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2 layers325.2 × 131.1 mmKopesh, the printed circuit board in 3D

weird sword keyboard

Size
325.2 × 131.1 mm
Copper layers
2
Thickness
1.6 mm
Parts
114
Nets
77
Pads
587
Tracks, vias
1,260, 53
Pours
1
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
22 Mar 2020
Updated
13 Oct 2020

Overview

Kopesh is an open-source printed circuit board by Koumbaya, from the Koumbaya/Kopesh repository on GitHub. It is a 2-layer board of 325.2 × 131.1 mm with 114 parts on 77 nets, routed with 1,260 tracks and 53 vias.

It is built around the SK6812MINI-E. Its parts include 55 diodes, 1 IC, 1 connector and 1 switch. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.

Main components

1

README

Readme.md

Kopesh

The Kopesh is an "alice-ortho" 40% (well, almost 50%...) Keyboard with (optionals) OLED and undeglow.

grass without plate

Cases

I've tried to give multiples options regarding mounting and plates so here you will find :

  • a Sandwish-mount acrylic case, where the PCB is just "hanging" and the whole thing is a stack of acrylic and (optionnaly) metal for the switchplate

acrylic case

acrylic case

  • cutouts for a more slim case (just a bottom plate, switchplate) which can be made either of FR4 materials (PCB) or acrylic.

fr4 case

  • basic fullsize 3D printed "drop in" case. I'm working on some other 3D case.

3D case

  • fullsize plate-mounted 3 part 3D printed case (this one may have a better feeling due to it being plate-mounted)

3D case2

3D case2 You'll need 8 M2x16mm screws for this one.

Content

(sorry the folders are a bit of a mess)

  • root folder contain the KiCad project -/case/cutouts contain everything to cut the sandwish case.

    top1,top2 should be cut in 3mm

    bottom should be cut in 3mm but you can probably make it less thick I guess. Go for frosted acrylic if you want to enjoy the underglow.

    middle should be cut in 8mm, or multiplied if cut in 2 ou 3mm.

    switchplate should be 1,5mm so it snaps to the switches

-gerbers folder contain the gerbers .zip you need to order the PCB from a PCB maker -FR4 Case folder contains both the .zip to order the plates for the slim case out of PCB, or the .dxf to cut them out of acrylic (there are various solidworks parts in various folders if you need to modify something)

Making it

I won't bother to explain everything, there are plenty guides onlines, so here is what you need (beside switches obviously) :

  • 47 x 1N4148 diodes (or the SMD equivalent, the PCB support both TH and SMD)
  • 1 x Pro Micro (or elite C)

Optionnaly :

  • 8 x SK6812 MINI-E LEDs (the '-E' part is important, non-E don't have the same pinout)
  • 1 x SSD1206 OLED display
  • a tiny reset button

Notes for the acrylic case : due to a f-up on my part, the pro-micro doesn't really fit on top of the PCB, so if you make an acrylic case (disregard that for all other type of case!) you'll have to solder the pro-micro under the PCB, in the same orientation (so USB port touching the PCB if you will : whatever the placement of the pro-micro, it should have the usb port pointing "up" towards the keycaps). One solution would be to make a cut on the metal plate and first top layer of acrylic, PM me if you want that or open an issue.

withoutcaps

QA

  • Who's the little guy on the PCB : the god of keyboards Christian Clavier

TODO :

  • qmk : better OLED library
  • another 3D printed case

THANKS

LICENSE

All the STL/DXF/SLDPRT/ and Kicad PCB files here are licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.

CC

I need to make a proposer link to the correcte repositories for the Kicad Footprints.

Parts

114
QtyValueFootprintReferences
47D_Smallfootprints:D3_TH_SMDD10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25 +31
47MX-NoLEDMX_Only:MXOnly-1U-NoLEDMX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +31
8SK6812MINI-Efootprints:YS-SK6812MINI-ELED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8
6footprints:LEGO_HOLE, , , , ,
2footprints:LEGO_HOLE_small,
1LOGOcc:ccG***
1OLEDConnectors:Fan_Pin_Header_Straight_1x04J1
1ProMicropromicro:ProMicroU1
1Resetfootprints:ResetSWsw1

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Questions

How big is the Kopesh PCB?

It measures 325.2 × 131.1 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Kopesh use?

114 parts, built around the SK6812MINI-E. 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 Kopesh KiCad files?

From the Koumbaya/Kopesh repository on GitHub, at the commit this page was made from: the board is kopesh.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Kopesh design in my own project?

Its repository states no licence, so its author keeps all rights: ask Koumbaya before reusing the design.