2 layers182.2 × 116.6 mm
2 layers203.7 × 103 mm
Pur offset space-55
1000eyed/pur17A 38-key low profile orthogonal keyboard with an offset space bar row.
- Size
- 203.7 × 103 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 84
- Nets
- 65
- Pads
- 244
- Tracks, vias
- 289, 4
- Pours
- 267
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 8 Oct 2023
- Updated
- 12 Oct 2023
Overview
Pur offset space-55 is an open-source printed circuit board by 1000eyed, from the 1000eyed/pur repository on GitHub, published under the MIT licence. It is a 2-layer board of 203.7 × 103 mm with 84 parts on 65 nets, routed with 289 tracks and 4 vias.
Its parts include 39 diodes, 2 switches and 1 IC. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
README
README.mdPUR
A 38-key low profile orthogonal keyboard with an offset space bar row.
About
This keyboard reinterprets the beautiful design of an offset space row offered by weteor https://github.com/weteor/SPC_EVDR. I wanted to build something similar in appearance, but in lower height. Here are the main highlights of PUR:
- designed around Gateron KS27/KS33 low profile switches.
- rotary encoder support.
- bluetooth and USB connection.
- nice!view display.
- nice!nano MCU.
- ZMK keyboard firmware support.
- open source.
How to build one
I provide all the production files you will need in order to assemble the keyboard. In prod folder you will find the PCB gerbers, STLs for 3D printed case and a drawing for metal sheet case (or, should one say, a frame). In the build instructions you will find a detailed list parts needed as well as a suggested assembly order.
Firmware
PUR utilizes ZMK keyboard firmware. You can find my personal ZMK config here. Go to worklows and download the firmare from the latest successful run. Instructions on how to flash your nice!nano are here.
Open source
In source directory you will find the source files for the PCB and the cases. You may use them however you like, I kindly ask you though to link back to my project, should you build it or update something. I strongly encourage the latter, as there is a handful of design pitfalls.
Gallery
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 39 | 1N4148 | Kicad footprints:D_SOD-123 invisible designator | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +23 |
| 36 | MX_SW_solder | Kicad footprints:gateron-ks27 | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +20 |
| 2 | MX_SW_solder | Kicad footprints:gateron-ks27-1.75u | MX36, MX37 |
| 1 | Battery_Cell | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BT1 |
| 1 | LOGO | pur-offset-space-55:moon | G*** |
| 1 | LOGO | pur-offset-space-55:milkyway | G*** |
| 1 | RotaryEncoder_Switch | PCM_marbastlib-various:ROT_Alps_EC11E-Switch | SW1 |
| 1 | SW_DIP_x01 | Kicad footprints:MSK-12C02 | SW2 |
| 1 | nice!view | Kicad footprints:nice_view | Display1 |
| 1 | nice_nano | PCM_marbastlib-xp-promicroish:nice_nano_AH_USBup | U1 |
Questions
How big is the Pur offset space-55 PCB?
It measures 203.7 × 103 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pur offset space-55 use?
84 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 Pur offset space-55 KiCad files?
From the 1000eyed/pur repository on GitHub, at the commit this page was made from: the board is source/pur-pcb/pur-offset-space-55.kicad_pcb and its schematic source/pur-pcb/pur-offset-space-55.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pur offset space-55 design in my own project?
Its repository publishes it under the MIT 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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