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2 layers40 × 40 mmShift register ring, the printed circuit board in 3D

Shift register ring

smkent/pcb

PCB designs

Size
40 × 40 mm
Copper layers
2
Thickness
1.6 mm
Parts
77
Nets
109
Pads
352
Tracks, vias
968, 115
Pours
1
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
22 Mar 2024
Updated
11 Sep 2026

Overview

Shift register ring is an open-source printed circuit board by smkent, from the smkent/pcb repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 40 × 40 mm with 77 parts on 109 nets, routed with 968 tracks and 115 vias.

It is built around the 74HC595. Its parts include 48 diodes, 6 ICs, 3 connectors and 2 resistors.

Main components

1

README

README.md

PCB designs

A monorepository of my PCB designs created with KiCAD 8.

Layout and Workflow

Custom symbols and footprints are located in libraries, which is shared between PCB projects using ${KIPRJMOD}.

Individual PCB projects (e.g. *.kicad_pro and friends) are located within within pcb for active projects, or pcb-archived for archived projects.

When a PCB is ordered from a project, fabrication outputs are created and in the project's fab subdirectory and committed to the repository.

Setup

Ensure pipx is installed:

sh
pip install pipx

Install scons:

sh
pipx install scons

Install KiCAD-related dependencies using the system site packages directory:

sh
pipx install --system-site-packages kikit interactivehtmlbom

Build

To render all outputs, simply run scons.

To render outputs for a particular board, run scons -u within that board's project subdirectory.

Licenses

Individual hardware designs in this repository may use different licenses. The following licenses apply unless an included design directory specifies different license(s).

The lcsc KiCAD symbols, footprints, and 3D models libraries were created using easyeda2kicad (pypi), which are from LCSC. More info about easyeda2kicad

Parts

77
QtyValueFootprintReferences
48LEDcustom:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder_simpleLED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, LED21, LED22, LED23 +32
1210KResistor_SMD:R_Array_Convex_4x0603RN1, RN2, RN3, RN4, RN5, RN6, RN7, RN8, RN9, RN10, RN11, RN12
674HC595Package_SO:SOIC-16_3.9x9.9mm_P1.27mmU1, U2, U3, U4, U5, U6
210KResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR1, R2
2JST SHconnector:JST_SH_SM06B-SRSS-TB_1x06-1MP_P1.00mm_HorizontalJ2, J3
1Pin Headerscustom:PinHeader_1x08_P2.54mm_Vertical_simple_pad2gndJ0

The 71 most common of 77 parts.

Questions

How big is the Shift register ring PCB?

It measures 40 × 40 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Shift register ring use?

77 parts, built around the 74HC595. 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 Shift register ring KiCad files?

From the smkent/pcb repository on GitHub, at the commit this page was made from: the board is pcb-archived/stackable1/shift-register-ring/shift-register-ring.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Shift register ring design in my own project?

Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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