HardLabs

JayK

josuegaleas·JayK·PCB/JayK.kicad_pcb

JayK PCB layout, top view — open source AVR/Arduino board by josuegaleas

About the JayK PCB

JayK is an open source AVR/Arduino PCB design by josuegaleas, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 419.1 × 101.2 mm, with 207 components from 23 distinct parts.

Its main chip is the AT90USB1286-AU, from the AVR/Arduino family. By type, the board carries 93 relays, 93 diodes, 1 IC, 1 crystal, 1 connector and 1 switch.

It belongs with the keyboards designs in this gallery.

From the project

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

JayK Pro with more features can be found here.

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

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

Refer to this for dependencies and programming.

JayK, from the project README
From the project README

Main components on the JayK

AT90USB1286-AU

JayK bill of materials (BOM)

207 components, 23 distinct parts.

QtyPartRefs
1
AT90USB1286-AU
U1
1
16M
Y1
1
USB_C_Receptacle_USB2.0
J1
5
100n
C_AREF1, C_AVCC1, C_UVCC1, C_VCC1, C_VCC2
2
22p
C_CLK1, C_CLK2
1
1u
C_UCAP1
1
10u
C_VBUS1
1
PESD5V0L2BT
D_ESD1
1
D
D_VBUS1
75
KEYSW
K0,0, K0,1, K0,2, K0,3, K0,4, K0,5, K0,6, K0,7 +67
4
KEYSW
K0,17, K1,3, K3,3, K4,0
2
KEYSW
K1,4, K1,17
1
KEYSW
K2,4
2
KEYSW
K2,17, K3,4
1
KEYSW
K3,16
7
KEYSW
K4,4, K4,5, K4,6, K4,13, K4,14, K4,16, K4,17
1
KEYSW
K4,9
1
1k
R_HWB1
1
47k
R_RST1
2
22
R_USB1, R_USB2
Show 3 more
QtyPartRefs
2
5.1k
R_USB3, R_USB4
1
SW_PUSH
SW1
93
D
D0,0, D0,1, D0,2, D0,3, D0,4, D0,5, D0,6, D0,7 +85

JayK design files

The KiCad project lives in the josuegaleas/JayK repository on GitHub; these links point at the commit this page was built from.

JayK: common questions

What microcontroller does the JayK use?

The JayK is built around the AT90USB1286-AU, from the AVR/Arduino family.

How big is the JayK PCB?

The JayK measures 419.1 × 101.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the JayK?

207 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the JayK design files?

From the josuegaleas/JayK repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the JayK design in my own project?

Yes, under the terms of its Apache-2.0 license, which josuegaleas chose for the repository.

Can I test firmware for the JayK without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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