2 layers35.3 × 17.3 mm
Tiny Solar Supply
futureshocked/KLP4e_Tiny-Solar-Supply
This is the repository for the "Tiny Solar Supply" project.
18 parts3MIT
2 layers41.3 × 17.8 mm
Tiny Solar Supply
grkmtrk/Tiny-Solar-SupplyThis project is a compact solar power supply module, originally inspired by and based on the design featured in Elektor Magazine.
- Size
- 41.3 × 17.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 8
- Pads
- 36
- Tracks, vias
- 106, 9
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 12 Oct 2026
- Updated
- 12 Oct 2026
Overview
Tiny Solar Supply is an open-source printed circuit board by grkmtrk, from the grkmtrk/Tiny-Solar-Supply repository on GitHub. It is a 2-layer board of 41.3 × 17.8 mm with 16 parts on 8 nets, routed with 106 tracks and 9 vias.
It is built around the AP3015AKTR-G1. Its parts include 4 resistors, 4 connectors, 3 capacitors, 2 diodes and 1 IC. It belongs with the power boards of this library.
Main components
1README
README.mdTiny Solar Supply ☀️🔋
This project is a compact solar power supply module, originally inspired by and based on the design featured in Elektor Magazine. It is designed to harvest solar energy efficiently for low-power embedded systems, sensor nodes, and IoT devices.
📷 Board Preview
✨ Features
- Solar Energy Harvesting: Optimized for small solar panels to provide stable continuous power.
- Power Management: Integrated circuitry for safe voltage regulation and energy storage charging.
- Low Quiescent Current: Designed to minimize power loss during operation.
- Compact Footprint: Minimalist PCB design suitable for space-constrained DIY projects.
📂 Repository Structure
/Gerber- Manufacturing files (Gerbers and Drill files) ready for production.tiny solar supply.pdf- High-resolution schematic file.tiny solar supply.kicad_pro- KiCad 8.0 project workspace.
🛠️ Built With
- KiCad - Open-source PCB design software.
🏭 Manufacturing
The fabrication files are located in the Gerber directory. You can directly compress this folder into a .zip file and upload it to your preferred PCB manufacturer (such as JLCPCB or PCBWay).
Board Specifications:
- Layers: 2
- Copper Thickness: 1 oz
- Board Thickness: 1.6 mm
📚 Acknowledgements
- Original circuit design and concept by Elektor Magazine (Project 62009).
📄 License
This project is open-source and available under the MIT License.
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | conn-1x2 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J1, J2, J4 |
| 2 | 1 MΩ | Resistor_SMD:R_0805_2012Metric | R1, R4 |
| 2 | SS14 (DO-214AC) | Diode_SMD:D_SMA | D1, D2 |
| 1 | 10 kΩ | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 10 pF, 50 V, X7R (0805) | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 10 µH, 680 mA | ASPI-0630LR-100M-T15:IND_ASPI-0630LR_ABR | L1 |
| 1 | 22 µF, 10 V, X7R (1206) | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 2N7002 (SOT-23) | digikey-footprints:SOT-23-3 | Q1 |
| 1 | 4.7 µF, 50 V, X7R (0805) | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 604 kΩ, 1% | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | AP3015AKTR-G1 | AP3015AKTR-G1:SOT23-5_1P55X2P9_DIO | U1 |
| 1 | conn-1x2 | Button_Switch_THT:SW_DIP_SPSTx01_Slide_6.7x4.1mm_W7.62mm_P2.54mm_LowProfile | J3 |
Questions
How big is the Tiny Solar Supply PCB?
It measures 41.3 × 17.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tiny Solar Supply use?
16 parts, built around the AP3015AKTR-G1. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Tiny Solar Supply KiCad files?
From the grkmtrk/Tiny-Solar-Supply repository on GitHub, at the commit this page was made from: the board is tiny solar supply.kicad_pcb and its schematic tiny solar supply.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tiny Solar Supply design in my own project?
Its repository states no licence, so its author keeps all rights: ask grkmtrk before reusing the design.
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