SpoolmanScale

Open-source ESP32-S3 filament scale with NFC — integrates with Spoolman and FilaMan. No cloud. No subscription. Just works.

🚀 Get Started ⭐ GitHub

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What is SpoolmanScale?

SpoolmanScale is a standalone, self-contained filament scale for 3D printing. Place a spool on it, tap the NFC reader, and it instantly identifies the filament, shows the remaining weight, and syncs with your filament management backend — all without opening a browser.

📡

NFC Identification

Tag your spools once. Tap to identify instantly. Supports NTAG213/215/216.

⚖️

Precision Scale

NAU7802 24-bit ADC with 5 kg load cell. Auto tare, bag weight correction, live diff to Spoolman.

🔗

Spoolman & FilaMan

Seamless two-way sync with both popular backends. Switch at any time.

📺

480×320 Touchscreen

WT32-SC01 Plus display with full LVGL UI. No computer needed — everything on-device.

🔄

OTA Updates

Update firmware over WiFi directly from GitHub releases — or via the web flasher.

🏠

Fully Local

No cloud. No account. Runs entirely on your network. Your data stays yours.

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Hardware at a Glance

Component	Part
Microcontroller	ESP32-S3 (WT32-SC01 Plus)
Display	3.5" IPS 480×320, Capacitive Touch
NFC Reader	PN532 (I²C)
Scale ADC	NAU7802 (I²C)
Load Cell	5 kg single-point
Enclosure	Custom 3D-printed (MakerWorld)

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Quick Start

New BuildExisting DeviceSpoolmanScale Pro

1. Buy the parts
2. Wire everything
3. Print the case
4. Flash the firmware
5. First setup

If you already have a SpoolmanScale, update your firmware via the OTA update page.

The Pro variant adds a Raspberry Pi Zero 2W running Spoolman or FilaMan locally. See the Pro overview.

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Community

SpoolmanScale is open-source and community-driven.

• Discord — discord.gg/GzQzGa5pBG
• GitHub — github.com/Niko11111/SpoolmanScale
• MakerWorld — 3D models @FormFollowsF
• Ko-fi — Support the project

Want to contribute?

Found a bug? Missing a feature? See Contributing or open an issue on GitHub.