2 open source boards using the 8251A
Real designs built with the 8251A, 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.
Lomax Thunder 186 Redux
RichCini
253.6 × 137.7 mm116 parts4LNo license1
Northstar SIO
abzman
76.3 × 147.3 mm46 parts2LUnlicense4
The 8251A in open source designs
The gallery holds 2 open source boards using the 8251A from 2 GitHub repositories; a typical one measures about 165 × 142.5 mm and carries around 81 components.
50% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is Northstar SIO by abzman.
8251A: common questions
Where can I find a 8251A reference design?
Each of the 2 boards on this page is a real design using the 8251A. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
How big is a typical board using the 8251A?
The median is 165 × 142.5 mm, and 50% are two-layer designs.
What is the most popular open source board using the 8251A?
By GitHub stars, Northstar SIO by abzman, with 4 stars.
Can I simulate one of these boards using the 8251A 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.