2 layers
BMS
narimonjonmurodov/PCB-design
A compact solar harvesting power supply designed to provide a stable 3.3V output from variable sunlight.
52 parts
2 layers39.5 × 17.3 mm
A compact solar harvesting power supply designed to provide a stable 3.3V output from variable sunlight.
- Size
- 39.5 × 17.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 8
- Pads
- 36
- Tracks, vias
- 73, 7
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Jul 2026
- Updated
- 8 Jul 2026
Overview
Task2 is an open-source printed circuit board by narimonjonmurodov, from the narimonjonmurodov/PCB-design repository on GitHub. It is a 2-layer board of 39.5 × 17.3 mm with 16 parts on 8 nets, routed with 73 tracks and 7 vias.
It is built around the AP3015AKTR-G1 and SS14. Its parts include 4 resistors, 4 switches, 3 capacitors, 2 diodes and 1 IC.
Main components
2README
README.mdAstable Multivibrator PCB Design Link
Description
This project contains the schematic and 3D PCB design of a two-transistor astable multivibrator created in KiCad. The circuit alternately blinks two LEDs using two BC237 NPN transistors, RC timing components, and a CR2032 battery.
Features
- Designed in KiCad
- Complete schematic
- 3D PCB model
- Two alternating LEDs
- Powered by a 3V CR2032 battery
Components
- 2 × BC237 (NPN) Transistors
- 2 × LEDs
- 2 × 100 Ω Resistors
- 2 × 10 kΩ Resistors
- 2 × 100 µF Capacitors
- 1 × Push Button Switch
- 1 × CR2032 Battery Holder
Tiny Solar Supply (3.3V) Link
A compact solar harvesting power supply designed to provide a stable 3.3V output from variable sunlight.
Overview
This project is a custom PCB designed in KiCad for low-power embedded applications. It efficiently harvests energy from solar sources and regulates it to a consistent 3.3V.
Project Contents
- Hardware Design: KiCad project files for the PCB.
- BOM: Bill of Materials (Excel file) included in the repository. Link
- Documentation: Schematics and design files are available for review.
Software
- KiCad
Author
Narimonjon Murodov
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1M | Resistor_SMD:R_0805_2012Metric | R1, R4 |
| 2 | SS14 | Diode_SMD:D_SMA | D1, D2 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 10p | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 10uH | Inductor_SMD:L_2010_5025Metric_Pad1.52x2.65mm_HandSolder | L1 |
| 1 | 22u | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | T1 |
| 1 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 604K | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | AP3015AKTR-G1 | AP3015AKTR-G1:SOT95P280X145-5N | IC1 |
| 1 | BAT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | K2 |
| 1 | ON/OFF | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | K3 |
| 1 | OUT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | K1 |
| 1 | SOLAR | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | K4 |
Questions
How big is the Task2 PCB?
It measures 39.5 × 17.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Task2 use?
16 parts, built around the AP3015AKTR-G1 and SS14. 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 Task2 KiCad files?
From the narimonjonmurodov/PCB-design repository on GitHub, at the commit this page was made from: the board is Task2/Task2.kicad_pcb and its schematic Task1/Task1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Task2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask narimonjonmurodov before reusing the design.
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