car-labels

A small web portal for reprinting worn or damaged car part stickers. Pick the sticker, type the numbers off the old one, and get a new one: a PNG or PDF for a DYMO LabelWriter (59 × 190 mm 99019 labels), or an A4 PDF with the stickers at their real size for sticker paper. On your own network it can also print straight to the DYMO and keep a library of saved labels for reprints.

Templates

Every label can have an optional info card: a second sticker with a logo, a title and two small lines (who tuned it, torque limit, original part numbers).

Barcodes are Code 128 of the number printed under them, which is what VAG and Aisin use. The VAG one was checked bar for bar against a real sticker; check others before you rely on a scanner reading them.

Adding a template

One JSON file in car_labels/templates/: a size in mm, the fields the user fills in, and elements (text, box, line, barcode) placed in mm with {field} placeholders. See the docstring at the top of car_labels/render.py. "wpc" (mm per character) keeps a value the length of the example exactly as wide as on the original sticker. Add a sample to the tests, run them, open a PR.

Run it

docker run -d --name car-labels -p 8710:8080 -v /path/to/data:/data louij2/car-labels

Then open http://localhost:8710. That gives you preview and downloads.

Printing to a DYMO

Run a CUPS server with the DYMO queue (for example olbat/cupsd, which ships the DYMO PPDs). Share its /run/cups with this container and name the queue:

docker run -d --name car-labels -p 8710:8080 \
  -v /path/to/data:/data -v cups-sock:/run/cups \
  -e PRINTER=DYMO_LabelWriter_450 louij2/car-labels

Printing goes over the local socket because the default CUPS policy refuses to take the document over TCP. Leave the container running as root (the default) when printing: CUPS only lets root or the job's owner send the document, and a uid like 99 has no name inside the CUPS container, so lp answers "Unauthorized". Saved files are chowned to the owner of /data.

A request carrying Cloudflare headers never counts as LAN. If you publish the portal on the internet, it's still safest to run a second container without PRINTER for that.

Unraid

Template: unraid/car-labels.xml.

Develop

pip install -r requirements.txt pytest
python -m pytest -q
flask --app car_labels.app run --port 8710

Fonts are DejaVu (fonts-dejavu-core + fonts-dejavu-extra). Set FONT_DIR if yours are somewhere else.

Licence

MIT. For repairing labels on parts you own. Don't use it to pass a part off as something it isn't.