9 open source boards using the 74HC238
Real designs built with the 74HC238, 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.
Raspberry PiBmacro Base V2
KipJM
182.6 × 130.9 mm133 parts2LCERN-OHL-W-2.024
Omronkbd
zuiko21
250.8 × 130.2 mm115 parts2LMIT23
NXPCore64 LB v0.6
ageppert
85 × 170 mm136 parts2LGPL-3.016
6502Rev2
stuenkels
102 × 102 mm60 parts4LNo license11
AVR/ArduinoBzzt Keyboard Controller Board
SteveCooling
166 × 70 mm71 parts2LMIT8
ESP32Coax-Switch-Controller
custom-ds
118 × 83 mm129 parts2LGPL-3.00
Pluskbd
351.8 × 144.2 mm113 parts2LMIT23
PICNixie Clock
drewsum
200 × 50 mm266 parts2LNo license0
AVR/ArduinoLogicAnalizer
John-Lluch
148 × 70 mm98 parts4LNo license10
The 74HC238 in open source designs
The gallery holds 9 open source boards using the 74HC238 from 8 GitHub repositories; a typical one measures about 166 × 102 mm and carries around 115 components.
78% are two-layer designs, the rest use four layers or more, and 67% carry an open source license.
The most starred is Bmacro Base V2 by KipJM.
Parts used alongside the 74HC238
Microcontrollers on boards using the 74HC238
What boards using the 74HC238 are built for
74HC238: common questions
Where can I find a 74HC238 reference design?
Each of the 9 boards on this page is a real design using the 74HC238. 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 74HC238 use?
Most are built on AVR/Arduino (2), ESP32 (1), NXP (1) and PIC (1).
How big is a typical board using the 74HC238?
The median is 166 × 102 mm, and 78% are two-layer designs.
What is the most popular open source board using the 74HC238?
By GitHub stars, Bmacro Base V2 by KipJM, with 24 stars.
Can I simulate one of these boards using the 74HC238 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.