Getting started with Node-RED

The LEGO Principle

Article from Issue 277/2023

Node-RED lets you connect ready-made code building blocks to create event-driven applications with little or no code writing.

Imagine you come home and the blinds come down in the living room, subtle lighting turns on, Alexa says hello, and the coffee maker prepares a cup of coffee. You can arrange all this magic at the push of a button without staying up all night writing code thanks to the low-code Node-RED platform [1].

With Node-RED, a few elements control the flow. Each element represents a whole block of instructions that would require a large number of lines of code in conventional programming (Figure 1).

Figure 1: This Node-RED flow controls a sequence of events to welcome you home at the end of the day.


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