Hardware Overview¶

SpoolmanScale uses off-the-shelf modules combined with a custom 3D-printed enclosure.

Components¶

WT32-SC01 Plus — the brain: ESP32-S3 + display
PN532 NFC Reader — NFC read/write
NAU7802 Load Cell ADC — precision scale
3D Printed Case — enclosure (MakerWorld)

Block Diagram¶

┌───────────────────────────────────────────┐
│           WT32-SC01 Plus                  │
│                                           │
│  ESP32-S3 ───── 480×320 Touchscreen       │
│      │                                    │
│      │ I²C (GPIO12/13)                    │
│      ├─────────────── PN532 NFC Reader    │
│      └─────────────── NAU7802 ADC         │
│                            │              │
│                        Load Cell (5 kg)   │
└───────────────────────────────────────────┘