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RC6802 UI

tebl·RC6802-Microchicken·RC6802 UI/RC6802 UI.kicad_pcb

RC6802 UI PCB layout, top view — open source board by tebl
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About the RC6802 UI PCB

RC6802 UI is an open source PCB design by tebl, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 99.1 × 86.4 mm, with 80 components from 50 distinct parts.

Other key parts include the 74LS374, 74LS00 and 74LS73. By type, the board carries 30 resistors, 21 switches, 8 capacitors, 5 transistors, 4 modules and 4 diodes.

It belongs with the retro computing designs in this gallery.

From the project

Computer based on the Motorola 6802 processor, called RC6802 Microchicken as it's an adaption of the one found in a computer projects book by Daniel Metzger.

One of my most enjoyable reads the past year has been "22 micro-computer projects - to build, learn and learn" by Daniel L. Metzger, the Microchicken-computer is described in detail within it and so I sought to build one myself. The computer has been designed as a set of smaller modules, for an overall description a listing of the available modules - see the main project README!

RC6802 UI, from the project README
From the project README

Main components on the RC6802 UI

74LS37474LS0074LS73

RC6802 UI bill of materials (BOM)

80 components, 50 distinct parts.

QtyPartRefs
1
74LS374
U1
1
74LS00
U2
1
74LS73
U3
4
Mounting
M1, M2, M3, M4
2
2N3906
Q1, Q2
3
2N3904
Q3, Q4, Q5
1
TAPE
J1
1
RC6802_UI_Port
J2
1
EXT_KEYPAD
J3
1
RESET
SW1
1
~IRQ
SW2
1
Ø
SW3
1
4
SW4
1
8
SW5
1
C
SW6
1
1
SW7
1
5
SW8
1
9
SW9
1
D
SW10
1
2
SW11
Show 30 more
QtyPartRefs
1
6
SW12
1
A
SW13
1
E
SW14
1
3
SW15
1
7
SW16
1
B
SW17
1
F
SW18
1
TAPE
SW19
1
STEP
SW20
1
SST
SW21
1
RIGHT
AFF1
1
LEFT
AFF2
1
DATA_IN
D1
3
1n914
D2, D3, D4
4
100nF
C1, C2, C3, C8
2
50nF
C4, C6
1
68nF
C5
1
500nF
C7
4
4k7
R1, R2, R3, R4
9
220
R5, R6, R7, R8, R9, R10, R11, R27 +1
3
10k
R12, R18, R24
1
100
R13
2
1k5
R14, R23
1
6k2
R15
1
3k3
R16
1
2k7
R17
5
1k
R19, R20, R21, R28, R30
1
6k8
R22
1
51k
R25
1
2k2
R26

RC6802 UI design files

The KiCad project lives in the tebl/RC6802-Microchicken repository on GitHub; these links point at the commit this page was built from.

RC6802 UI: common questions

How big is the RC6802 UI PCB?

The RC6802 UI measures 99.1 × 86.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RC6802 UI?

80 components, from 50 distinct parts. The full bill of materials is listed on this page.

Where can I download the RC6802 UI design files?

From the tebl/RC6802-Microchicken repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the RC6802 UI design in my own project?

Yes, under the terms of its CERN-OHL-1.2 license, which tebl chose for the repository.

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