2 layers25.4 × 78.2 mm
Sd board
w0ts/optimist
Optimist: an open, modular firmware platform for the M-VAVE FM-1 (from SLOOP / Felucca)
19 parts32GPL-3.0
2 layers25.4 × 78.2 mm
Sd board
w0ts/optimist32Optimist: an open, modular firmware platform for the M-VAVE FM-1 (from SLOOP / Felucca)
- Size
- 25.4 × 78.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 22
- Pads
- 95
- Tracks, vias
- 138, 67
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 8 Oct 2026
- Updated
- 7 Nov 2026
Overview
Sd board is an open-source printed circuit board by w0ts, from the w0ts/optimist repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 25.4 × 78.2 mm with 28 parts on 22 nets, routed with 138 tracks and 67 vias.
It is built around the USBLC6-2SC6 and 74LVC1G04Z. Its parts include 8 resistors, 3 capacitors, 3 ICs and 3 connectors.
Main components
2
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
74LVC1G04Z
SOT-553-40℃~+125℃ 1 1 1.65V~5.5V 1.7V~2V 200uA 32mA 32mA 5ns@5V,50pF 700mV~800mV 74LVC SOT-553 Inverters ROHSDiodes IncorporatedInverters
README
hardware/long-both-sides/README.mdThe order readme, the boards, their zips and the order settings are in ../README.md; this folder's design detail is in DESIGN.md.
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 47k | sdboard:R0603 | R2, R3, R4, R7, R8 |
| 5 | cut to swap | sdboard:SolderJumper-2_Cut_P3.0mm_Pad1.5x2.0mm | JP1, JP2, JP3, JP4, JP5 |
| 2 | 100nF | sdboard:C0603 | C2, C3 |
| 2 | 510 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R6 |
| 2 | USBLC6-2SC6 | sdboard:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL | U2, U3 |
| 1 | 10uF | sdboard:C0805 | C1 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 600R@100MHz | sdboard:R0603 | FB1 |
| 1 | 74LVC1G04 | sdboard:SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR | U1 |
| 1 | FPC 10P 0.5mm bottom contact (IN) | sdboard:FPC-SMD_10P-P0.50_XUNPU_FPC-05F-10PH20 | J2 |
| 1 | FPC 10P 0.5mm top contact (LCD) | sdboard:FPC-SMD_10P-P0.50_XUNPU_FPC-0.5AS-10PWBH20 | J3 |
| 1 | J12 6 | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | J12 8 | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | J12 9 | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
| 1 | J12 DET | TestPoint:TestPoint_Pad_D1.5mm | TP5 |
| 1 | J12 G | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | TF-01A push-push | sdboard:TF-SMD_TF-01A | J1 |
Questions
How big is the Sd board PCB?
It measures 25.4 × 78.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sd board use?
28 parts, built around the USBLC6-2SC6 and 74LVC1G04Z. 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 Sd board KiCad files?
From the w0ts/optimist repository on GitHub, at the commit this page was made from: the board is hardware/archive-v6-tested/sd-board.kicad_pcb and its schematic hardware/archive-v6-tested/sd-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sd board design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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