TopoR, an EDA program developed and maintained by the Russian company Eremex:
> https://en.wikipedia.org/wiki/TopoR
"The most recognizable feature of TopoR is the absence of preferred routing directions, which results in unusual looking PCBs."
I really love things like this that break the non-technical cargo-cultish norms in a technical field. There's no electrical reason to wiggle wires around at 45 degrees, but you're looked down upon and made to feel bad if you don't. Technically, it just add parasitics.
One could claim "it's pride/art", well why constrain yourself to 45 degree lines if you're making art!?
No, but there can be various kinds of over-etch issues in corners that sharp corners make worse.
> Technically, it just add parasitics.
Depends. 2 45 degree bends is a better approximation of a smooth arc than a 90 degree sharp corner.
Yes, arcs are even better electrically and better for physical manufacturing. But they are annoying to nudge around. Note that the author of this article suggests saving the "melting" for the very end of the process, because making things all smooth and melty makes it harder to edit the board. It's a bit niche. And as a result, the software at both board fabs and for engineers deals a bit worse from CAD standpoint. And in turn, even worse from a designer point of view.
I spend a bit of time trying to minimize angles (e.g. if I can make a 30 degree turn further away going to a pad instead of a 45 degree one, that's nice-- straighter routing), spreading traces more, and teardropping.
That got to be the style and (almost) nobody changed since then.
I have zero experience with boards like what this TopoR router can create, but the sample images are chaos to my eyes and difficult to follow. That could just be what I'm used to seeing, however... but it looks like paint flung onto a canvas vs. highway lanes to me.
I would prefer some sort of "Smart EDA" that automatically understands that I want to place a switch mode power supply with X constraints here, then automatically rates resistors, capacitors, inductors, mosfets, etc and automatically picks manufactured components from mouser. I could get behind that. If the software does that part I will gladly do component placement and routing myself!
> https://web.archive.org/web/20170718184145/https://pdfs.sema...
Libre is already good enough in all ways except the fact you have to make a lot of parts yourself(Which is pretty fast, but still), for anything simple.
Anything it can't do, is probably a high budget kind of thing and you can afford the really good tools(But Libre might get there too, if it keeps going for another 5 years)
As soon as 6.0 was released we switched all future work to KiCad from Altium Designer. This after held licenses for AD going back to P-CAD days (2006, if I remember correctly) and previously using OrCAD and other professional tools. In short, I got sick and tired of sending thousands of dollars per year to Altium for them to burn the cash adding cloud-based functionality nobody I know wants at all. As a result, AD is just piled-on with bugs, issues, inconsistencies and you can pretty much expect every single update to deliver new bugs.
Anyhow, we've done several boards with KiCAD. We are not sorry at all that we made the change. Sure, it could be improved. The good news is, it will. Also, we are happy to financially contribute towards KiCad development because we know it will not go towards bullshit designed to try to sell the company to a larger company (Altium tried to attract Autodesk, and failed --ADSK probably saw the mess AD had become and backed away).
Anyhow, I think KiCad is good for probably 95%, if not 99%, of any board anyone might want to design. I go back to the early 80's for PCB design, which means that I have done some pretty advanced boards with tools that were far more primitive than KiCad.
As a side note, being able to use Python to drive aspects of KiCad is awesome. We've already created a number of useful utilities relevant to our work.
Kicad 6 feels a bit like a modernized version of Protel 99, with far less bugs too. So it is like Altium going back in time and choosing the correct development path instead of all the nonsense and disrespect for its users of the last two decades.
LibrePCB sadly doesn't have hierarhical schematics, and they've saved me a lot of time and effort. I hear Horizon EDA now has them, though, I'll have to try it.
I do find some of the routing actions in PCBnew to be a bit buggy in v6. Weird selections, and a lot of adding short trace segments where none seem to be necessary.
I also don't like having to give up the PCB and SCH diff tools that emerged around the v5 file format ecosystem. Those make working collaboratively in Kicad a breeze.
If I could wave a wand and change one thing about kicad, it would be support for parts databases. Having database managed component libraries with sourcing information stored in the db makes a ton of stuff about designing electronics easier.
I had to make a part using KiCad as well, and even that process was straightforward. I'm excited to work on my next layout project now after having used it. Bonus points for the 3D rendering mode which worked spectacularly on Ubuntu out of the box. It was very handy to visualize the finished board before assembly.
Fellow Orcad user for almost a decade; was absolutely thrilled to move to kicad.
I tried KiCad, and it seems like just getting to the starting point of beginning to route a PCB requires an enormous amount of sheer physical labor that left me with an eyestrain headache.
I'm glad we've got engineers to do this work, but I also kind of pity them, and have gained a better understanding of why projects take so long. I get it that at the end of the day, they need to be able to push a button and have a finished PCB stuffed with parts drop out of an automated machine in China. But I don't, and I think that for folks like hobbyists and hackers, going directly from a hand drawn schematic to manual layout in a simple PCB editor may still be the winning ticket.
I forced myself though to use/learn KiCad for a keyboard project. Worked. I've done another 3 or 4 new PCBs since and each one gets easier (no surprise).
I wish it had ready to use footprints (other than basic resistors, caps, etc), especially from LCSC catalogue.
I haven't tried LibrePCB though.
Automatic placement/routing would become a crutch that would prevent folks from learning what actually is necessary to design a half-decent PCB.
Folks that need auto-routing won't be aware/skilled enough to notice and fix problems before sending the design off to be fab'ed, and then will spend unnecessary amounts of time debugging a broken board only to learn what they should have before sending it off... or will grow frustrated and think the software sucks or something.
There's a lot more to PCB design than just connecting nets together, and skipping the step where you learn how to do it properly would be like refusing to learn to code and instead only want to use no-code UI widgets. It will bite you hard one day and you will lack the skillset to know why.
Besides that... auto-placement is really an impossible task, even for the "big guys" like Altium. The editor cannot possibly know what's inside the component's data sheet, or infer best practices etc. Things like this one particular switching boost converter chip requires a capacitor on the output no further than 0.2" away... etc. So any auto-placement or auto-route feature will be half-baked at it's best, even if done well.
Anyway, just thinking out loud. There's endless potentional issues with this sort of stuff, and lots of heuristics needed.
It definitely wouldn't be a shortcut tool, since all this stuff would need to be set up. It would help a lot with making rapid changes to designs, and it'd tie in very well with circuit design as code.
Did yours require labelling traces as low, med, and high frequency?
It reminds me of Boldport, who made project kits that were also works of art [0]. The funky PCB traces and shapes were all hand-drawn, I believe, rather than drawn up in a regular EDA program.
It was an interesting learning experience that brought me much closer to being able to create functional PCBs. The 45° angled traces however are just such a part of the classic aesthetic it's hard to go for something else. I'll definitely try some more exotic ones in the future.
Design Rule Checking (DRC) is a process used to identify errors and mismatches such as spacing & trace widths in a PCB design/layout.
Things like minimum/maximum trace widths, minimum/maximum via size, via types (buried, blind, tented, etc), pad size, solder mask tolerances, component separation distances, etc.
This often means you need to choose a fab before you design your board... and changing to a different fab later on might mean you have to redesign part/all of your board (particularly if you are pushing tolerances). Each fab has different abilities and requirements.
This will save you from redesign work, though realistically it's saving you from vendor lock-in and price gouging. Sierra can manufacture pretty much anything... but who can afford them?
In terms of the pictured old pcbs with rounded traces, I wonder if when applying tape "on film" or "on mylar" it was rather easy, when applying narrow fixed-width tape for a track, to bend and follow curves while doing so. Thus, I presume, one could both avoid cutting the tape at bends, and follow smooth curves already drafted by hand.
Here's what came up for me with a search for datak tape:
Markers, on the other hand... markers were perfect for that.
Horizon EDA is decent and I've heard good things about LibrePCB but not tried it.
DesignSpark PCB is also a fairly reasonable option. Certainly better than Eagle and a better UX than KiCAD. Not open source, but not limited in any way like most commercial options are.
Are most manufacturers equipped to print boards with these curves - would it impact the cost of printing?
I've been working on a web-based drc & renderer and the math to support these looks like a fun challenge.
I do wish there was some kind of central directory of plugins though.