2 layers47.6 × 27.3 mm
2 layers89.6 × 60.1 mm
CoryDora
balub/CoryDora47A simple QMK compatible 3x3 macropad.
- Size
- 89.6 × 60.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 32
- Pads
- 137
- Tracks, vias
- 150, 9
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 7 Mar 2024
- Updated
- 8 Oct 2026
Overview
CoryDora is an open-source printed circuit board by balub, from the balub/CoryDora repository on GitHub. It is a 2-layer board of 89.6 × 60.1 mm with 27 parts on 32 nets, routed with 150 tracks and 9 vias.
Its parts include 10 switches, 9 diodes, 1 IC and 1 connector. It belongs with the keyboards and input boards and the RP2040 boards of this library.
README
README.mdCoryDora
A simple open-source, RP2040-based, QMK-compatible 3x3 mechanical macropad.
Rationale
The main goal of this project is to have a cheap, easy-to-build, feature-rich numpad which is completely open source.
You can now buy the CoryDora yourself at the Absurd Store. Onboarding instructions are available here. Full build guide is available here.
Features:
- Easy to source and build components.
- Hot swappable keys.
- QMK compatible.
- OLED 0.91" screen.
- At least 1 rotary encoder
- Completely open-source.
Parts list
| Part | Quantity | Link to buy online |
|---|---|---|
| Hotswap Sockets | 9 | https://stackskb.com/store/ttc-pokayoke-hotswap-sockets-v2-10000-cycles |
| Through hole 1N4148 Diode | 9 | https://stackskb.com/store/1n4148-through-hole-diode |
| RP2040 zero | 1 | https://robu.in/product/waveshare-rp2040-zero-without-header |
| Rotary Encoders | 1 | https://robu.in/product/m274-360-degree-rotary-encoder-module-brick-sensor/ |
| 0.91 inch I2C OLED display | 1 | https://robu.in/product/0-91-inch-128x32-i2c-iic-serial-oled-lcd-display-modulewith-gn |
| Mx compatible mechanical switches | 9 | https://stackskb.com/product-category/switches/linear/ |
Firmware
Clone forked QMK repositories and set up the build environment. See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.
License
Original CoryDora hardware designs and accompanying documentation are licensed under CERN-OHL-S-2.0. You may use, modify, manufacture, and sell the hardware under its terms. Retain the project attribution and other applicable notices; provide the complete editable sources under the same licence when required for distributed derivatives.
See licensing scope and third-party exclusions and the complete licence text. Third-party material retains its existing licences. The separate QMK firmware fork retains its applicable upstream and file-specific licences.
Attribution: CoryDora project and its contributors. Source location: https://github.com/balub/CoryDora.
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | Diode | ScottoKeebs_Components:Diode_DO-35 | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 9 | Keyswitch | ScottoKeebs_Hotswap:Hotswap_MX_Plated_1.00u | S1, S2, S3, S4, S5, S6, S7, S8, S9 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 1 | LOGO | Downloads:12 | G*** |
| 1 | LOGO | DEKU_logo:DEKU_logo | G*** |
| 1 | OLED_128x32 | ScottoKeebs_Components:OLED_128x32 | J1 |
| 1 | RP2040_Zero | ScottoKeebs_MCU:RP2040_Zero | U1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
Questions
How big is the CoryDora PCB?
It measures 89.6 × 60.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CoryDora use?
27 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 CoryDora KiCad files?
From the balub/CoryDora repository on GitHub, at the commit this page was made from: the board is CoryDora.kicad_pcb and its schematic CoryDora.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CoryDora design in my own project?
Its repository states no licence, so its author keeps all rights: ask balub before reusing the design.
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