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RC6802 Serial Chicken

tebl·RC6802-Microchicken·RC6802 Serial Chicken/RC6802 Serial Chicken.kicad_pcb

RC6802 Serial Chicken PCB layout, top view — open source board by tebl

About the RC6802 Serial Chicken PCB

RC6802 Serial Chicken 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 × 45.7 mm, with 17 components from 14 distinct parts.

Other key parts include the MC6850, 74LS04 and 74LS138. By type, the board carries 4 jumpers, 3 ICs, 3 connectors, 3 capacitors, 3 resistors and 1 crystal.

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.

When starting out with retro computers, both fictional made homebrew or the commercial ones that were actually available for purchase in the 70s and 80s, there's one book in particular I've particularly enjoyed reading - that book is "22 micro-computer projects - to build, learn and learn" by Daniel Metzger (check out ebay or abebooks.com for a copy). Written in 1985 on the tail-end of the homebrew computer-period, it gathers what I believe is the culmination of 10 years of teaching basic electronics, digital logic and computers to people without any prior knowledge for any of those things -…

RC6802 Serial Chicken, from the project README
From the project README

Main components on the RC6802 Serial Chicken

MC685074LS0474LS138

RC6802 Serial Chicken bill of materials (BOM)

17 components, 14 distinct parts.

QtyPartRefs
1
MC6850
U1
1
74LS04
U2
1
74LS138
U3
1
1.8432Mhz
X1
1
RC6802_Backplane
J1
1
FTDI
J2
1
ADDRESS
J3
1
RTS_EN
JP1
1
USB_PWR
JP2
1
CLOCK_SEL
JP3
1
IRQ_OUT_SEL
JP4
3
100nF
C1, C2, C3
1
2k2
R1
2
2k7
R2, R3

RC6802 Serial Chicken 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 Serial Chicken: common questions

How big is the RC6802 Serial Chicken PCB?

The RC6802 Serial Chicken measures 99.1 × 45.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RC6802 Serial Chicken?

17 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the RC6802 Serial Chicken 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 Serial Chicken 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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