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2 layers305 × 95 mmCK50, the printed circuit board in 3D

A collection of all of my keyboard projects

Size
305 × 95 mm
Copper layers
2
Thickness
1.6 mm
Parts
114
Nets
73
Pads
829
Tracks, vias
681, 18
Pours
2
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
19 Jul 2019
Updated
30 Apr 2021

Overview

CK50 is an open-source printed circuit board by cfbender, from the cfbender/keyboards repository on GitHub, published under the MPL-2.0 licence. It is a 2-layer board of 305 × 95 mm with 114 parts on 73 nets, routed with 681 tracks and 18 vias.

Its parts include 53 switches, 52 diodes and 1 IC. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.

README

README.md

The Society of the Crossed Keys

In here you will find my growing list of mechanical keyboard design projects, some of which have been run as local or larger GBs with KeyHive.

Please let me know if you have any questions with ordering any PCBs (or let me know if you do it regardless!), or have any questions on how they are designed or function.

Please feel free to open any issues with any cases or PCBs that you have here, and I will do my best to address them!

Acrylic Case Info

All of my acrylic case files follow the below naming standard:

  • All layers are numbered starting with 0, and are numbered up from the bottom
  • All layers will be designated with L<layer number>
  • All feet layers will be designated with F<layer number>
  • All M3 cases use M3x20mm screws that tap directly into the bottom layer
  • All M2 cases will use M3x15+3mm male-to-female brass barrel standoffs where the standoff taps directly into the bottom layer, and M2x6mm screws to screw into the female end of the standoff
  • All feet have M4 holes, but I typically have been using M3x14mm screws with M3 nuts on the inside

Parts

114
QtyValueFootprintReferences
521N4148Keebio-Parts:Diode-dualD0, D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22 +36
44KEYSWKeebio-Parts:MX_PCB_100HK0, K1, K2, K10, K11, K12, K13, K14, K16, K17, K18, K19, K20, K21, K22, K23 +28
6MountingHole_2.2mm_M2MountingHole:MountingHole_2.2mm_M2H0, H1, H2, H3, H4, H5
4KEYSWKeebio-Parts:MX_PCB_125HK15, K40, K44, K46
2KEYSWKeebio-Parts:MX_PCB_175HK29, K41
1Gengar_Thicckeebs:Gengar_ThiccG***
1KEYSWKeebio-Parts:MX_PCB_700HK45
1KEYSWKeebio-Parts:MX_PCB_275HK45.2
1KEYSWKeebio-Parts:MX_PCB_225HK50
1ProMicroKeebio-Parts:ARDUINO_PRO_MICROU0
1crossedkeyskeebs:crossedkeysG***

Questions

How big is the CK50 PCB?

It measures 305 × 95 mm and has 2 copper layers, 1.6 mm thick.

What parts does the CK50 use?

114 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 CK50 KiCad files?

From the cfbender/keyboards repository on GitHub, at the commit this page was made from: the board is nightmare/pcb/CK50.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the CK50 design in my own project?

Its repository publishes it under the MPL-2.0 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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