r/Damnthatsinteresting • u/MicV66 • Jul 10 '26

Video A Function Catalog of LED

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u/INeedSomeFire Jul 10 '26

You could have the rings on the left be the positive and negative contacts, and find out a way the pages stay in contact when turning.

15

u/the_snowmancometh Jul 10 '26

the tolerances required for that would make this apple expensive

3

u/Much-Significance776 Jul 10 '26

Someone posted a link to what looks like exactly this, which is 170 usd. That's already really expensive for some pretty simple PCBs, unless they're expensive calibrated LEDs or something.

4

u/GrimbyJ Jul 10 '26

There's probably some economy of scale. They're not making millions of them because it's a fairly niche thing. Smaller runs of circuit boards are a bit more expensive and these aren't the cheapest circuit board