Node-RED is a Visual Programming Environment, based on NodeJS, that can be used to develop flows, to integrate for example an MQTT broker, and to easily manage, transform messages coming from devices. Perfect for IoT.
The nice thing about NodeRED is that it has a small memory footprint (it is based on NodeJS) and therefore it runs perfectly on a RPI 3 with only 1 GB of memory. The kind of device that you can adopt for a local gateway.
On this subject, for example, OpenHAB, that is Java based, takes much more memory.
Recently I have discovered that there are some modules for NodeRED that you can easily add and they give you the ability to develop flows with a resulting User Interface (UI).
The widgets that you can employ are the one that you see in one of my previous blog’s post: Gauge, Charts.
Is it difficult to develop some flows, starting from MQTT messages, displaying readings from sensors on a responsive and nice UI? No, a matter of hours.
Here you see a snapshot of the flows I have developed:
And here you see one tab of the resulting UI:
Readings (temperature, humidity, luminosity, air quality, gas) are coming from: Arduino MKR1000, Intel Edison, Fishino, connected through a WIFI network.
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