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2 layers305 × 125.3 mmKeyboard, the printed circuit board in 3D

Keyboard

chinh4/mechanizer1

keeby

Open in PCBKitView on GitHub.kicad_pcb
Size
305 × 125.3 mm
Copper layers
2
Thickness
1.6 mm
Parts
198
Nets
119
Pads
858
Tracks, vias
3,985, 0
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
2 Mar 2025
Updated
31 Oct 2026

Overview

Keyboard is an open-source printed circuit board by chinh4, from the chinh4/mechanizer repository on GitHub. It is a 2-layer board of 305 × 125.3 mm with 198 parts on 119 nets, routed with 3,985 tracks and 0 vias.

Its parts include 58 switches, 54 diodes, 6 connectors and 2 ICs. It belongs with the keyboards and input boards of this library.

README

README.md

tag

What and Why?

This is an ortholinear, split keyboard with wireless functionality and a display with a theme based on the song Mesmerizer by 32ki. I designed this keyboard to improve on issues I had with my previous ortholinear keyboard design, the blahajergo.

Images

Overall

Overall

Schematic

Schematic

PCB

PCB-2d PCB-3d-f PCB-3d-b

3D model

I have moved from inventor to onshape for the cad.

BOM

NameQtyPriceVendorLink
THT 1N4148 Diodes54$0.00HackClubN/A
KBDiy Toy54$24.45AliExpresshttps://www.aliexpress.us/item/3256807300360436.html
JWK Linear Switches54$14.4typeractivehttps://typeractive.xyz/products/jwk-jwick-linear-switches?variant=45434593968359
Kalih MX hotswap sockets54$13.45AliExpresshttps://www.aliexpress.us/item/3256808768257055.html
4P4C jack2$1.87AliExpresshttps://www.aliexpress.us/item/3256807699240291.html
JST connector2$0.73AliExpresshttps://www.aliexpress.us/item/3256808844534562.html
0.91" Oled display2$1.96AliExpresshttps://www.aliexpress.us/item/3256805114690528.html
3.7v Lithium battery2$8.00typeractivehttps://typeractive.xyz/products/lithium-battery-110mah?variant=43294731665639
JST connector2$1.00typeractivehttps://typeractive.xyz/products/battery-jack?variant=45597492707559
SMD side button2$1.50typeractivehttps://typeractive.xyz/products/reset-button
SPDT Switch2$1.50typeractivehttps://typeractive.xyz/products/power-switch?variant=45597854171367
M2 screws24$2.44AliExpresshttps://www.aliexpress.us/item/2255799870438450.html
M2 standoffs12$5.40AliExpresshttps://www.aliexpress.us/item/3256806016664762.html
Seeed XIAO ESP32-S3 Plus (already own)2$13.80seeedstudiohttps://www.seeedstudio.com/Seeed-Studio-XIAO-ESP32S3-Plus-p-6361.html
PCB1 (5)$36.92jlcpcbSee jlcpcb pic in Files
Total
AliExpress: $52.83 subtotal + $4.24 shipping + $3.33 fees = $58.61 total
typeractive: $26.40 subtotal + $0.00 shipping + $0.00 fees = $26.40 total
seeedstudio: $0.00 subtotal + $0.00 shipping + $0.00 fees = $0.00 total
jlcpcb: $21.40 subtotal + $15.52 shipping + $0.00 fees = $36.92 total
Total: $121.93

Parts

198
QtyValueFootprintReferences
66LOGOLOGOG***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G*** +50
54D_Smallchinh4thepro:ComboDiodeD1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +38
54Keyswitchchinh4thepro:Hotswap_MXS1, S2, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20, S21, S22, S23 +38
12ceoloide:mounting_hole_platedH1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12
24P4Cchinh4thepro:RJ9_Evercom_5301-440xxx_HorizontalJ3, J6
2Conn_01x02_SocketConnector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_HorizontalJ2, J5
2OLED_128x32chinh4thepro:OLED_128x32J1, J4
2SW_SPDTchinh4thepro:power_switch_smd_sideSW2, SW4
2Switchchinh4thepro:reset_switch_smd_sideSW1, SW3
2XIAO-HALF-HOLE-23Pchinh4thepro:Xiao_ESP32S3_Plus.kicad_symU1, U3

Questions

How big is the Keyboard PCB?

It measures 305 × 125.3 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Keyboard use?

198 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 Keyboard KiCad files?

From the chinh4/mechanizer repository on GitHub, at the commit this page was made from: the board is CAD/KiCad/keyboard.kicad_pcb and its schematic CAD/KiCad/Libraries/scottokeebs/Extras/ScottoModules/STM32F072CBT6/ScottoModules.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Keyboard design in my own project?

Its repository states no licence, so its author keeps all rights: ask chinh4 before reusing the design.

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