31 open source boards using the 74LS86
Real designs built with the 74LS86, 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.
Space Odyssey
jotego
49.6 × 78.3 mm22 parts2LGPL-3.0335
Sch
DownUnderCTF
150 × 110 mm47 parts4LNo license115
CGA Redux
hkzlab
337.6 × 105.7 mm168 parts4LCC-BY-NC-4.056
AVR/ArduinoISACard
profdc9
189.7 × 95.9 mm99 parts2LCC-BY-SA-4.046
80ColumnCard
btb
155.2 × 78.6 mm47 parts2LApache-2.042
Eda designs
kyllikki
237.5 × 171.5 mm148 parts2LMIT32
ISA DualUARTParport
176.5 × 90.2 mm69 parts2LCC-BY-NC-4.018
Microdigital - TK 2000
clemarfolly
236.8 × 169.8 mm195 parts2LNo license17
Main
ceteras
299.2 × 180 mm352 parts2LMIT11
Alu
lorenzonotaro
200 × 150 mm45 parts2LNo license8
Aqua
nickbild
58.4 × 75.7 mm10 parts2LNo license6
Zenith zt1
misterblack1
221.5 × 149.5 mm140 parts2LNo license5
ALUModule
crempp
177 × 121.9 mm168 parts2LNo license4
AVR/ArduinoTCPU8-Alpha
halfburnttoast
150 × 150 mm138 partsGPL-2.04
VIO MPF I
electrickery
156 × 100.1 mm63 parts2LNo license4
Atari-1090XL-80CVC
reifsnyderb
228.6 × 139.7 mm78 parts2LGPL-2.03- schematic only · 278 parts
ARCADE
antongale
278 parts2LNo license3 
BitStack-DigiTrainer
RetroStack
320 × 150 mm262 parts2LMIT2
6809PC
danwerner21
244 × 244 mm155 parts2LNo license2
Latest-Full-Backplane
Trilobyte-CPU
100 × 100 mm146 parts4LNo license2
FloppyBird
inmbolmie
88.9 × 59.7 mm25 parts2LGPL-3.02
Esh
RulecityLLC
299.7 × 229.9 mm182 parts2LBSD-3-Clause1
Lomax ColorMagic Redux
RichCini
254 × 137.7 mm148 parts4LNo license1
Alu
jes
237.5 × 102.9 mm79 parts2LUnlicense301
Alu base
200 × 150 mm45 parts2LNo license8
SAP-Plus A and B Registers
TomNisbet
102 × 96 mm44 parts2LMIT10
HOL-1 TTL CPU - ALU board
agben
109.2 × 78.7 mm29 parts2LNo license1- schematic only · 19 parts
Microtek-Dumpling-GX
markadev
19 parts2LNo license23 
Mistrum Home Computer Modulator
Lazarus-L-o-n-g
94.6 × 18 mm18 parts2LCC-BY-NC-4.03
ACE-COLOUR2
flypie
165.1 × 114.3 mm95 parts2LGPL-3.013
Z80RAM3
lynchaj
100 × 100 mm58 parts2LNo license31
The 74LS86 in open source designs
The gallery holds 31 open source boards using the 74LS86 from 30 GitHub repositories; a typical one measures about 177 × 110 mm and carries around 79 components.
87% are two-layer designs, the rest use four layers or more, and 42% carry an open source license.
The most starred is Space Odyssey by jotego.
Parts used alongside the 74LS86
Microcontrollers on boards using the 74LS86
What boards using the 74LS86 are built for
74LS86: common questions
Where can I find a 74LS86 reference design?
Each of the 31 boards on this page is a real design using the 74LS86. 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 74LS86?
The 74LS08, 74LS04, 74LS32, 74LS02 and 74LS245 appear in the most repositories here.
Which microcontrollers do boards using the 74LS86 use?
Most are built on AVR/Arduino (2).
How big is a typical board using the 74LS86?
The median is 177 × 110 mm, and 87% are two-layer designs.
What is the most popular open source board using the 74LS86?
By GitHub stars, Space Odyssey by jotego, with 335 stars.
Can I simulate one of these boards using the 74LS86 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.