2 layers419.1 × 101.2 mm JayK, the printed circuit board in 3D

JayK

Full-size mechanical keyboard with USB-C and no lighting.

Size: 419.1 × 101.2 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 207
Nets: 134
Pads: 1,196
Tracks, vias: 1,427, 31
Pours: 2
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 29 Jan 2017
Updated: 10 Nov 2021

Overview

JayK is an open-source printed circuit board by josuegaleas, from the josuegaleas/JayK repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 419.1 × 101.2 mm with 207 parts on 134 nets, routed with 1,427 tracks and 31 vias.

It is built around the AT90USB1286-AU and PESD5V0L2BT. Its parts include 94 diodes, 94 switches, 1 IC, 1 connector and 1 crystal. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.

Main components

README

README.md

JayK

Full-size mechanical keyboard with USB-C and no lighting, inspired by the ONO-SENDAI MATRIX 83.

JayK Pro with more features can be found here.

Disclaimer

I have not printed this PCB out yet, and I am not 100% certain the design works. Please print with discretion.

Features

TMK-based firmware
Numpad on the left for comfort
USB-C port for modernness
No lighting for less complexity and lower cost

Layout

Default Layer

Other Layers

JSON files for these layouts can be found here and here, for editing in KLE.

Major Components

Microcontroller — Microchip's AT90USB1286
USB-C Port — Amphenol's 12401610E4#2A
Crystal — EPSON's FA-238

Tools

KiCad Libraries

Development

Clone this repository with:

bash

git clone --recursive https://github.com/josuegaleas/JayK.git

Hardware

Within KiCad, navigate to the PCB folder and open JayK.pro.

Using a grid size of 0.0234375 inches for editing the layout.

Software

Firmware can be compiled using make within the Firmware folder.

Refer to this for dependencies and programming.

References

Layout — Physical Keyboard Layouts Explained In Detail
PCB
Firmware
- TMK Keyboard Firmware Collection
- How to build your very own keyboard firmware

Category and platform

Keyboards and input AVR (ATmega, ATtiny)

Topics

mechanical-keyboard pcb firmware kicad tmk

Project files

Show this board on your page

https://pcbkit.io/boards/josuegaleas/JayK

The board's own page, for a message or a post.

Source

Repository: josuegaleas/JayK
Board file: PCB/JayK.kicad_pcb
Commit: b210f93
Licence: Apache-2.0

Parts

207

Qty	Value	Footprint	References
94	D	keyboard_parts:D_SOD123_axial	D0,0, D0,1, D0,2, D0,3, D0,4, D0,10, D0,11, D0,12, D0,13, D0,14, D0,15, D0,16, D0,17, D0,18, D0,19, D0,20 +78
75	KEYSW	keebs:Mx_Alps_100	K0,0, K0,1, K0,2, K0,3, K0,4, K0,5, K0,10, K0,11, K0,12, K0,13, K0,14, K0,15, K0,16, K0,18, K0,19, K0,20 +59
7	KEYSW	keebs:Mx_Alps_125	K4,4, K4,5, K4,6, K4,13, K4,14, K4,16, K4,17
5	100n	Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder	C_AREF1, C_AVCC1, C_UVCC1, C_VCC1, C_VCC2
4	KEYSW	keebs:Mx_Alps_200	K0,17, K1,3, K3,3, K4,0
2	22	Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder	R_USB1, R_USB2
2	22p	Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder	C_CLK1, C_CLK2
2	5.1k	Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder	R_USB3, R_USB4
2	KEYSW	keebs:Mx_Alps_150	K1,4, K1,17
2	KEYSW	keebs:Mx_Alps_225	K2,17, K3,4
1	10u	Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder	C_VBUS1
1	16M	Crystal:Crystal_SMD_SeikoEpson_FA238-4Pin_3.2x2.5mm_HandSoldering	Y1
1	1k	Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder	R_HWB1
1	1u	Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder	C_UCAP1
1	47k	Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder	R_RST1
1	AT90USB1286-AU	Package_QFP:TQFP-64_14x14mm_P0.8mm	U1
1	KEYSW	keebs:Mx_Alps_175	K2,4
1	KEYSW	keebs:Mx_Alps_625	K4,9
1	KEYSW	keebs:Mx_Alps_275	K3,16
1	PESD5V0L2BT	Package_TO_SOT_SMD:SOT-23_Handsoldering	D_ESD1
1	SW_PUSH	Button_Switch_SMD:SW_SPST_TL3342	SW1
1	USB_C_Receptacle_USB2.0	Connector_USB:USB_C_Receptacle_Amphenol_12401610E4-2A	J1

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Questions

How big is the JayK PCB?

It measures 419.1 × 101.2 mm and has 2 copper layers, 1.6 mm thick.

What parts does the JayK use?

207 parts, built around the AT90USB1286-AU and PESD5V0L2BT. 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 JayK KiCad files?

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

Can I use the JayK design in my own project?

Its repository publishes it under the Apache-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).