Solar Energy Harvester
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133 Download (623.26 kB)
Donate to support Open HardwareThis board implements the schematic shown on page 1 of the LTC3105 datasheet:
https://www.analog.com/media/en/technical-documentation/data-sheets/3105fb.pdf
The header pins are positioned so as to plug easily into a 2.54mm pitch breadboard. The photovoltaic cell and battery are attached externally using the header pins.
The LTC3105 is a step-up voltage converter with a low start-up voltage of 250mv. It includes Maximum Power Point Control (MPPC), which Linear Technologies advertises as being useful in solar applications.
| Qty | Value | Device | Package | Parts | Description | MF | MPN | Aliexpress or Ebay link |
|---|---|---|---|---|---|---|---|---|
| 1 | LTC3105 | U1 | ||||||
| 1 | 10uF | capacitor | SMD 0603 | C1 | ||||
| 1 | 1uF | capacitor | SMD 0603 | C2 | ||||
| 1 | 4.7uF | capacitor | SMD 0603 | C3 | ||||
| 1 | 10uF | capacitor | SMD 0603 | C4 | ||||
| 1 | 10uH | inductor | up to 6x6mm SMD Inductor with low DCR | L1 | See spec sheet for recommended units | |||
| 1 | 40.2K | resistor | SMD 0603 | R1 | ||||
| 1 | 1020K | resistor | SMD 0603 | R2 | ||||
| 1 | 332K | resistor | SMD 0603 | R3 |
| Name | Size | # Downloads |
|---|---|---|
| BoardOutline.gbr | 288 B | 642 |
| Bottom.gbr | 2.74 kB | 684 |
| BottomAssy.gbr | 189 B | 624 |
| BottomDimension.gbr | 199 B | 606 |
| BottomMask.gbr | 394 B | 664 |
| BottomPaste.gbr | 189 B | 677 |
| BottomSilk.gbr | 14.24 kB | 664 |
| Through.drl | 292 B | 660 |
| Top.gbr | 2.79 kB | 627 |
| TopAssy.gbr | 186 B | 699 |
| TopDimension.gbr | 196 B | 685 |
| TopMask.gbr | 970 B | 690 |
| TopPaste.gbr | 765 B | 675 |
| TopSilk.gbr | 10.58 kB | 661 |
| Revision | Created | Layers | Dimensions |
|---|---|---|---|
| rev1 | 8 years ago | 2 | 27 × 18 |