Awesome Kicad Routing Assistance
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- เผยแพร่เมื่อ 15 ก.พ. 2023
- Found a great trick that really helps while routing PCBs with Kicad. I didn't know this was possible but you can colour wires by net class, which really rocks. There are a couple of downsides but I think it's a tool well worth leveraging. Check it out and let me know what you think, if you knew about this already (how'd you find out?) and if you have any tips to share!
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Cheers Pat, I installed KiCad 7 yesterday, it is nice to see so many improvements, I love it! Thanks for sharing your experience!
Sweet! I can't wait to get deeper into 7's improvements, but am waiting to finish up on a couple of ongoing projects. Let me know if you find anything particularly cool or useful, and thanks for the feedback.
Great video, short, sweet, useful.
Hey, many thanks! I'm all about the useful, and sometimes the sweet. The short, I still have trouble with--editing a video right this minute, and the youtube stats are going to take a hit... call it "chock full of info"? heh.
Anyhow, thanks again for the feedback: makes the effort worthwhile :)
Very good hint, thank you for sharing.
Hey! My pleasure--it was, to me, so unexpected and cool, had to share. Thanks for the feedback :)
4:25 click click click...creating the poor man's blinky. That's hilarious!
hah! I've actually started making my rat lines fatter (horray for new kicad) so don't need it as much, but the eye really does catch motion well. Thanks for letting me know you got a laugh out of it :)
Cool vid. Custom fonts in 7 is the game changer for me :) Cheers
Thanks! What, you didn't enjoy the one-true-font?!! Hah, seriously, that's pretty cool, but I think my game changer might be on the simulation side--haven't tried it yet but can finally do the upgrade to 7... was waiting to be out of critical phase on a couple of projects, and am doing some PCBA, but after that I'll finally get to play :)
Some of these things were in version 6 and these were great quality of life changes.
In version 7 there are even more quality of life changes like locked item shadow and even more DRC/ERC items that help save you from yourself :)
I am really liking version 7 having used it a few days.
Hey Mark! Long time no speak, how goes?
Yeah, just found out this came with 6 and, on they day I edit and put this out... 7 is released! Hah, wow.
Haven't installed it yet--I'm just finishing two projects, I always get a little conservative at this stage--but had a peek at the features. Mmmm, looking tasty! Had to look up what "locked item shadow" actually meant: oh, yes, these things will be much useful :)
Glad to hear you're giving it the thumbs up. Will wrap these up, or at least get them to fab, and then take the time to dig deeper.
@@PsychogenicTechnologies It's going well. Busy busy. Yourself?
One thing that threw me for a loop with version 7 was the changes to how netclasses are handled.
Overall I think after a few days of trying it out I think their new way is probably better.
You can add a "netclass directive label" in your schematic to assign a netclass and you can see that label.
In 6 and prior you had to label them before you could do it and so on. Basically more "quality of life" improvements.
It's not readily obvious how it works in the UI but they have written documentation on it.
Great to hear. Am, thankfully, much the same in the busy-ness dept. Liking all the quality of life improvements you've been pointing to, though it does seem I should set aside a little time to actually read up rather than the organic discovery system I've been riding on by default lately.
to see ratsnest, I hide all the layers, making sure ratsnest are ON. all the unconnected nets are shown, as ratsnest are not a part of any layer so its not hidden when you hide all layers.
Hi Rahul, thanks, that's pretty good :)
How do we do auto routing in Kicad
wOw! Really handy! Thanks
Thanks for the feedback! Also, there's a really good tip I completely missed, in the pinned comment above.
Hey man any ideas on how to deal with propagation delay in kicad?
Hi, sorry took me a while to catch this! So, yes, some ideas... but what do you care about? If it's skew between some signals on a bus--which I think is most likely--it's not too complex but also not superduper integrated (last time I played, anyhow). In short, you can use length tuning on your wires (docs.kicad.org/7.0/en/pcbnew/pcbnew.html#length_tuning )... my main technique can be summarized by:
* route all the related signals together, but with enough space between them to add serpentines later;
* if you're doing layer hops, keep all the traces doing the same thing (if you go from layer 1 to 4 for one, you do it for all), that way you don't have to worry about via lengths or changes in permitivity; and then
* get a measurement for your longest trace in a particular segment (layer) and grow the others to match using the tools
If you care about absolute signal travel times, then you have to care about the specifics of your PCB and actual trace lengths, rather than relative, though I doubt that's the case (lemme know otherwise).
Though not quite related, if you're doing something where any of this matters, you probably also need to setup controlled-Z just to get it nicely behaved, which is all about materials and trace dimensions.
That's the short version. There were some plugins available but don't know how useful and if they've kept up with the rapid changes coming from kicad these days.
How loang time that will complate?? Iam waiting almost 1 hourr but still not compalte, it must click some button to complate?
Hello! Hm, whatever it is, it should take less than 1 hour! However: could you be more specific? What is the action you are attempting, what have you done to make it happen and what do you see happening, if anything?
Hi, How to do length matching
Hello Selva, to answer your question: in the case of differential pairs, just routing them as such is often good enough. However, if you really care, then have a look at inductive-kickback.com/images/tuningTrackLength.png The first example is completely "manual style", just go "Inspect -> Net Inspector" and have a look at tracks you care about, tune accordingly. The second is using "Route -> Tune skew..." (it shouldn't be done randomly in the middle here, but the image is clearer this way) so the first part is at the beginning, and the last frame is when skew has been eliminated. I just clicked and moved mouse around to get the squiggles. For buses larger than diff pairs that are really fast and it matters... it's been a while, so I don't really know and would probably use the net inspector and a bunch of "Route -> Tune length ...".
@@PsychogenicTechnologies thanks a lot, keep doing more videos