NodeJS USB-Barcode Scanner Library

A JavaScript library for using USB barcode scanners in NodeJS applications.js.

Version Information

• 1.0.6 - Removed unnecessary console.logs
• 1.0.5 - Introduced version checking.
• 1.0.4 - Fixed bugs preventing the use of the getDevices function. This version also returns sting as all lowercase characters.

Intallation

You can install this package by running the following command:

npm i hid-barcode-scanner --save

Usage NodeJS

You can list all devices using the following code:

let getDevices = require('hid-barcode-scanner').getDevices;
console.log(getDevices());

Or search for a specific device using the following:

 let getDeviceByPath = require('./usb-barcode-scanner').getDeviceByPath;
 console.log(getDeviceByPath('/dev/hidraw0'));

let getDevicesByIds = require('./usb-barcode-scanner').getDevices;
console.log(getDevicesByIds(1529,8721));

Depending on the method used, a devices will show up as an array of objects or a single object in the following format:

 {
    vendorId: 1529,
    productId: 8721,
    path: '/dev/hidraw0',
    serialNumber: 'S/N E22A03870',
    manufacturer: 'Datalogic ADC, Inc.',
    product: 'Handheld Barcode Scanner',
    release: 131,
    interface: 0,
    usagePage: 1,
    usage: 6
  }

General usage is as follows:

 let UsbScanner = require('hid-barcode-scanner').UsbScanner;
 let scanner = new UsbScanner({
      vendorId: 1529,
      productId: 8721
 });
 scanner.events.on('data', (data) => {
      console.log(data);
 });
 scanner.events.on('error', (error) => {
      console.log(error);
 });
 scanner.startScanning();

To stop scanning, you can use:

scanner.stopScanning();