OpenHaystack-based Lost and Found Tag
 |
|
 |
 |
| Reference | Quantity | Description |
|---|---|---|
| U1 | 1 | E104-BT5005A module |
| C1, C2 | 2 | C0603 10pF |
| Y1 | 1 | 3215 32.768Mhz Crystal |
| PCB | 1 | Custom PCB |
| Battery | 2 | CR2032/CR2025/CR2016 with solder tabs |
With the help of the XTAL, the power consumption is around 6.27uA.
| Battery type | Typical Capacity | Estimated life |
|---|---|---|
| 2xCR2032 | 2x220mAh | ~8 years |
| 2xCR2025 | 2x150mAh | ~5.4 years |
| 2xCR2016 | 2x75mAh | ~2.7 years |