This is an Elm library that displays data as an HCCB (High Capacity Color Barcode). It dynamically constructs an SVG element based on the data to display (i.e. on an HTML page).
For the project I'm pursuing, I needed a colorful barcode format that can pack a lot of data. In addition, I hoped to find a barcode that kids would find interesting. When I showed my daughter an HCCB she said "Oh, that one's pretty", so I decided the HCCB fit the bill.
In a future project, I intend to "stream" data through an on-screen HCCB--bypassing tricky usb-serial drivers and other methods of programming an Arduino in the classroom.
See Simple and Streaming examples online.
- Data is properly displayed as an HCCB [YES]
- Data is transformed using error-correcting codes [NO]
I discovered HCCB, among other formats, through Specifications For Popular 2D Bar Codes. Skimming through the various formats is quite informative.
Install Elm in your $PATH.
Compile Hccb
elm make src/Hccb.elm
Compile an example
elm make examples/Simple/Simple.elm
Then view the example in http://localhost:8000/examples/Simple/index.html with:
elm reactor
Authored by Duane Johnson
BSD3 Licensed. Feel free to do what you want with this code; however, HCCB is patented by Microsoft and I have no idea if they want you to use HCCB or not.