2 layers247.7 × 97.7 mm
Woagboard
hackclub/OnBoard
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104 parts915
2 layers254.8 × 83.3 mm
Ortho
EncryptSine/40-MOS2Ortholinear 40% Keyboard with custom PCB, sandwich
- Size
- 254.8 × 83.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 104
- Nets
- 75
- Pads
- 372
- Tracks, vias
- 373, 13
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Aug 2025
- Updated
- 23 Aug 2025
Overview
Ortho is an open-source printed circuit board by EncryptSine, from the EncryptSine/40-MOS repository on GitHub. It is a 2-layer board of 254.8 × 83.3 mm with 104 parts on 75 nets, routed with 373 tracks and 13 vias.
Its parts include 48 diodes, 48 switches and 1 IC. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
README
README.md40-MOS (40-MathylleinOrtholinearSlider)
📐 Layout
- Ortholinear 4x12 grid
- Extra right-side slider potentiometer
- Pro Micro (USB-C) placed top-right under the slider
💻 Firmware
- Base firmware: QMK
- Configurable with VIA or Vial
- Potentiometer support included in firmware (mapped as analog input) (soon just give me the time to add it)
🖨️ Case Options
- Sandwich case (DXF / SVG files included)
- 3D printed case (not tested) (STL files included)
🚀 Getting Started
- Flash QMK firmware to your Pro Micro (USB-C).
- Assemble PCB with switches, diodes, and potentiometer.
- Mount in sandwich or 3D printed case.
- Configure keymap in VIA/Vial or recompile with QMK.
🔌 Pro Micro Pinout (Matrix)
| Row / Col | Pin |
|---|---|
| Row 0 | D0 |
| Row 1 | D1 |
| Row 2 | D2 |
| Row 3 | D3 |
| Col 0 | D4 |
| Col 1 | C6 |
| Col 2 | D7 |
| Col 3 | E6 |
| Col 4 | B4 |
| Col 5 | B5 |
| Col 6 | B6 |
| Col 7 | B2 |
| Col 8 | B3 |
| Col 9 | B1 |
| Col 10 | F7 |
| Col 11 | F6 |
(Pro Micro USB-C top-right under the slider)
📸 Gallery
🔮 Future Updates / Ideas
- 💡 Backlight LEDs under switches
- 🔔 Layer indicator LEDs (different colors per layer)
- 🔄 Hot-swap sockets (instead of soldering switches directly)
- 📏 SMD components (instead of THT for a cleaner build)
- ✨ Edge/sandwich LEDs between plates for an underglow effect
- 🎛️ Extra potentiometers or rotary encoders for more controls
🙏 Special Thanks
- MiPSR → inspiration, guidance, and shared knowledge :3
Parts
104| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | Diode | ScottoKeebs_Components:Diode_DO-35 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +32 |
| 48 | Keyswitch | ScottoKeebs_MX:MX_PCB_1.00u | S1, S2, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20, S21, S22, S23 +32 |
| 6 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4, H5, H6 |
| 1 | Arduino_Pro_Micro | ScottoKeebs_MCU:Arduino_Pro_Micro | U1 |
| 1 | R_Potentiometer_Dual | slider:B10K | RV2 |
Questions
How big is the Ortho PCB?
It measures 254.8 × 83.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ortho use?
104 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 Ortho KiCad files?
From the EncryptSine/40-MOS repository on GitHub, at the commit this page was made from: the board is schematics/ortho.kicad_pcb and its schematic schematics/ortho.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ortho design in my own project?
Its repository states no licence, so its author keeps all rights: ask EncryptSine before reusing the design.
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