HardLabs

Keyboard

penguin86·pat80·pat80-io-devices/keyboard/hardware/keyboard/keyboard.kicad_pcb

Keyboard PCB layout, top view — open source board by penguin86

About the Keyboard PCB

Keyboard is an open source PCB design by penguin86, published on GitHub. It is a 2-layer board measuring 273.1 × 144.8 mm, with 116 components from 61 distinct parts.

By type, the board carries 53 switches, 52 diodes, 9 resistors, 1 connector and 1 capacitor.

It belongs with the keyboards and retro computing designs in this gallery.

From the project

Pat80 Home Computer is an attempt to develop the simplest possible Zilog Z80 based computer in 2021

Pat80 Home Computer is an attempt to develop the simplest possible Zilog Z80 based computer in 2021.

Here is a picture of the early stages of development:

The only fully working configuration as now is the Core board with two devices hooked to its I/O bus: the Arduino Parallel Terminal (see pat80-io-devices/parallel-terminal and pat80-computer/software/z80-assembly/os/drivers/arduinoterminal.asm) and the SN76489 sound chip (see pat80-computer/software/z80-assembly/os/drivers/hd44780.asm`)

Keyboard, from the project README
From the project README

Keyboard bill of materials (BOM)

116 components, 61 distinct parts.

QtyPartRefs
1
Keyboard connector
J3
1
1
SW1
1
Q
SW2
1
A
SW3
1
Z
SW4
1
X
SW5
1
S
SW6
1
W
SW7
1
2
SW8
1
3
SW10
1
E
SW11
1
D
SW12
1
C
SW13
1
V
SW14
1
F
SW15
1
R
SW16
1
4
SW17
1
5
SW18
1
T
SW19
1
G
SW20
Show 41 more
QtyPartRefs
1
B
SW21
1
N
SW22
1
H
SW23
1
Y
SW24
1
6
SW25
1
7
SW26
1
U
SW27
1
J
SW28
1
M
SW29
1
'
SW30
1
K
SW31
1
I
SW32
1
8
SW33
1
9
SW34
1
O
SW35
1
L
SW36
1
P
SW37
1
[
SW38
1
]
SW39
1
0
SW40
1
BACKSPACE
SW41
1
TILDE
SW42
1
TAB
SW43
1
,
SW44
1
.
SW45
1
SPACE
SW46
1
/
SW47
1
;
SW48
1
LSHIFT
SW49
1
CTRL
SW50
1
RSHIFT
SW51
1
RETURN
SW52
1
PATO
SW53
1
CAPSLK
SW54
51
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +43
1
CAPSLOCK_LED
D9
1
56pF
C5
1
470
R1
4
10k
R2, R3, R4, R5
3
10k
R6, R7, R8
1
10k
R9

Keyboard design files

The KiCad project lives in the penguin86/pat80 repository on GitHub; these links point at the commit this page was built from.

Keyboard: common questions

How big is the Keyboard PCB?

The Keyboard measures 273.1 × 144.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keyboard?

116 components, from 61 distinct parts. The full bill of materials is listed on this page.

Where can I download the Keyboard design files?

From the penguin86/pat80 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Keyboard design in my own project?

The repository has no license, so all rights stay with penguin86. Use it as a reference, and ask the author before reusing the design.

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