8 open source boards using the 4081
Real designs built with the 4081, 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.
SNES-FeRAM-Cart
soniccd123
98.5 × 79.5 mm19 parts2LNo license87
AVR/ArduinoMain board
m0xpd
108 × 88 mm124 parts2LCC-BY-SA-4.025
Euclid Main Board
78 × 108 mm128 parts2LCC-BY-SA-4.07
STM32Sensored-3-P-BLDC-Closed-Loop-V1
g-rahul
100 × 100 mm114 parts2LNo license5
Ampmeter clock
Sirawit7205
100 × 100 mm147 parts4LCERN-OHL-S-2.04
STM32RyanShalini SmartPDM
LHRIC
149.7 × 158.4 mm235 parts4LNo license2
BSPD +
formulaslug
160 × 124.7 mm137 parts2LNo license2
1802-Mini-Pixie-Video
dmadole
100 × 100 mm49 parts2LGPL-3.02
The 4081 in open source designs
The gallery holds 8 open source boards using the 4081 from 8 GitHub repositories; a typical one measures about 100 × 100 mm and carries around 126 components.
75% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is SNES-FeRAM-Cart by soniccd123.
Microcontrollers on boards using the 4081
What boards using the 4081 are built for
4081: common questions
Where can I find a 4081 reference design?
Each of the 8 boards on this page is a real design using the 4081. 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 4081?
The 4001, 40106 and 4013 appear in the most repositories here.
Which microcontrollers do boards using the 4081 use?
Most are built on STM32 (2) and AVR/Arduino (1).
How big is a typical board using the 4081?
The median is 100 × 100 mm, and 75% are two-layer designs.
What is the most popular open source board using the 4081?
By GitHub stars, SNES-FeRAM-Cart by soniccd123, with 87 stars.
Can I simulate one of these boards using the 4081 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.