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reComputer-R1000 Getting Started with Node Red

Introduction​

Node-RED is a versatile programming tool designed to connect hardware devices, APIs, and online services seamlessly. Its browser-based flow editor simplifies the process of wiring together different components using a variety of nodes from the palette. With a lightweight runtime built on Node.js, it efficiently utilizes the Raspberry Pi and other low-cost hardware, making it perfect for edge network applications.

Getting Start​

Before you start this project, you may need to prepare your hardware and software in advance as described here.

Hardware Preparation​

reComputer R1000
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Software Preparation​

reComputer-R1000 comes to your hand pre installed raspberry pi OS. If you are booting this device first time please read our Getting Started Wiki

Install Node Red on reComputer-R1000​

  • Step 01: SSH to reComputer-R1000 Please open PowerShell if you using windows or open Terminal APP if you are using program and then type ssh {USERNAME}@{RECOMPUTER_IP_ADDRESS}. As example 
ssh [email protected]

Then please enter the password for the {USER} of the Operating System you have setup on your reComputer.

  • Step 02: Install Node-RED

The Node-RED team has prepared us with a All-IN-ONE script, which you could just enter the following command into the reComputer native Terminal APP (via VNC viewer) or in the SSH Shell from the step above.

bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)

At the end of the installation, there will be a couple of questions asked by the prompt, and you need to answer them.

  • Step 03: Setup Node-Red After the installation with the All-IN-ONE script is complete, you can use follow commands accordingly:

Use node-red-start to start Node-RED
Use node-red-stop to stop Node-RED
Use node-red-start to start Node-RED again
Use node-red-log to view the recent log output
Use sudo systemctl enable nodered.service to autostart Node-RED at every boot
Use sudo systemctl disable nodered.service to disable autostart on boot

  • Step 04: Access Node-RED editor

Now please open your favorite Web Browser and enter the url described as below:

  • Option 1: Use http://127.0.0.1:1880, if the web browser is running locally on your reComputer via VNC.

  • Option 2: Use http://{reComputer_IP_ADDRESS}:1880, if the web browser is running remotely on a host computer, please replace the {reComputer_IP_ADDRESS} with the ip address of reComputer.

Getting familiar with Node-RED​

Now you should see the similar result as the image below:

Node-RED editor Overview​

  • Node Panel: The area where users can browse and select nodes from a palette to add to their flows.
  • Flow Editor: The workspace where users visually connect nodes together to create their flows.
  • Config Panel: The section where users can configure the properties and settings of selected nodes.
  • Settings Button: Allows users to access and adjust various settings and preferences for the Node-RED editor.
  • Deploy Button: Enables users to deploy their flows to the Node-RED runtime, making them active and operational.

Install Nodes​

There are a couple of options: one is using command lines, and the next one is using the Node-RED editor. Here, I will explain the simplest method, which is using the Node-RED editor.

  • Step 1: Click the Settings button with three dash icon located at the right corner and then select the Manage palette

  • Step 2: At the palette tab click Install tab

  • Step 3: Search for the node in the node search bar and Click install button to install

  • Step 4: click on Install button from the dropdown warning window to confirm install

  • Step 5: Wait for the installation to complete and you should see the install button changed to installed.

  • Step 6: you should see the installed nodes in the side bar.

Tech Support & Product Discussion​

Thank you for choosing our products! We are here to provide you with different support to ensure that your experience with our products is as smooth as possible. We offer several communication channels to cater to different preferences and needs.

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