Everything works locally without cloud access, you can use scripts/init_bambulab.py script to access your PRINTER_ID and PRINTER_CODE if it is not available on your printer.

What you need:

Android Phone with Chrome web browser or iPhone (manual process much more complicated)
Server to run OpenSpoolMan with https that is reachable from your Phone and can reach both SpoolMan and Bambu Lab printer on the network
Active Bambu Lab Account or PRINTER_ID and PRINTER_CODE on your printer
Bambu Lab printer https://eu.store.bambulab.com/collections/3d-printer
SpoolMan installed https://github.com/Donkie/Spoolman
NFC Tags https://eu.store.bambulab.com/en-sk/collections/nfc/products/nfc-tag-with-adhesive https://www.aliexpress.com/item/1005006332360160.html

How to setup:

Rename config.template to config.py and:
- set BASE_URL - that is the URL where OpenSpoolMan will be available on your network. Must be https for NFC write to work.
- set PRINTER_ID - On your printer clicking on Setting -> Device -> Printer SN
- set PRINTER_CODE - On your printer clicking on Setting -> Lan Only Mode -> Access Code (you don't need to enable the LAN Only Mode)
- set PRINTER_IP - On your printer clicking on Setting -> Lan Only Mode -> IP Address (you don't need to enable the LAN Only Mode)
- set SPOOLMAN_PROTO, _IP, _PORT - according to your SpoolMan installation
Run the server (wsgi.py)
Run Spool Man
Add following extra Fields to your SpoolMan:
- Filaments
  - "type","Type","Choice","Basic","Silk, Basic, High Speed, Matte, Plus, Flexible, Translucent","No"
  - "nozzle_temperature","Nozzle Temperature","Integer Range","°C","190 – 230"
- Spools
  - "tag","tag","Text"
  - "active_tray","Active Tray","Text
Add your Manufacturers, Filaments and Spools to Spool Man (when adding filament you can try "Import from External" for faster workflow)
Open the server base url in browser on your mobile phone
Optionally add Bambu Lab RFIDs to extra tag on your Bambu Spools so they will be matching. You can get the tag id from logs or from browser in AMS info.
For non Bambu Lab filaments click on the filament and click Write and hold empty NFC tag to your phone (allow NFC in popup if prompted)
Attach NFC tag to your filament
Load filament to your AMS by loading it and then putting your phone near NFC tag and allowing your phone to open the website
On the website pick the slot you put your filament in
Done

Notes:

If you change the BASE_URL of this app, you will need to reconfigure all NFC TAGS

TBD:

Filament remaining in AMS (I have only AMS lite, if you have AMS we can test together)
Filament spending based on printing
Evidently needed GUI improvements
Code cleanup
Video showcase
TODOs

README.md Unescape Escape

OpenSpoolMan

README.md