node-red-contrib-barcode

Node-RED node for reading barcode and QR code.

Install and Run Node RED

Windows

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

node-red

Linux

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

# Or
sudo snap install node-red

node-red

The first time running node-red, it will create a folder named .node-red in your home directory.

Windows

%userprofile%\.node-red

Linux

~/.node-red

If the default port 1880 is in use, change it to 18800 in .node-red/settings.js.

Usage

Install node-red-contrib-barcode and start Node RED:

Windows

cd %userprofile%\.node-red
npm install node-red-contrib-barcode
node-red

Linux

cd ~/.node-red
npm install node-red-contrib-barcode
node-red

In web editor, add inject node, file node, barcode node and debug node. You can set the file path in file node. The file could be an image file (png, jpg, bmp, gif, tiff, pdf) or a file containing a base64 string. To output the results in the console, check the system console option in debug node.

Click barcode node to set a valid license of Dynamsoft Barcode Reader and barcode parameter template:

If the template is empty, the default template will be used.

Run the NODE RED flow and you will see the barcode results in the console:

Blog

How to Use Node RED with Barcode Module on Windows 10