Self-hosted · Filament & electronics · NFC + QR

Every spool.
Always up to date.

Muurhaakje is a self-hosted inventory for your whole workshop. Track every filament spool — linked to your Bambu Lab printer so the remaining weight stays current — and every electronics part, each in its own labelled, scannable bin.

your shelf at a glance

From spool to live inventory

Three steps. No spreadsheets, no guessing how much filament is left.

1 · Build your inventory

Add the spools you own by hand, or read their NFC tag right off the spool with your phone — brand, material, color and weight fill in automatically.

2 · Connect your Bambu printer

Sign in with your Bambu account and Muurhaakje links to your printer through the cloud — no IP address, works from anywhere.

3 · Stays up to date

Live AMS sync keeps the remaining weight of every loaded spool current as you print, so your shelf always matches reality.

Built around your filament shelf

Filament inventory

Track brand, material, color and remaining weight of every spool in your own MariaDB — self-hosted, your data stays yours.

Scan spools with your phone

Show a QR code, open it on your phone and tap the spool — NFC data lands straight in your inventory, no app needed.

OpenPrintTag ready

Reads Prusa's open NFC standard (and OpenSpool JSON tags): material, color, weight and diameter are filled in automatically.

Genuine Bambu spools

Bambu's encrypted tags can't be read in a browser — the Muurhaakje NFC Android app decodes them on-device and saves them to your account.

Live AMS sync

Link your printer over the Bambu cloud and watch each loaded spool's remaining weight update by itself while you print.

Multi-user accounts

Invite others to your instance — everyone gets their own inventory and their own printer link, kept neatly separate.

Electronics & CNC inventories

More than filament — track your electronics & CNC tools

Boards, sensors and modules, or end mills, drill bits and collets — give every part a home, a scannable label and a photo, so you never dig through an unmarked drawer again. Each inventory works on its own; no printer required.

A label for every bin

Each part gets a unique code with a printable QR or DataMatrix label — stick it on the bin or drawer and scan it to pull the item up in a second.

Scan to find & restock

Scan a label or tap an NFC tag with the Android app to see the part, its photo and details, then raise or lower the quantity on the spot.

Photos, categories & locations

Give every item a photo, a category and a shelf location, so you always know what it is and exactly where it lives.

Export the whole list

Download your inventory — complete with photos and scannable codes — as a nicely styled Excel sheet, Word document or PDF.

Always know what's in your workshop

Add your spools, label your parts bins and link your printer — your inventory keeps itself current.