27 open source boards using the 74LS161
Real designs built with the 74LS161, 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.
Instruction
jes
237.5 × 102.9 mm110 parts2LUnlicense301
68000
jefftranter
134.6 × 208.3 mm90 parts2LNo license132
80ColumnCard
btb
155.2 × 78.6 mm47 parts2LApache-2.042
Vectron vga plus
nickbild
177.8 × 139.7 mm36 parts2LMIT39
Eda designs
kyllikki
237.5 × 171.5 mm148 parts2LMIT32
Microdigital - TK 2000
clemarfolly
236.8 × 169.8 mm195 parts2LNo license17
Tlcs90-rom reader
sergiopolog
111.8 × 121.9 mm54 parts2LGPL-3.015
Vectron vga plus v2
162.8 × 104.8 mm78 parts2LNo license14
Betadisk clone
alvaroalea
99.7 × 149.9 mm83 parts2LNo license7
Northstar HD-5
abzman
190.6 × 172.4 mm154 parts2LUnlicense4
AVR/ArduinoTCPU8-Alpha
halfburnttoast
150 × 150 mm138 partsGPL-2.04
VIO MPF I
electrickery
156 × 100.1 mm63 parts2LNo license4
BitStack-DigiTrainer
RetroStack
320 × 150 mm262 parts2LMIT2
RP2040/RP2350SORD M68 USB Keyboard Converter
tsunozemichan
130.8 × 62.2 mm46 parts2LNo license2
Huhhhh I didnt save
ethanjamesauto
229.9 × 93.3 mm365 parts2LNo license1
8bitCPU
BrainwashAlpha
246.4 × 185.4 mm277 parts4LNo license1
SAP-Plus Program Counter and Stack Pointer
TomNisbet
102 × 96 mm50 parts2LMIT10
Processor attempt 1
229.9 × 93.3 mm365 parts2LNo license1
Lomax Thunder 186 Redux
RichCini
253.6 × 137.7 mm116 parts4LNo license1
Processor attempt 3
229.9 × 93.3 mm365 parts2LNo license1
Processor attempt 4
229.9 × 83.8 mm291 parts2LNo license1
VIA Plus
demik
77.5 × 44.7 mm18 parts4LCERN-OHL-P-2.027
SAP-Plus Instruction Register and Step Counter
102 × 96 mm38 parts2LMIT10
Processor attempt 2
229.9 × 93.3 mm272 parts2LNo license1
SAP-Plus Output Register
102 × 96 mm36 parts2LMIT10
8 bit logic analyzer
104.1 × 25.4 mm60 parts2LNo license1
SAP-Plus System Clock
102 × 96 mm32 parts2LMIT10
The 74LS161 in open source designs
The gallery holds 27 open source boards using the 74LS161 from 19 GitHub repositories; a typical one measures about 162.8 × 100.1 mm and carries around 90 components.
88% are two-layer designs, the rest use four layers or more, and 48% carry an open source license.
The most starred is Instruction by jes.
Parts used alongside the 74LS161
Microcontrollers on boards using the 74LS161
What boards using the 74LS161 are built for
74LS161: common questions
Where can I find a 74LS161 reference design?
Each of the 27 boards on this page is a real design using the 74LS161. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the 74LS161?
The 74LS04, 74LS32, 74LS245, 74LS00 and 74LS138 appear in the most repositories here.
Which microcontrollers do boards using the 74LS161 use?
Most are built on AVR/Arduino (1) and RP2040/RP2350 (1).
How big is a typical board using the 74LS161?
The median is 162.8 × 100.1 mm, and 88% are two-layer designs.
What is the most popular open source board using the 74LS161?
By GitHub stars, Instruction by jes, with 301 stars.
Can I simulate one of these boards using the 74LS161 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.