Tiny solar supply
mhered·KiCAD_udemy_course·projects/03_tiny_solar_supply/tiny_solar_supply.kicad_pcb
About the Tiny solar supply PCB
Tiny solar supply is an open source PCB design by mhered, published on GitHub. It is a 2-layer board measuring 36.8 × 20.8 mm, with 16 components from 12 distinct parts.
Other key parts include the AP3015A. By type, the board carries 4 resistors, 3 connectors, 3 capacitors, 2 diodes, 1 IC and 1 switch.
It belongs with the power & battery designs in this gallery.
From the project
My notes on the course "PCB design with KiCAD - updated for KiCAD 9" by Dr Peter Dalmaris in Udemy
Inspired by this Elektor article (see PDF version) and its companion Elektor Lab, from where attachments can be downloaded:
BOM: 220321-solar-supply-bom-v1.0.xlsx gerbers: 220321-1-v1.0-gerber.zip * kicad files: 220321-solar-supply-v1.0-kicad5.zip
R2 = 604 kΩ, 1% >> Note: take care of high precision
C1 = 4.7 µF, 50 V, X7R (0805) >> X7R is general purpose ceramic capacitor

Main components on the Tiny solar supply
Tiny solar supply bill of materials (BOM)
16 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP3015A | SOT95P280X145-5N | U1 |
| 3 | Conn_01x02 | 1x02 | J1, J2, J4 |
| 1 | OS102011MS2QN1 | SW_OS102011MS2QN1 | S1 |
| 1 | 2N7002 | SOT-23 | T1 |
| 2 | SS14 | SMA | D1, D2 |
| 1 | 10µH >800 mA | IND_ASPI-0630LR_ABR | L1 |
| 1 | 4.7µF 50V | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | 22µF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2 |
| 1 | 10pF 50V | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3 |
| 2 | 1MΩ | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R4 |
| 1 | 604kΩ 1% | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2 |
| 1 | 10kΩ | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3 |
Tiny solar supply design files
The KiCad project lives in the mhered/KiCAD_udemy_course repository on GitHub; these links point at the commit this page was built from.
Tiny solar supply: common questions
How big is the Tiny solar supply PCB?
The Tiny solar supply measures 36.8 × 20.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Tiny solar supply?
16 components, from 12 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Tiny solar supply design files?
From the mhered/KiCAD_udemy_course repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Tiny solar supply design in my own project?
The repository has no license, so all rights stay with mhered. Use it as a reference, and ask the author before reusing the design.
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