7 open source boards using the 74LS47
Real designs built with the 74LS47, 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.
Ttl clock
skiselev
100 × 100 mm60 parts2LGPL-3.028
STM32MVCU F407
Vaaarad07
132.9 × 108.4 mm100 parts4LMIT10- schematic only · 64 parts
Squarely
Broosky
64 partsNo license2 
Summers
alfpedraza
227.7 × 133 mm249 parts2LNo license0
Digital clocks
121.4 × 130.3 mm114 parts2LNo license0
STM32F103 V2
84.4 × 79.2 mm55 parts2LMIT10
AVR/ArduinoControlStandShield
RobertPHeller
68.6 × 53.3 mm40 parts2LGPL-3.03
The 74LS47 in open source designs
The gallery holds 7 open source boards using the 74LS47 from 5 GitHub repositories; a typical one measures about 110.7 × 104.2 mm and carries around 64 components.
83% are two-layer designs, the rest use four layers or more, and 57% carry an open source license.
The most starred is Ttl clock by skiselev.
Parts used alongside the 74LS47
Microcontrollers on boards using the 74LS47
What boards using the 74LS47 are built for
74LS47: common questions
Where can I find a 74LS47 reference design?
Each of the 7 boards on this page is a real design using the 74LS47. 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 74LS47 use?
Most are built on STM32 (2) and AVR/Arduino (1).
How big is a typical board using the 74LS47?
The median is 110.7 × 104.2 mm, and 83% are two-layer designs.
What is the most popular open source board using the 74LS47?
By GitHub stars, Ttl clock by skiselev, with 28 stars.
Can I simulate one of these boards using the 74LS47 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.