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Love this kind of stuff.

I made this slim PCB a few years ago with a super tiny NFC chip on it that can harvest energy from NFC:

Made it into a business card as you can see.

I'd love to make that as well or find a source for it. Curious as to costs to manufacture and ease of reproducibility. Any tips / pointers / guides?

Can’t find the tutorial I used but here is one https://reddit.com/r/electronics/comments/efz9xf/my_nfc_powe...

I found this one: https://www.instructables.com/PCB-Business-Card-With-NFC/ Looks closer to yours? Not sure how you did the 24k gold part tho ;)

Yes, that’s the one I used afaik. The gold is one of the materials you can choose to plate your copper on the board at manufacturing. “Enig”. Increases conductivity but also looks sexy :D I think every board was $8 on MOQ.

awesome - thanks - going to pull this together!

now use that energy to mine bitcoin and you'll be rolling in ~~money~~ decimal places before you know it!

A big ass inductor sucking up all phone batteries from the whole neighbourhood. On it.

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