2 layers125.7 × 64.4 mm Sr8a, the printed circuit board in 3D

Sr8a

Arquitetura de processador conceitual

Size: 125.7 × 64.4 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 23
Nets: 63
Pads: 254
Tracks, vias: 373, 40
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 11 Dec 2025
Updated: 24 Aug 2026

Overview

Sr8a is an open-source printed circuit board by rcapaverde, from the rcapaverde/cubo repository on GitHub. It is a 2-layer board of 125.7 × 64.4 mm with 23 parts on 63 nets, routed with 373 tracks and 40 vias.

It is built around the 74LS574N, 74HC238D and 74LS00SC. Its parts include 10 capacitors, 10 ICs, 1 resistor, 1 diode and 1 connector.

Main components

README

README.md

cubo - um processador conceitual

Parts

Qty	Value	Footprint	References
10	100nF	Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm	C1, C2, C3, C4, C5, C6, C7, C8, C9, C10
7	74LS574	Package_DIP:DIP-20_W7.62mm	U1, U2, U3, U4, U5, U6, U7
1	1K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R15
1	74HC238	Package_DIP:DIP-16_W7.62mm	U8
1	74LS00	Package_DIP:DIP-14_W7.62mm	U10
1	74LS138	Package_DIP:DIP-16_W7.62mm	U9
1	PWR	LED_THT:LED_D5.0mm	D15
1	conn	edge_connector:edge-connector-44	J2

Questions

How big is the Sr8a PCB?

It measures 125.7 × 64.4 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Sr8a use?

23 parts, built around the 74LS574N, 74HC238D and 74LS00SC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Sr8a KiCad files?

From the rcapaverde/cubo repository on GitHub, at the commit this page was made from: the board is pcb_v2/sr8a/sr8a.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Sr8a design in my own project?

Its repository states no licence, so its author keeps all rights: ask rcapaverde before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/rcapaverde-cubo-sr8a" title="Sr8a in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/rcapaverde-cubo-sr8a.jpg" alt="Sr8a" width="1200" height="900">

A picture that opens the board, for a README

[![Sr8a](https://pcbkit.io/embed/boards/rcapaverde-cubo-sr8a.jpg?size=s)](https://pcbkit.io/boards/rcapaverde-cubo-sr8a)

Source

Repository: rcapaverde/cubo
Board file: pcb_v2/sr8a/sr8a.kicad_pcb
Commit: 0621045
Licence: Not stated

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