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Can someone tell me if they know researchs about "electronic but with only easy to obtain materials"?

Like only silicium/common metals/easily recyclable stuff...

Interested to know how a tiny community can fulfill its electronics needs without relying on big international imports (sort of impossible if you're an individual / without relying on a big company)

Boost? :3

@Miaourt How common do you want to go? Remember that pure Silicone crystals must be doped with something like Gallium in order to be useful in electronics. I would imagine the "community" would not be able to progress beyond a de Forest tube. You still have to have a high grade metallurgy in order to make metal parts of it, especially cathodes.

@Miaourt
It's still gonna need a lot of research, but quantum dot-based semiconductors look promising for simplifying fabrication, so it could create the possibility of lots of little fabs instead of a few big ones. Also look up 3d printed circuitboards. There are even projects on Instructables: instructables.com/id/3D-Printi

@Miaourt
There has also been a lot of interest in using older fab processes with used equipment, but apparently the demand for chips is still growing so fast that the equipment usually ends up getting used until it's totally unserviceable.

You could certainly ditch at least Intel etc and go for chips from smaller companies.

@Miaourt
The folks at sunbeam.cafe might be interested in this question... sustainable localized electronics is Important Hard Stuff.

@Miaourt Be aware that attempting to do this may involve serious environmental tradeoffs. The materials and manufacturing methods that are easy to use may be more toxic and will certainly be far more energy-consuming (both during manufacturing and for the products once in use) than current state-of-the-art that can only be done in large factories. I'm not sure I would advocate such an initiative for this reason. If your goal is political instead of environmental, that's another story.

@Miaourt@niu. Some hobbyists in Japan are doing interesting stuff with e.g. homemade vacuum tubes. I can dig out some Twitter links if you want but they'll be mostly Japanese-language. I myself have written a bit on environmental impact of electronics (but not from the point of view of "local"; as I say I'm not at all sure that is better in this context) and am working now on a series of articles about homemade solder flux (very narrow focus, but maybe interesting).

If you aren't willing to buy chips from a factory, and aren't willing to burn multiple entire human careers' worth of labour to construct a room-sized computer like ENIAC, then you basically are restricted to what you can do with a few dozen single transistors or tubes per product. That means no computers, and no communications devices more complicated than analogue television. If you look at what was available to consumers in the USA in the early 1970s that might be a reasonable target.

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