2 layers130 × 169.5 mm
Bsl array v1
jackw01/scanlight
A better light source for scanning color negative film
110 parts397CERN-OHL-W-2.0
2 layers226.1 × 73.9 mm
St40
coarse/st4019Open source 40% ortholinear keyboard PCB powered by STM32F072
- Size
- 226.1 × 73.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 110
- Nets
- 91
- Pads
- 430
- Tracks, vias
- 737, 23
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 18 Feb 2019
- Updated
- 20 Jul 2020
Overview
St40 is an open-source printed circuit board by coarse, from the coarse/st40 repository on GitHub. It is a 2-layer board of 226.1 × 73.9 mm with 110 parts on 91 nets, routed with 737 tracks and 23 vias.
Its parts include 48 diodes, 7 capacitors, 2 ICs, 2 switches and 1 resistor. It belongs with the keyboards and input boards and the STM32 boards of this library.
README
README.mdST40 PCB
No frills, open source 40% ortholinear keyboard PCB
Specs
- Planck-like layout
- South-facing LED (even though there is no backlight) because that's how switches were meant to be oriented
- No backlight, no underglow
- No fancy ESD protection
- No fancy reset circuit
- USB Mini because literally no frills
- STM32F072CBT6
Requirements
- KiCad 5.0.1
- Default KiCad Schematic Library
- ai03's Switch Footprint Library (included as submodule)
Notes
- To be used as a reference for STM32F072CBT6 only
- Can't guarantee that this PCB is compatible with Planck cases
Questions?
- Hit me up on Discord (Miyo#2210) or via e-mail (mfmayol@up.edu.ph)
License
The design is licensed under CC BY-SA 4.0.
Parts
110| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | MX-1U | MX_Alps_Hybrid:MXOnly-1U-NoLED | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +32 |
| 48 | SOD-123 | pcb-parts:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +32 |
| 5 | 100nF | pcb-parts:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2, C3, C4, C5, C7 |
| 2 | SW_SPST | pcb-parts:SW_PUSH_6mm | SW1, SW2 |
| 1 | 10uF | pcb-parts:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C6 |
| 1 | 4.7uF | pcb-parts:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1 |
| 1 | LD1117S33TR_SOT223 | pcb-parts:SOT-223 | U1 |
| 1 | MX-2U | MX_Alps_Hybrid:MXOnly-2U-ReversedStabilizers-NoLED | MX49 |
| 1 | R_Small | pcb-parts:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1 |
| 1 | STM32F072CBTx | pcb-parts:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | USB_B_Mini | pcb-parts:USB-Mini-B_ LCSC-C46398 | J1 |
Questions
How big is the St40 PCB?
It measures 226.1 × 73.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the St40 use?
110 parts. 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 St40 KiCad files?
From the coarse/st40 repository on GitHub, at the commit this page was made from: the board is st40.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the St40 design in my own project?
Its repository states no licence, so its author keeps all rights: ask coarse before reusing the design.
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