Klipper, OpenPrintTag & Spoolman

[bofh69]

In 2024 I got fed up with selecting the right spool in Mainsail before printing. Also creating new filament configurations in the slicer felt like a waste of time. So instead of spending some minutes for every new
filament I buy and some seconds when I load a new spool, I spent days implementing nfc2klipper and spoolman2slicer... 👍

With those programs, an NFC reader on my printer and NFC tags on my spools, I only need to create new spools/filaments in Spoolman, then new filaments will show up in my slicers and the right spool is always selected in Moonraker after I load it. Pretty neat.

This worked well, but it is still a bit annoying to add a new spool in Spoolman and connect its NFC tag to the spool whenever I buy a new one.

During fall Prusa released their OpenPrintTag format and starting selling spools with it. I bought a spool and some NFC stickers from them and started to implement support for it in nfc2klipper. When the spool finally arrived I was ready to test it and it didn't work. 😞. They had chosen a different type of NFC tags, type V, that my old NFC-reader (PN532) can't read. I looked around, found out there is another common reader, PN5180, that can read them as well as (the old) NFC type 2 tags. Unfortunately there were no good python modules for using it the way that was needed.

So during the holidays I wrote a simple driver for my new reader and added it to nfc2klipper.

Now when I get a new spool, with OpenPrintTag (or OpenTag3D...), it is automatically added to Spoolman and moonraker knows it is loaded! 🎆

I've not tested it a lot so the code is not yet merged to main, but it is available here if someone else is interested.