Bill of Materials (BOM)
Complete list of components needed to build Fabrica
Electronics
| Component | Qty | Specification | Est. Cost |
|---|---|---|---|
| Raspberry Pi Pico 2W | 1 | RP2040, WiFi enabled | $6-8 |
| PCA9685 PWM Driver | 1 | 16-channel, I2C interface | $5-7 |
| Servo Motors (MG90S) | 4-16 | 180°, metal gear, 1.8kg·cm | $3-4 each |
| Power Supply | 1 | 5V 5A, barrel jack | $8-12 |
| Pushbuttons | 3 | Tactile, momentary | $0.50 each |
| LED | 1 | 5mm, any color | $0.25 |
| Resistors | 4 | 220Ω (LED), 10kΩ (pullup) | $1 |
| Jumper Wires | 1 set | Male-to-female, assorted | $5-8 |
| Breadboard (optional) | 1 | 400 or 830 tie-points | $3-5 |
| Electronics Subtotal (4 servos) | ~$50-70 | ||
3D Printed Parts
Filament Required: Approximately 800g total (varies by configuration)
| Part Name | Qty | Approx. Weight | Print Time |
|---|---|---|---|
| Base Frame | 1 | 200g | 8-10 hrs |
| Motorized Panel | 4-16 | ~40g each | 2-3 hrs each |
| Follower Panel (hinged) | 0-12 | ~30g each | 1.5-2 hrs each |
| Servo Mounts | 4-16 | ~15g each | 1 hr each |
| Electronics Enclosure | 1 | 80g | 4-5 hrs |
| Cable Clips | 10 | ~3g each | 30 min each |
| Total Print Time (basic 4-panel) | ~24-30 hrs | ||
Hardware (Fasteners & Misc)
Screws & Nuts
- • M3 x 8mm screws (qty: 20)
- • M3 x 12mm screws (qty: 30)
- • M3 x 20mm screws (qty: 10)
- • M3 hex nuts (qty: 30)
- • M2.5 x 6mm screws for servo mounting (qty: 16-64)
Other Hardware
- • M3 heat-set inserts (qty: 20)
- • Hinges (small brass, qty: 4-12)
- • Foam padding strips (optional)
- • Velcro strips (optional, for cable management)
Hardware Estimated Cost: $15-25 (can source assortment kits)
Tools Required
Essential
- • Screwdriver set
- • Wire cutters
- • Wire strippers
- • Multimeter
- • Hex key set (metric)
Recommended
- • Soldering iron + solder
- • Heat gun (for inserts)
- • Helping hands tool
- • Label maker
- • Needle-nose pliers
For 3D Printing
- • 3D printer (PLA capable)
- • Slicer software
- • Deburring tool
- • Flush cutters
- • Calipers (optional)
Total Cost Estimate
Electronics:$50-70
3D Printing (filament):$15-25
Hardware (screws, hinges):$15-25
Total (4-panel DIY build):$80-120
* Prices are estimates and may vary by region and supplier. Scaling to 16 panels will increase cost to ~$150-200.