#1801

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IMSAI Guy

4 ай бұрын

Episode 1801
I need to fix a boo boo
www.pcbway.com/project/sharep...
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Пікірлер: 24

@robinbrowne5419 4 ай бұрын

That's going to be a nice project which uses the chips and nixies that you have. Too bad about the mistake but "to err is human" as the AI robots say :-) It looks like you are getting close and I look forward to seeing the gorgeous nixie tubes lit up :-)

@Gengh13 4 ай бұрын

It's late now, but if you put your blocks that are repeated in hierarchical sheets and use a plugin to replicate the layout you can save some time, not that important in this case of only 3 blocks but it can help in bigger projects.

@jimomertz 4 ай бұрын

Probably too late now, but you want to redo all those traces with acute angles. Your vcc traces most notably.

@R50_J0 4 ай бұрын

Why?

@andymouse 4 ай бұрын

Thats rubbish!!! they will embed in another trace and make a Black Hole @@VRHuh

@IMSAIGuy 4 ай бұрын

you are right, they are very cute 🐕

@jimomertz 4 ай бұрын

@@R50_J0 Because some older pcb board houses used harsh chemicals to etch away the copper. This would be trapped in the acute angle known as an acid trap. These chemicals remain after the board manufacturer and etch away the copper, possibly causing failure over time. This isn’t so much a concern anymore, but most follow this rule because it is good practice.

@IMSAIGuy 4 ай бұрын

today it is just foil on prepreg. you can do just about anything you can imagine. resources.pcb.cadence.com/blog/are-acid-traps-still-a-problem-for-pcbs-in-2019-2

@romancharak3675 4 ай бұрын

Been there, done that too. So many times ! GGRRRRRRR

@saeedkizzy 4 ай бұрын

Hello one problem I see: the address pins of PCA chip must be different from each other

@IMSAIGuy 4 ай бұрын

the final layout has the three chips in sequential addresses

@y_x2 4 ай бұрын

Is there an autorouter in your CAD?

@IMSAIGuy 4 ай бұрын

no, there is a plug in called 'freerouting' but is is terrible.

@farhadsaberi 4 ай бұрын

In this case with few components why not do autoroute? Newer version of Kicad includes the free routing tool.

@AnalogDude_ 4 ай бұрын

i also use "auto" route, depending how big the job is, it can take (multiple) months to route board perfectly. piece of pcb, art. autorouter sucks.

@IMSAIGuy 4 ай бұрын

the 'freeroute' is quite crude and I don't find it very useful. I do like a good autorouter. I have used PADS and it had a good one. They can be useful if you partially autoroute as you go. I need the functionality of selecting a group of traces and autorouting only those. sometimes just autorouting a single trace can be helpful. autorouting an entire board never ends up acceptable in my book.

@andymouse 4 ай бұрын

New versions of Kicad DO NOT include a free Autorouter, one exists as a plugin but is nothing to do with Kicad :)

@andymouse 4 ай бұрын

Also 'Real Men Don't Use Autorouters' Lol !

@jspencerg 4 ай бұрын

Thanks for showing the design iteration process, including missteps.