12 open source boards using the 74LS05

Real designs built with the 74LS05, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.

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The 74LS05 in open source designs

The gallery holds 12 open source boards using the 74LS05 from 3 GitHub repositories; a typical one measures about 220 × 145 mm and carries around 63 components.

83% are two-layer designs, the rest use four layers or more, and 8% carry an open source license.

The most starred is Leako by barbeque.

Microcontrollers on boards using the 74LS05

RP2040/RP2350 1

What boards using the 74LS05 are built for

74LS05: common questions

Where can I find a 74LS05 reference design?

Each of the 12 boards on this page is a real design using the 74LS05. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.

Which microcontrollers do boards using the 74LS05 use?

Most are built on RP2040/RP2350 (1).

How big is a typical board using the 74LS05?

The median is 220 × 145 mm, and 83% are two-layer designs.

What is the most popular open source board using the 74LS05?

By GitHub stars, Leako by barbeque, with 20 stars.

Can I simulate one of these boards using the 74LS05 before building it?

Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.

12 open source boards using the 74LS05

Leako

Front panel 9602

Pico506

ASCII keyboard

128 X 16 RAM V4 FINAL

ASCII keyboard 3

Octal display

Educ 8 timing

256 word memory

Program counter and adder logic

PC and ADDER 74LS74 MOD

Educ 8 decoder