Amateur electronics in danger due to lack of DIP ICs

Spehro Pefhany wrote in news: snipped-for-privacy@4ax.com:

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It is an off the shelf powder coated Aluminum extrusion enclosure with a custom silk screen logo on it that may or may not be a baked on enamel. The end plates are what get customized.

It does look nice though. Depend on what your production numbers are expected to be for the products life cycle.

Reply to
DecadentLinuxUserNumeroUno
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On a sunny day (Sun, 28 Feb 2021 22:16:18 -0000 (UTC)) it happened Jim Jackson wrote in :

I followed that advice after consulting in the raspi group. The effect was that lots of stuff and dependencies got updated then z bad sound solution was replacing the old alsa, and no more sound in chrome browser, long list of shit, my software expected alsa. It is ABSURD That raspi club has lost all sense of compatibility. And keep in mind that the system I am running on the Pi4 4G is absolutely different from the original distro, hundreds of apps and scripts that then all have to be modified. What a bunch of idiots, all for 4 GB extra RAM!!!!

I have several pi1 in use 24/7, one as router with a Huawei 4G stick in it. None of the cards / images will work in later models.

I did (after a google), still chrome audio does not work.

Now using that expensive (eh) PI4B 8GB with a rtl-sdr stick in it to run dump1090 something that just as well runs on a Pi1, or with my spectrum analyzer software as the ratspi does noting else that speed is nice, but it does not need 8GB RAM of course. THAT is the word!! RATSPI reminds me of rathead

For me raspberry is of the past. It has become a bunch of dilettante clowns putting out one thing after the other without an in depth knowledge of the OS, Unix, the hardware and what people who REALLY want a small computer would expect. For them many others. Not even to mention all the power fixes in the EEPROM...

Sure I also have /dev/dsp on all my Linux machines.

This laptop I am using to write this runs Slackware. It (Slackware) is a one man band and internally consistent. Nearly everything that came after the original install is compiled from source. Many bad things that came later in Linux are not on this laptop. panteltje20: ~ # uname -a Linux panteltje20 2.6.37.6 #3 SMP Sat Apr 9 22:49:32 CDT 2011 x86_64 Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz GenuineIntel GNU/Linux

I have replaced xorg with xfree on some PCs.

Windows is a joke, it became a joke with win98, on the older one you could run win 3.1 on DR DOS :-) I moved to Linux in 1998 with SLS linux (SLS nothing to do with NASA, was 'Soft Landing Systems') and never went back, somebody talked me into trying some windows version later but removed it almost immediately.

I have written more Linux soft and open sourced it than most. This Newsreader (see headers) is one for example. Some soft I wrote is used all over planet earth, have nit heard about other planets yet, aks ET Of course libforms was screwed up by the maintainer so had to fix that myself and make a new library so I could run NewsFleX and a hundred other GUI programs I wrote on for example the ratpis. Yes that was the Debian lib version screwed up, poor maintainer never imagined somebody using middle and right mouse button for example.

Kids with no clue screwing up libraries is the normal these days it seems. Same develop new languages if they refuse to learn or are unable to understand the old ones. Python comes to mind

Whinger ? No I speak out a warning to go into raspberry, sorry if you are an UK brexit slave and want incompatibility.

Now about that virus and the lock-downs, RESIST! And do not get yourself killed with mRNA vaccines it is all about killing the older generation.

Clear?

Reply to
Jan Panteltje

On a sunny day (Mon, 1 Mar 2021 00:05:27 +0000 (UTC)) it happened snipped-for-privacy@decadence.org wrote in :

Interesting, does not say much about the software?

Reply to
Jan Panteltje

mandag den 1. marts 2021 kl. 01.09.47 UTC+1 skrev snipped-for-privacy@decadence.org:

or maybe it is lasered on as it said in the lines you snipped ....

Reply to
Lasse Langwadt Christensen

f stuffed into a "breadboard", is rapidly decreasing. I have not been in a position where I needed to prototype a new design (as a hobbyist) in years. But now I do and while searching for a >10MSPS A/D and a FIFO memory to us e with it I am seeing nothing available with pins. What are home builders d oing these days about this? Is there a company that will solder these surfa ce mount chips onto a small circuit board for a reasonable price? I bought one of those SSOP adapter boards and there is no way I can solder those tin y pins without bridging solder over the gap between pins. What are people d oing?

Paste Flux is the "secret sauce" that greatly reduces molten tin-lead's sur face tension, and spreads the heat more evenly so that solder won't bridge (not even fine pitch). Apply the flux paste (rosin) to the TSSOP adapter board, place the chip, then apply more flux paste. Use a clean tip, and u se just a tiny amount of solder on the corners pins, then drag the solderin g iron tip from the corners to the center pins. Even if the tip is a broad point, and bridges 2-3 pins; the solder behind it won't bridge. Not need for solder paste or hot air tool (although a hot air tool is handy if you e ven need to remove a chip). YouTube has plenty of "How To" videos on the t opic. ~TM

Reply to
Terry

Jan Panteltje wrote in news:s1i73a$1ggi$1 @gioia.aioe.org:

They run any *UX you want... even bsd.

Reply to
DecadentLinuxUserNumeroUno

Yes. It is an extrusion that we buy chopped to length and blue anodized. We get blank end plates from the same people. The end plates get cnc machined per product for connectors and LED light pipes. We laser blast the top and the end plates with our artwork. The n/c fiber laser blows away the blue anodize and leaves nice aluminum colored graphics.

We used to buy a relatively expensive Hammond box and send out for silkscreening or for custom polycarb labels, which was a pain.

The extrusion has some nice features. The top half is removable for access to the top of the board; the Hammond boxes are one piece. There is a shoulder on each side that the board bolts to (instead of inboard spacers) which provides a good heat sinking path.

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--

John Larkin      Highland Technology, Inc 

The best designs are necessarily accidental.
Reply to
jlarkin

It sounds like you did an upgrade from one version of raspbian to another version of raspbian. A simple apt upgrade should only have upgraded already installed software - not introduced new packages.

I never run standard Raspbian desktop - I install the lite version (no desktop) and then add what packages on top of that I want. When I do

apt-get update && apt-get upgrade

only the install packages with newer versions get updated. God knows what you did.

Funny that but I went from a Pi3 (not even a Pi3+) to a Pi4 (8GB) just by doing the update && upgrade thingy, and got the newer firmware and kernel and it all worked when I transfered the sd card.

God only knows what you did that made it go wrong.

much ranting deleted.

I often noticed that some people get so worked up that they stop listening to, or even seeking advice. So stay stuck is a shit situation.

Sometimes people can't be helped.

Reply to
Jim Jackson

mandag den 1. marts 2021 kl. 18.49.43 UTC+1 skrev snipped-for-privacy@decadence.org:

so just like any other ARM board, just less common and +2x the price

Reply to
Lasse Langwadt Christensen

Lasse Langwadt Christensen wrote in news:fff1b997- snipped-for-privacy@googlegroups.com:

Still an off the shelf enclosure with a custom paint job and label burn. Nothing to jump up and down about with flailing arms.

And if he uses the case to sink any heat, the paint job is actually a blanket that would slow dissipation down a bit.

Reply to
DecadentLinuxUserNumeroUno

Terry wrote in news: snipped-for-privacy@googlegroups.com:

"What are people doing" They refrain from soldering when they do it as badly as you do and get someone that can solder them onto carrier boards without bridges to wick away or use a method to fix what you broke instead of not breaking it to begin with. (read shitty soldering methods and skills) Blobby Bobby is NOT the right way. It is the way poor solder skills assemblers use to attack a problem they caused.

Reply to
DecadentLinuxUserNumeroUno

I don't like "upgrades" (of *any* software); too often, they expect things to be in a particular state. So, unless you are a plain-vanilla user, its possible/likely that YOUR box is in a state that the folks building the upgrade hadn't anticipated (though still "legitimate").

Many times, the assumptions aren't stated in the release notes.

[Adobe products are particularly annoying; do I need to install EVERY update from the initial release? Or, just the most recent?? And, do I *really* need to reboot every time the update tells me??]

Whenever I upgrade any of my *BSD boxen, it's essentially a "build from scratch" operation (not all of userland -- but, always a custom kernel and every "app" that I run) so I can *see* what problems may manifest in the process.

Historically, I've encountered builds that weren't "clean"; but, the person who *did* the published build didn't catch -- or understand? -- the issues that appeared during *his* build.

That's not intended as a bad reflection on him. Rather, an acknowledgement that when you're trying to prepare a package for a variety of different types of machine hardware and different host OS versions, you can't anticipate everything that might not be "quite right". Especially considering many of these are volunteer efforts.

[E.g., I've encountered "stock" kernels that won't boot on certain machines. Is it a flaw in the kernel? Or, rather, the fact that the release engineer didn't have one of that make/model machine on hand to test?? A few minutes parsing dmesg and tweeking a new kernel configuration and its no longer a problem (for me)]
Reply to
Don Y

No. See my post just above.

We do heat sink to the anodized extrusion. But paint would have made an infinitesimal change in theta.

--

John Larkin      Highland Technology, Inc 

The best designs are necessarily accidental.
Reply to
jlarkin

Looks sort of like the extrusion boxes I buy from San Jose Scientific:

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except for those nifty mounting shelves. I want them. Do you have to drill and tap the extrusion in order to mount the boards?

-Jim M.

Reply to
Jim MacArthur

Modern software has far to many dependencies, or pretends to, at any rate. Heck, even the machinery of figuring out the dependencies has too many of them.

Dependencies are evil. I sometimes rewrite things just to get rid of needing yet another library or tool.

Jeroen Belleman

Reply to
Jeroen Belleman

That looks very similar, but we pay about 1/5 that price, anodized.

We do the secondary tapping, and add a pair of bars inside.

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It's still cheaper than using the Hammond box. And much nicer.

--

John Larkin      Highland Technology, Inc 

The best designs are necessarily accidental.
Reply to
jlarkin

Jim Jackson wrote in news: snipped-for-privacy@iridium.wf2df:

The why are you making presumptions about what he did?

The reason was already described. Maybe something else your presumptuous mind glossed over.

Reply to
DecadentLinuxUserNumeroUno

Lasse Langwadt Christensen wrote in news: snipped-for-privacy@googlegroups.com:

Examine the entire site. They have several products and many of the applications I see being addressed here could use one of their embedded solutions instead of using a full mini-PC platform.

They also have an AMD64 and even Intel powered offerings. And yes, a far better engineered product tends to cost more than a generic throw togehter that folks embraced and then they made money and upgraded everything to... A generic throw together POS that way too many folks embraced.

I have no qualms about paying more for a better product.

Reply to
DecadentLinuxUserNumeroUno

snipped-for-privacy@highlandsniptechnology.com wrote in news: snipped-for-privacy@4ax.com:

Nope. It all comes down to the emissivity difference between the bare Aluminum finish and the powder coated blanket finish. And if the inside also got painted, the coupling btween the heat source component and its attachment to the sinking surface.

So, NOT "infinitesimal". Small perhaps, but not negligible and definitely measurable.

That finish is NOT "anodized Aluminum" it has been powder coated or worse a simple enamel, and neither are as emissive as the bare Aluminum is. If the extrusion clips did get anodized afterward it seems a waste as only Hard anodization would provide any user desired benefit. Chem etch is more common and often errantly referred to as "anodized" when it really isn't.

Reply to
DecadentLinuxUserNumeroUno

I don't know what box you are talking about. The pic that I posted (you snipped the link) is a semicustom box, definitely anodized.

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Feel free to snip it again and talk about something else.

Reply to
John Larkin

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