automation features and setup

Overview

Node-RED is based on Node.js and lets you connect nodes into a flow that receives messages, transforms them, and passes them on. It is also common in smart home, sensor, and industrial systems projects, not just in connecting office applications. It can run on a local computer, small hardware, or in the cloud. For a business system, you need to plan access management, deployment, and maintenance for community-developed nodes.

Features

• Visual flow editor for event-driven applications.
• Node.js-based runtime also suited to edge hardware.
• Library of nodes and flows developed by the community.

Business uses

• Receive and process sensor data, then send an alert when a threshold is crossed.
• Connect an event from a local device to a cloud business service.

Getting started

• Install a test environment using the instructions for your computer or device.
• Build a flow that receives a message, changes a field, and displays the result.
• Set up protected access to the editor and check how the flow resumes after a restart.

What to check

• Check the maintenance and reliability of community nodes before using them in a critical system.
• When connecting physical equipment, separate monitoring from control commands and check permissions on every path.