README.md

Node-RED Barcode Detection Module

This Node-RED module integrates the Dynamsoft Barcode Reader SDK, enabling barcode reading capabilities within your Node-RED flows.

Prerequisites

• Install Node.js

• Install Node-RED

  npm install -g --unsafe-perm node-red
  node-red

  When you run node-red for the first time, a folder named .node-red will be created in your home directory:

  • Windows: %userprofile%\.node-red
  • Linux: ~/.node-red

  If the default port 1880 is occupied, modify it in .node-red/settings.js to use a different port, such as 18800.

• Obtain a Dynamsoft Barcode Reader Trial License

Getting Started

1. Download the project and install the Node-RED Barcode module into your .node-red folder:

   cd %userprofile%\.node-red # Windows
   cd ~/.node-red # Linux
   npm install <path-to-node-red-barcode-module>

2. Launch Node-RED:

   node-red

3. In the Node-RED web editor, add the following nodes:

   • Inject Node
   • File Node
   • Barcode Node
   • Debug Node

   Configure the File Node to specify the path of the file you wish to read. The file can be an image (PNG, JPG, BMP, GIF, TIFF, PDF) or a file containing a base64 string. To display results in the console, enable the system console option in the Debug Node.

   

4. Click on the Barcode Node to set your license key and customize the barcode parameter template:

   

   Note: If the parameter template is left empty, the default settings will be applied.

5. Execute the Node-RED flow to see the barcode results displayed in the console:

   

Blog

How to Use Node RED with Barcode Module on Windows 10