Table 2.
Bill of materials for the light sensing device.
| Designator | Component | Number | Unit Cost ($) | Total Cost ($) | Source |
|---|---|---|---|---|---|
| Microcontroller | Adafruit Feather 32u4 Adalogger | 1 | $21.95 | $21.95 | adafruit.com |
| μSD Card | SanDisk 8 GB microSD High Capacity Card (Class 4) – 8 GB | 1 | $6.20 | $6.20 | amazon.com |
| UV Sensor | Analog UV Light Sensor Breakout – GUVA-S12SD | 1 | $6.50 | $6.50 | adafruit.com |
| Color Sensor | RGB Color Sensor with IR filter – TCS34725 | 1 | $7.95 | $7.95 | adafruit.com |
| Battery | Lithium Ion Polymer Battery – 3.7v 350 mAh | 1 | $6.95 | $6.95 | adafruit.com |
| Switch | Breadboard-friendly SPDT Slide Switch | 1 | $0.95 | $0.95 | adafruit.com |
| Housing | ABS Plastic 3D-Printed Box and Lid | 1.68 in3 | $10/in3 | $16.80 | 3D Printer |
| Total Cost | $67.30 |