HardLabs

Okey65

kiks64·OKey65·PCB/okey65-pcb.kicad_pcb

Okey65 PCB layout, top view — open source AVR/Arduino board by kiks64

About the Okey65 PCB

Okey65 is an open source AVR/Arduino PCB design by kiks64, published on GitHub. It is a 2-layer board measuring 255.7 × 104.3 mm, with 154 components from 18 distinct parts.

Its main chip is the ATmega32U4-AU, from the AVR/Arduino family. By type, the board carries 68 diodes, 65 LEDs, 8 resistors, 7 capacitors, 1 IC and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

Okey65 ortholinear keyboard

The goal of this project is to design an enhanced version of my hand-wired keyboard that I have been using for several years. The keyboard has a well-balanced size that allows it to be quite compact while still having all the important keys available on the main layer. Its layout is quite atypical but very convenient for typing text with accented Latin characters.

Okey65, from the project README
From the project README

Main components on the Okey65

ATmega32U4-AU

Okey65 bill of materials (BOM)

154 components, 18 distinct parts.

QtyPartRefs
1
ATmega32U4-AU
U1
1
16MHz
Y1
1
USB_C_Receptacle_USB2.0
J1
1
500mA
F1
1
SW_Push
SW1
65
MX-NoLED
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +57
65
SOD-123
D1, D2, D3, D4, D5, D6, D7, D8 +57
2
LED
D66, D67
1
PRTR5V0U2X
D68
1
60@100MHz
FB1
2
22pF
C1, C2
1
1uF
C3
3
0.1uF
C4, C5, C6
1
10uF
C7
2
10k
R1, R4
2
22
R2, R3
2
150
R5, R8
2
5.1k
R6, R7

Okey65 design files

The KiCad project lives in the kiks64/OKey65 repository on GitHub; these links point at the commit this page was built from.

Okey65: common questions

What microcontroller does the Okey65 use?

The Okey65 is built around the ATmega32U4-AU, from the AVR/Arduino family.

How big is the Okey65 PCB?

The Okey65 measures 255.7 × 104.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Okey65?

154 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Okey65 design files?

From the kiks64/OKey65 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Okey65 design in my own project?

The repository has no license, so all rights stay with kiks64. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Okey65 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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