Bill of Materials¶
Beta build guide
If something is unclear or doesn't fit your hardware batch, please report it on Discord or MakerWorld.
Core Components¶
| Image | Component | Model | Link |
|---|---|---|---|
 |
MCU + Display | WT32-SC01 Plus (ESP32-S3, 480×320, ST7796) | AliExpress |
 |
Debug Board (not necessary) | ZXACC-ESPDB | AliExpress |
 |
NFC Reader | PN532 | AliExpress |
 |
Scale ADC | NAU7802 (Adafruit recommended) | AliExpress |
 |
Load Cell | YZC-133 2 kg beam cell (5 kg works too) | AliExpress |
 |
USB-C Panel Mount 90° | 30 cm, Left/Right Angled, full USB-C PD + data | AliExpress |
 |
Connector Cables | STEMMA QT / JST cables | AliExpress |
 |
Connector Cables (easier assembly) | Micro JST 1.0 SH 5-pin | Amazon |
2 kg vs 5 kg load cell
The 2 kg cell is recommended — most filament spools are well within range. A 5 kg cell works too but may be slightly less precise at low weights.
Additional Materials¶
- Thin stranded wire in 5 different colors (black, red, yellow, white, green — ~30–40 cm each)
- 2× M5×25 socket head screws
- 2× M4×15 socket head screws
- 9× M2.5×5 self-tapping screws
- 2–4× M2×4.4 self-tapping screws (example)
Self-tapping screws are recommended, but standard machine screws (M2.5×5, M2×4) will likely work as well.
3D Printed Enclosure¶
Download from MakerWorld:
👉 makerworld.com/@FormFollowsF
All parts fit on 3 print plates (currently distributed across 4). TPU is recommended for the feet — they grip better. Otherwise self-adhesive silicone feet work just as well.
Budget Estimate¶
| Item | Approx. cost |
|---|---|
| WT32-SC01 Plus | ~€35 |
| PN532, NAU7802, Load Cell, Cables | ~€15–25 |
| Screws, wire | ~€5 |
| Total | ~€50–60 |
Shipping time
Most parts ship from China. Expect 6–15 days delivery depending on your location and shipping option.
Next Step¶
➡️ Wiring