Node-RED's goal is to enable anyone to build applications that collect, transform and visualize their data; building flows that can automate their world. Its low-code nature makes it accessible to users of any background, whether for home automation, industrial control systems or …

Pick where you want to run Node-RED, whether on your local computer, a device such as a Raspberry Pi or in the cloud and follow the guides below. Running locally. Installing Node-RED on your local computer Raspberry Pi. Get started using our all …

The definitive guide to using Node-RED. Frequently Asked Questions. And hopefully some answers. Tutorials. Examples of what you can do, taken one step at a time. Cookbook. Recipes to help you get things done with Node-RED. Developing Flows. Best practices for …

You must keep the terminal open in order to keep Node-RED running. Note that running Node-RED will create a new folder in your %HOMEPATH% folder called .node-red. This is your userDir folder, think of it as the home folder for Node-RED configuration for the current user. You will often see this referred to as ~/.node-red in documentation.

Node-RED started life in early 2013 as a side-project by Nick O’Leary and Dave Conway-Jones of IBM’s Emerging Technology Services group. What began as a proof-of-concept for visualising and manipulating mappings between MQTT topics, quickly became a much more general tool for building light-weight, event-driven applications. ...

Node-RED uses flows_<hostname>.json as the default flows file. If the computer you are running on may change its hostname, then you should ensure you provide a static file name; either as a command-line argument or using the flowsFile option in your settings file.

Configuring Node-RED; Command-line Admin; Advanced. Embedding into an existing app; Other places to get help. If you have a question, suggestion or just want to say hello, there are various places you can do so: Join the Node-RED Forum; Join us on Slack; Subscribe to the blog; Follow us on: Mastodon: @[email protected]; Twitter: @nodered

docker run - run this container, initially building locally if necessary -it - attach a terminal session so we can see what is going on -p 1880:1880 - connect local port 1880 to the exposed internal port 1880 -v node_red_data:/data - mount a docker named volume called `node_red_data` to the container /data directory so any changes made to flows are persisted --name mynodered - …

This tutorial introduces the Node-RED editor and creates a flow the demonstrates the Inject, Debug and Function nodes. Your second flow This tutorial builds on the first tutorial to make a flow that starts to bring in data from external sources to do something useful locally.

Running locally. As with running Node-RED locally, you can use the node-red command to run Node-RED in a terminal. It can then be stopped by pressing Ctrl-C or by closing the terminal window.. Due to the limited memory of the Raspberry Pi, you will need to start Node-RED with an additional argument to tell the underlying Node.js process to free up unused memory sooner than it would otherwise.