| ESP32 |
Electronics |
1 |
44,55 |
44,55 |
| MCP4725 - 12 Bits DAC I2C |
Eletronics |
1 |
23,74 |
23,74 |
| OLED display 0.96’ I2C |
Mechanics/Electronics |
1 |
25,27 |
25,27 |
| Power on/off switch |
Electronics |
1 |
0,93 |
0,93 |
| 12V rechargeable battery |
Electronics |
2 |
30,00 |
60,00 |
| Op-amp (TL081) |
Electronics |
6 |
0,92 |
5,52 |
| Resistors, capacitors, diodes and aditional components for circuit |
Electronics |
Unknown yet |
- |
60,00 |
| PCB (phenolic) |
Electronics |
1 |
70,00 |
70,00 |
| Case for microcontroller |
Mechanics |
1 |
90,00 |
90,00 |
| Electrodes of graphite |
Mechanics/Electronics |
1 |
5,20 |
5,20 |
| Nail Polish |
Mechanics/Electronics |
1 |
4,60 |
4,60 |
| Cables and conectors for the electrodes |
Mechanics/Electronics |
4 |
30,00 |
120,00 |
| Reference Electrode (Copper or Silver Wire and further materials) |
Mechanics/Electronics |
1 |
50,00 |
50,00 |
| Electrochemical cell case |
Mechanics |
1 |
20,00 |
20,00 |
| Chemicals (potassium chloride, potassium ferricyanide, copper sulfate and others) |
Mechanics |
Unknown yet |
- |
40,00 |
| AWS ec2 instance (remote server) with 4GB/2-core CPU |
Software |
200 hours |
0,35/hour |
70,00 |
| OpenAI API (for fine-tuning) |
Software |
- |
0,02/1M tokens |
~70,00 |
| Risk 1 - Electrodes |
Mechanics |
- |
100,00 |
100,00 |
| Risk 2 - Noise interference |
Electronics |
- |
30,00 |
30,00 |
| Risk 3 - Component reposition |
Electronics |
- |
30,00 |
30,00 |
| Risk 4 - Bad signal |
Electronics |
- |
30,00 |
30,00 |
| Risk 9 - Power Bank |
Electronics |
|
80,00 |
80,00 |
| Risk 10 - PCB rebuild |
Electronics |
|
70,00 |
70,00 |
| TOTAL |
|
|
|
1099,81 |