1 open source board using the 4021
Real designs built with the 4021, 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.
shino-hinadukiThe 4021 in open source designs
The gallery holds 1 open source boards using the 4021 from 1 GitHub repository; a typical one measures about 100 × 100 mm and carries around 108 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Chisel nes by shino-hinaduki.
What boards using the 4021 are built for
4021: common questions
Where can I find a 4021 reference design?
Each of the 1 boards on this page is a real design using the 4021. 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 4021?
The median is 100 × 100 mm, and 100% are two-layer designs.
What is the most popular open source board using the 4021?
By GitHub stars, Chisel nes by shino-hinaduki, with 4 stars.
Can I simulate one of these boards using the 4021 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.