Copperhead - AI agent for circuit board design
Show HN: Copperhead – Hardware as Fast as Software
Copperhead is an open-source AI agent that designs, documents, and verifies printed circuit boards (PCBs). It works like pair programming, but the codebase is a circuit board. You describe a change or provide a product brief, and Copperhead edits your KiCad files, updates all related documents, and runs ERC/DRC checks until they pass. It prevents design drift by enforcing specs and keeping everything in sync. The CLI is free and open-source, with cloud and team plans for collaboration and governance. Built on KiCad and OpenSpec, it outputs standard files with no lock-in.
A loop, not a chatbot. It looks a lot like pair programming, except the codebase is a circuit board.
- vovankuvalda
How reliable was the re-import step? Once you’d placed and routed things manually in KiCad, could you ask Claude for another change without it disturbing that work? Did you need to explicitly mark which parts should stay untouched?
- seveibar
Many of the new agentic electronic design tools are KiCad-based, which is fine, but for people creating new EDA tools I'd encourage them to take a look at tscircuit (open-source, MIT). KiCad wasn't built for AI-gen with things like automatic routing/placement, supplier footprint orientation checking, connector orientation checking and other features that will be required as more people expect extensive validation for AI-generated designs. KiCad could add these things, but they've got decades of baggage and many Altium features to pull in. I'm worried that we're all getting bound by KiCad s-exprs
- mikeayles
The space is definitely heating up.
Flux.ai being the incumbent
Silixon based out of the UK have been showing demos
Quilter and DeepPCB for layout
The recent OpenAI demo...
I went the other way and pre-designed sub circuits with a set of rules that allows simple merge assembly, unfortunately I didn't have the time or budget to continue with it, but I took the constrained approach as with hardware, things can't be 99%.
The one thing I will say, is that my experience of hardware engineers is very gatekeepy.
Any questions about the use of AI for any form of automation on forums/Reddit get shot down instantly and the OP's told 'skill issue' more or less. In my opinion, just as with software, most work is simple and should be automated, there will always be a need for the real engineering when it comes to high specification work, high volume optimisation and hardware debug (although Claude code is pretty handy at driving a Jlink)
- mlaux
While this new competency of LLMs in EDA is objectively neat, I can't help but feel a little sad about the way this is going. Electronics projects are my refuge from the new hyper-speed low-quality software world. I want to "just not use it" and continue to enjoy electronics, but if I ever want to turn one of my ideas into a product, I'll be up against people who are building extremely quickly and to a lower quality standard. Yes, potential users of a cool new gadget care about having their problems solved above all else, but I can tell this is going to turn into another field we're all here saying "what happened to craft?" about, and idk, I just don't like it. And this is coming from someone who enjoys (turn by turn) LLM-boosted programming.
- kanwisher
We are working on a similar product http://fabplane.com
Goal is to make it easy for users to remix circuits, like say you want to make a mod for a retro video game system, you can fork off of an existing mod and just change it, and we guide you through getting it printed at pcbway or jlcpcb.
- danielmorozoff
Has anyone had experience with Copperhead vs Astra and kicad? Looking for a similar tool soon
- jimberlage
This is probably not the primary way people use the tool, but if I log in (desktop, Chrome on macOS), click "Start a board" on the sidebar, and go to click any of the inputs, I can't type text in them (the inputs are "Start from an example", "What are you building", and "The brief".
- dhon_
Is copperhead related to this Copperbrain project?
https://github.com/deadbringer17/Copperbrain
They have similar names, seem to solve similar problems and both have first commit within a few days in July. One is Python and the other Typescript though and they don't seem to be forks.