HardLabs

Omronkbd

zuiko21·minimOS·hard/kicad/omronkbd/omronkbd.kicad_pcb

Omronkbd PCB layout, top view — open source board by zuiko21
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About the Omronkbd PCB

Omronkbd is an open source PCB design by zuiko21, published on GitHub under the MIT license. It is a 2-layer board measuring 250.8 × 130.2 mm, with 115 components from 89 distinct parts.

Other key parts include the 74HC138, 74HC574, 74HC245, 74HC238 and 74HC74. By type, the board carries 69 switches, 20 diodes, 12 ICs, 6 resistors, 5 connectors and 2 capacitors.

It belongs with the retro computing designs in this gallery.

From the project

Scalable OS for 6502/65816

With great embarrassment I have to admit never having owned a 65xx computer... but suport for these classic machines shouldn't be difficult to add -- for instance, I have declared as 'reserved' the two first zero-page bytes in case the utterly popular Commodore-64 (using a 6510) is targeted.

Back to my own-designed devices, here's the range (past, present and future):

Main components on the Omronkbd

74HC13874HC57474HC24574HC23874HC7474HC8674HC17474HC595

Omronkbd bill of materials (BOM)

115 components, 89 distinct parts.

QtyPartRefs
1
74HC138
U1
1
74HC574
U2
4
74HC245
U3, U5, U101, U102
1
74HC238
U4
1
74HC74
U6
1
74HC86
U9
1
74HC174
U103
2
74HC595
U201, U202
1
TO COMPUTER
J1
2
IOx
J2, J3
1
NES 1
J201
1
NES 2
J202
1
MD/VCS
JP1
1
1
SW1
1
2
SW2
1
3
SW3
1
4
SW4
1
5
SW5
1
6
SW6
1
7
SW7
Show 69 more
QtyPartRefs
1
8
SW8
1
9
SW9
1
0
SW10
1
Q
SW11
1
W
SW12
1
E
SW13
1
R
SW14
1
T
SW15
1
Y
SW16
1
U
SW17
1
I
SW18
1
O
SW19
1
P
SW20
1
A
SW21
1
S
SW22
1
D
SW23
1
F
SW24
1
G
SW25
1
H
SW26
1
J
SW27
1
K
SW28
1
L
SW29
1
ENTER
SW30
1
LSHIFT
SW31
1
Z
SW32
1
X
SW33
1
C
SW34
1
V
SW35
1
B
SW36
1
N
SW37
1
M
SW38
1
L-ALT
SW39
1
SPACE
SW40
1
ESC
SW41
1
PGUP
SW42
1
PGDN
SW43
1
LCTRL
SW44
1
ORD
SW45
1
TAB
SW46
1
CAPS
SW47
1
<
SW48
1
APOS
SW49
1
GRAVE
SW50
1
Ñ
SW51
1
COMMA
SW52
1
IEXCL
SW53
1
PLUS
SW54
1
ACUTE
SW55
1
DOT
SW56
1
DEL
SW57
1
BKSP
SW58
1
Ç
SW59
1
MINUS
SW60
1
UP
SW61
1
LEFT
SW62
1
DOWN
SW63
1
RIGHT
SW64
1
R-ALT
SW65
1
RSHIFT
SW66
1
RCTRL
SW67
1
L-SP
SW68
1
R-SP
SW69
18
4148
D1, D2, D3, D4, D5, D6, D7, D8 +10
1
CAPS LOCK
D19
1
LEGACY
D20
2
22n
C1, C2
3
680
R1, R2, R3
1
3K3
RN1
2
22K
RN2, RN101

Omronkbd design files

The KiCad project lives in the zuiko21/minimOS repository on GitHub; these links point at the commit this page was built from.

Omronkbd: common questions

How big is the Omronkbd PCB?

The Omronkbd measures 250.8 × 130.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Omronkbd?

115 components, from 89 distinct parts. The full bill of materials is listed on this page.

Where can I download the Omronkbd design files?

From the zuiko21/minimOS repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Omronkbd design in my own project?

Yes, under the terms of its MIT license, which zuiko21 chose for the repository.

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