dymon

Command line tools for DYMO LabelWriter USB. !Windows operation hasn't been tested! This is a stripped down verion of the project dymon by minlux https://github.com/minlux/dymon/tree/master.

This project implements dymon_pbm which allows printing of labels from command line.

Intro

To automate the calibration process and put a QR code with a link to the calibration results on the device.

Implementation

Most of the application code relates to the creation of the bitmap (text and barcode). The actual code to interface with the LabelWriter can be found in the files in folder dymon and in src/print.cpp.

Notes

• Dymon is an abstact class. There is a specialization for Windows and one for Linux.
• To change the oriantation of the label, the bitmap must be rotated. The bitmap class in this project demostrates this.
• To get an idea how to change the label size/format have a look into src/print.cpp. There is an implementation for two different label formats with different orientation.

How to build

Build process is based on CMake.

1. Create a build directory (e.g. mkdir build)
2. Within the build directory execute cmake ..
3. Within the build directory execute make

Usage

dymon_pbm

dymon_pbm is a command line tool, that allows to print pbm P4 image files. on the LabelWriter. The tool expects the following arguments:

• 1st argument:
  • the path to the USB LabelWriter (like usb:/dev/usb/lp on linux, or usb:vid_0922 on windows)
• 2nd argument: full path to the bitmap file

In folder doc you can find some example files that can be printed (on the respective lables) like this:

./dymon_pbm "usb:/dev/usb/lp0"   ../doc/label_25x25.pbm

You can use GIMP to convert regular image files into pbm files. Therefore just export your image as filename.pbm and store it as raw pbm. You can also use Imagemagick to convert a file into pbm. For example:

convert your_pic.jpg your_pic.pbm

You can also do more advanced conversion at once using Imagemagick's convert. The following command resizes an image but keeps the aspect ration. It will be resized so that the width is maximal 960 pixel, the height is maximal 392 pixel. It depends on the geometry of the input image which rule applies. Then it extends the canvas to 960x392 and aligns the image centered in the canvas. Then the image is rotated by 90 degrees (counter clockwise). Finally it is converted to pbm p4. The resulting image would fit to a 36mm x 89mm label.

convert -resize 960x392 -extent 960x392 -gravity center -rotate 90 eagle.jpg eagle_36x89.pbm

Same for a 25mm x 25mm label:

convert -resize 272x252 -extent 272x252 -gravity center logo.svg logo.pbm

See also

Commands and Status Labels

https://developers.dymo.com/#/article/1417