A proper wire-harness visualizer would run in place of pcbnew in Kicad. A harness still has a schematic (albeit usually without components in it), and then the physical instantiation of that schematic has properties like trace width, er, wire gauge and stuff. It has an orderable BoM just like a board. If you decide that a particular pinning would be easier, you should be able to back-propagate the changes from the harness up to the schematic. All these things already exist in Kicad.

This would allow some sheets of a Kicad schematic to be the boards/modules, and some sheets to be the harness that connects them, and only the physical boards/harnesses would differ.

(I've used both WireViz and RapidHarness and while the latter sucks less, they both suck. Being completely outside my existing EDA worklfow is not a feature.)

WireViz creator here!

Be the change you want to see in the world :-) Having WireViz integrated into KiCad, with a dedicated GUI, would be amazing!

WireViz is great, are there similar tools for other areas?

I tried to find a good way to illustrate packets in a simple protocol and went for the bytefield package for latex (pdf manual https://texdoc.org/serve/bytefield.pdf/0 ). It is a bit heavy, as if requiring latex wasn't heavy enough, so at first I dismissed it and thought there would be something simpler. But I couldn't find anything else that I liked so I stuck with it and think it was worthwhile in the end, the output looks great and is very clear.

There's https://wavedrom.com for digital timing diagrams, not exactly the type of diagram you want but still useful.

There is nwdiag which is part of blockdiag: http://blockdiag.com/en/nwdiag/index.html

Unfortunately, it seems the package is abandoned with the maintainer being unresponsive. But I've been using it within Sphinx to generate some documentation for a Bluetooth protocol, and it generates pretty useful diagrams.

Quite a few years ago I wrote a tool as a university project that can extract C (and to a lesser degree C++ and Pascal) struct definitions from DWARF debug symbols and output VHDL or LaTeX/TikZ diagrams: https://gitlab.cs.fau.de/arw/st

bytefield-svg is an npm package: https://github.com/Deep-Symmetry/bytefield-svg

WaveDrom also have a package for making bitfield diagrams (https://github.com/wavedrom/bitfield). Has anyone used both of these? I'd be interested to see how they compare.

I've been looking for the same, and the closest I've come to is the protocol utility & the more-maintained protocol-go re-implementation.

https://www.luismg.com/protocol/ https://github.com/ryungmin/protocol-go

Wire harness docs: a creation process so painful that hand editing YAML is an improvement. XD

RapidHarness is a paid alternative that makes some pieces easier - particularly sourcing and 3D visualization. It’s the Altium to Wireviz’s Kicad.

I'd never seen RapidHarness before, thank you!

I use this often for documenting cables. Every time some EE decides to rearrange the SWD pin order on a new board I make a new diagram and a new cable.

I wrote an integration to make this available as part of kroki, if anyone wants to use this as a service.

hey there, how can i check out this integration?

I think https://kroki.io/ deserves its own submission.

Your wish showing up in the face of a submission just 14 days ago and then another 29 days ago must be indicative of why there are so many dupes all the time: https://news.ycombinator.com/from?site=kroki.io

You can feel free to submit the GH repo, as that one doesn't seem to have been submitted before https://github.com/yuzutech/kroki

This is great, thank you. I wish there was a way to activate "zen mode" in the URL so that it could be bookmarked

This looks really nice! Something my staff would definitely appreciate, especially the ability to 'version' the text file (even if it's just different copies of yaml files in a directory). But the deployment aspect is a non-starter, I just can't tell my staff "install (the correct version of) graphviz (for your OS), then install (the correct version of) python, then run it from the commandline giving the yaml file as an argument". At minimum it'd have to be a standalone executable, and running it would need to be simplified, maybe not with a real GUI but perhaps "drop the yaml file on the executable" would suffice.

Perhaps I could rig up an internal webapp where a user could submit/post a file from an html form and it would download the resulting image, but that'd be a bit of a clunky process for the user.

Put everything into a docker container? That’s about as close to a single executable as you’ll get without a ground up re write or some other non trivial engineering.

I use pyinstaller to create executables for a few python programs that my coworkers want to use

Does anyone know of a similar tool for complete wiring of a system?

www.dad.net.au

The UI is terrible, concept is good, but it is basically a ported node graph - system defined by nodes and interconnections.

I have used it to design entire industrial plant facilities.

I have been working on a Qt version on and off for a while, not sure if it will be personal use or see the light of day.

RapidHarness is good, although it's paid. If you're at a university, they sometimes provide educational licenses for free if you ask nicely.

RapidHarness is good, although it's paid. If you're at a university, they sometimes provide educational licenses for free if you ask nicely.

Do you mean like a block diagram? You might have to be more specific about the type of job you're working on.

Does it depict twisted pairs? Often needed to disambiguate colors.

I think it doesn’t out of the box, but there are forks/patches that do.

I just saw reference to WireViz the other day in a video by someone making a pick and place machine. The video describes WireViz’s use and how they went from an internal process to a vendor for making the harnesses:

https://youtu.be/CbZXuFmViiQ

Can anyone recommend some business that would make harnesses from such a specification?

Your search term would be "wiring harness manufacturer". I've not come across anyone in this space that would take a web order like PCB fabricators unfortunately, the demand isn't there.

If you need wiring harnesses or other cable assemblies you'd usually make them yourself, buy a COTS cable that is close enough and make your design match that or bite the bullet and go to a fabricator and pay expensive Non Recurring Engineering (NRE) costs. Anyone good will have an IPC-A-620 certificate.

Unless you're Toyota, its probably worth buying your own set of crimp tools rather than going down this route. WireViz is a great tool for documenting cables for your own purposes, but is only part of what would make up a full drawing pack for a wire harness.

> its probably worth buying your own set of crimp tools

I used to make a product that required a wire harness with about 50 conductors (TBF, half of them were Ground). I'm not Toyota, just some dude in a basement, but I found an outfit that would cut to length & strip wire and crimp on the terminals I specified, for less than it cost me to just buy the wire myself. Economies of scale FTW! Unfortunately, that company was bought by another and they no longer make wire assemblies for outside businesses.

Crimping wires in bulk reliably is slow and time consuming if you're doing it by hand, even with the right tools (expensive too). It's generally better to have a supplier with automated tools do it: even the terminal manufacturers seem to think of their manual tooling as second-class citizens. Digi-key has a pretty wide selection of off the shelf crimped wires; I think Pololu does also.

Like you said, there's not a lot of demand and it seems like the harness manufacturers are dying off.

A particularly well-known example in the German automotive industry is Leoni [1], they mostly make wiring harnesses for vehicles, but also for one-shot projects (e.g. spare parts for long-since discontinued models). Bit pricey from what I hear, but if you have a need just contact them.

[1] https://www.leoni-special-vehicles.com/de/produkte/

https://www.yourspec.com/ This company will do custom harnesses but AFAIK they don't support any external formats, although they do have their own online editor.

I haven't worked with them, but lcsc also does this: https://www.lcsc.com/customcables/landingPage

I heard good stuff about Dirty Cables: https://dirtypcbs.com/store/cables

Call your quick-turn CM. A lot of them do cable harnesses also.

This is the third time I’ve seen this in 3 days. I guess it’s hit connecting consciousness in the community.

Do you have a related project "WireWiz"? Was that the original name? (Ctrl-F on your README :)

Thanks for sharing! I should use this to replace my hand drawn diagrams for various cars over the years.

I never thought I'd see a perfect use for YAML. This is fantastic.

Yeah, this is excellent. Useful for multiple disciplines too.

This is super neat but am I the only one kind of disappointed it's not an extension of markdown like mermaid charts? Itd be neat to be able to share these on GitHub and have them render directly in projects

I don't think mermaid or similar are extensions of markdown. They are standalone notations that a markdown editor may implement/render.