Bus breakout
saktheeswaranswan·8-bit-computer-pcb-version-simple·bus_breakout/bus_breakout.kicad_pcb
About the Bus breakout
Bus breakout is an open source PCB design by saktheeswaranswan, published on GitHub under the MIT license. It is a 2-layer board measuring 57.2 × 41.9 mm, with 4 components from 4 distinct parts.
It belongs with the displays & leds and dev boards & breakouts designs in this gallery.
From the project
Schematics and code for my home-made 8-bit CPU and its companion boards.
Schematics and code for my home-made 8-bit CPU and its companion boards.
During the past month, I designed and built a programmable 8-bit CPU from scratch, out of basic series 74LS logic ICs.
This repository contains pictures, schematics, and code for this project and its companion boards.
The MK1 CPU is composed of several modules, all connected trough a common 8-bit BUS, the status of each module is shown by dedicated LEDs.

Bus breakout bill of materials (BOM)
4 components, 4 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Signals | PinHeader_1x08_P2.54mm_Vertical | J1 |
| 1 | BUS | PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | Power | PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | Conn | PinHeader_2x09_P2.54mm_Vertical | J4 |
Bus breakout design files
The KiCad project lives in the saktheeswaranswan/8-bit-computer-pcb-version-simple repository on GitHub; these links point at the commit this page was built from.
Bus breakout: common questions
How big is the Bus breakout?
The Bus breakout measures 57.2 × 41.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bus breakout?
4 components, from 4 distinct parts. The full bill of materials is listed on this page.
Where can I download the Bus breakout design files?
From the saktheeswaranswan/8-bit-computer-pcb-version-simple repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Bus breakout design in my own project?
Yes, under the terms of its MIT license, which saktheeswaranswan chose for the repository.
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