landg16 / custom-printer

Custom printer vkp80iii library on nodejs

Custom printer library on nodejs

Custom printer library written on serialport and canvas libraries. Tested only with VKP-80III and K-80 models. K-80 is missing a lot's of features of VKP-80III.

1. Pre-installation

1) Install canvas pre-dependencies for using image printing on your printer

OS	Command
OS X	Using Homebrew: brew install pkg-config cairo pango libpng jpeg giflib librsvg
Ubuntu	sudo apt-get install build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev
Fedora	sudo yum install gcc-c++ cairo-devel pango-devel libjpeg-turbo-devel giflib-devel
Solaris	pkgin install cairo pango pkg-config xproto renderproto kbproto xextproto
OpenBSD	doas pkg_add cairo pango png jpeg giflib
Windows	See the wiki
Others	See the wiki

Mac OS X v10.11+: If you have recently updated to Mac OS X v10.11+ and are experiencing trouble when compiling, run the following command: xcode-select --install. Read more about the problem on Stack Overflow. If you have xcode 10.0 or higher installed, in order to build from source you need NPM 6.4.1 or higher

2.) Run npm install

npm install

3.) Setup configuration file

Configure config file, also there is example config file, which you can copy and edit.

Type has only two argument: vkp80iii or k80. If portConfiguration is null, only commands will be printed on console.

{
    "type": "vkp80iii",
    "portConfiguration": {
        "port": "/dev/ttyUSB0",
        "baudRate": 115200
    }
}

2. Usage

npm run test

and it will print test print on your ESC-POS custom printer :) have fun.

Pull requests are welcome :)

custom-printer's Issues

Command codes for QR-Code "version" and "dot size" may be reversed

I am currently implementing the VKP80III driver in .NET and noticed, that the command codes for settings the QR code version and the QR code dot size seem to be wrong in the VKP Commands Manual.

Specify QRcode barcode version

1D 28 6B pL pH 31 42 n

Specify dot size of the module of the QRcode barcode

1D 28 6B pL pH 31 43 n

You implemented it according to the manual:

Custom-Printer/command-list.js

Line 372 in afdd110

this.write(Buffer.from([0x1D, 0x28, 0x6B, 0x03, 0x00, 0x31, 0x42, 0x0A])) // Set QRCode Version

However, for my VKP80III printer, 0x42 sets the dot size and 0x43 specifies the version. So either my printer firmware is buggy, or the documentation is wrong.