14 open source boards using the 74HC166
Real designs built with the 74HC166, 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.
Minimal-64x4-Home-Computer
slu4coder
245.1 × 160 mm134 parts2LNo license323
Minimal-64-Home-Computer
306.1 × 130.2 mm127 parts2LNo license93
AVR/Arduino6502-Computer
The-Invent0r
188.3 × 114.3 mm34 parts2LNo license31
FellaPC
agkaminski
284.9 × 96.5 mm107 parts2LCC0-1.02
ESP32Aquarius plus
aquarius-plus
167 × 115 mm210 parts2LMIT1
Zak180
188 × 128.3 mm128 parts4LCC-BY-NC-4.00
ZAK181
215.3 × 96.8 mm111 parts4LCC-BY-NC-4.00
AVR/Arduino6502 Computer
DomAtTheShack
216.6 × 144 mm74 parts2LNo license0
AVR/ArduinoDuPal DIP
DuPAL-PAL-DUmper
113 × 78.7 mm50 parts2LCC-BY-SA-4.057
74 Character Generator
rjhelms
124.5 × 99.1 mm77 parts4LNo license2
AVR/ArduinoVga
129.5 × 74.2 mm36 parts2LNo license1
AVR/Arduino6502 DebugBoard
199.6 × 114.2 mm64 parts2LNo license0
Pico vdu
zuiko21
97.8 × 72.4 mm43 parts2LMIT23
6502 Video Card Pro
acwright
100 × 57.6 mm20 parts2LCERN-OHL-P-2.047
The 74HC166 in open source designs
The gallery holds 14 open source boards using the 74HC166 from 13 GitHub repositories; a typical one measures about 188.2 × 106.6 mm and carries around 76 components.
79% are two-layer designs, the rest use four layers or more, and 36% carry an open source license.
The most starred is Minimal-64x4-Home-Computer by slu4coder.
Parts used alongside the 74HC166
Microcontrollers on boards using the 74HC166
What boards using the 74HC166 are built for
74HC166: common questions
Where can I find a 74HC166 reference design?
Each of the 14 boards on this page is a real design using the 74HC166. 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 74HC166?
The 74HC00, 74HC138, 74HC245, 74HC02 and 74HC32 appear in the most repositories here.
Which microcontrollers do boards using the 74HC166 use?
Most are built on AVR/Arduino (5) and ESP32 (1).
How big is a typical board using the 74HC166?
The median is 188.2 × 106.6 mm, and 79% are two-layer designs.
What is the most popular open source board using the 74HC166?
By GitHub stars, Minimal-64x4-Home-Computer by slu4coder, with 323 stars.
Can I simulate one of these boards using the 74HC166 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.