2 layers330 × 300 mm
Melbourne Live Train Map
CDFER/Melbourne-Live-Train-Map
A curcuit board with RGB leds to show the live position of trains in Melbourne!
1,260 parts5GPL-3.0
2 layers76.5 × 57 mm
Buckconverter
GeoffWilliams/usb_buck_converterUSB powered buck converter 5V -> 3.3V
- Size
- 76.5 × 57 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 6
- Pads
- 40
- Tracks, vias
- 26, 4
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Oct 2024
- Updated
- 2 Aug 2026
Overview
Buckconverter is an open-source printed circuit board by GeoffWilliams, from the GeoffWilliams/usb_buck_converter repository on GitHub. It is a 2-layer board of 76.5 × 57 mm with 15 parts on 6 nets, routed with 26 tracks and 4 vias.
It is built around the LM2596S-3.3, SMSD1306-330MT and SS33. Its parts include 2 capacitors, 2 resistors, 2 connectors, 1 IC and 1 diode.
Main components
3Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 1 | 220uF | kicad_extra:CAPMP7343X430N | C2 |
| 1 | 3.3V Out | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Left | J2 |
| 1 | 5V Test | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | TP1 |
| 1 | 680uF | kicad_extra:CAP_EEEFK1J681AM | C1 |
| 1 | LM2596S-3.3 | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U1 |
| 1 | LOGO | LOGO | G*** |
| 1 | SMSD1306-330MT | kicad_extra:SMDRI127‑330MT | L1 |
| 1 | SS33 | Diode_SMD:D_SMA | D1 |
| 1 | USB-C Power | kicad_extra:USB-C-SMD_USB-TYPE-C-006 | J3 |
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Questions
How big is the Buckconverter PCB?
It measures 76.5 × 57 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Buckconverter use?
15 parts, built around the LM2596S-3.3, SMSD1306-330MT and SS33. 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 Buckconverter KiCad files?
From the GeoffWilliams/usb_buck_converter repository on GitHub, at the commit this page was made from: the board is buckconverter.kicad_pcb and its schematic buckconverter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Buckconverter design in my own project?
Its repository states no licence, so its author keeps all rights: ask GeoffWilliams before reusing the design.