Hello!
Here, I document the logistics that went into building our project!
For Collaborators
Full Logistics list
| Item | Link | Quantity | Justification | Price ($) |
|---|---|---|---|---|
| Set up | ||||
| Stannol Solder | Provided in lab | 1 | Self-soldering at home when small modifications needed | 0 |
| 10L box for Misc | Shopee link | 1 | To carry around project, want to bring home frequently | 6.89 |
| Circuitry | ||||
| Wires | Provided in Lab | infinite | - | 0 |
| Breadboards | Provided in Lab | infinite | - | 0 |
| Insulator tape | Provided in Lab | 1 x red, 1 x black | - | 0 |
| Heat shrink tubing | Provided in Lab | Good, clean and permanent insulation | 0 | |
| Adafruit Feather nRF52840 Sense + LiPo battery | Adafruit link | 3, in case 1 breaks 3 also | Low powered microcontroller made for wearables | 39.50 x 3 5.95 x 3 |
| Conductive rubber sheet - Adafruit | Adafruit link | 3 | Resistance increases when stretched (measure breathing) | 5.50 x 3 |
| MAX30102 | Shopee link | 2 x of selected | To measure SpO2 and heart rate Please advise on which to get | 2.29 x 2 |
| LD1117V33 Linear Voltage Regulator LD1117 3.3V 800mA TO-220 | Shopee link | 5 | To regulate voltage to 3.3V to protect boards | 2.50 x 5 |
| Latching Micro button switch | Shopee Link | 50 | To toggle on and off the device | 6.54 x 1 |
| Wired Miniature Electret Microphone | Adafruit Link | 2 | To record body internals | 1.21 x 2 |
| Electret Microphone Amplifier - MAX4466 with Adjustable Gain | Adafruit Link | 2 | To amplify Electret Microphone signals | 8.89 x 2 |
| Housing / ergonomics | ||||
| Selleys silicone sealant | Shopee Link | 1 | To ensure tight seal between microphone and stethoscope | 6.90 |
| Others / Application | ||||
| Littmann Stethoscope Classic lll | Shopee Link | 1 | To make a “Digital” stethoscope | 67.47 |
| Total: | ||||
| Budget: | 300 |