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A PCB business card with a batteryless LED, powered by the phone that taps it

kevin.md

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Re: A PCB business card with a batteryless LED, powered by the phone that taps it

#15

Post by bsder »

DANmode wrote: post #12
hexapus wrote: post #6

AI:DR

[flagged]

Without a repo link to design files, I have no evidence that this project is real and not marketing copy. Sorry.

I believe it's real, but there are no artifacts to corroborate. That's a poor article.

It is sad that the internet has devolved into this state.

Re: A PCB business card with a batteryless LED, powered by the phone that taps it

#17

Post by wolvoleo »

DANmode wrote: post #12
hexapus wrote: post #6

AI:DR

[flagged]

It's a great project, just sad the author fobbed off the blog post about it to AI and made it worse by doing that.

These days it's more important for a write-up to be real than to have snazzy wording. Especially to an audience interested in this kind of topic.

Re: A PCB business card with a batteryless LED, powered by the phone that taps it

#18

Post by taylorhou »

is it possible to do this with a wearable? say jewelry? i've been fascinated with the whole digital to physical world dislocation and this inspires me to dust off an old idea of around the world "collecting" passport stamps but the only way to actually collect them is by a physical tap. similarly, i can see jewelry that lights up upon being tapped by a phone or together. fun

Re: A PCB business card with a batteryless LED, powered by the phone that taps it

#19

Post by mzi »

gnabgib wrote: post #5
thekevintang wrote: post #2

Author here. One thing that didn't make it into the post: there are no hand-drawn traces on this board. I find mouse-driven PCB layout maddening, so the whole card is a Python script driving KiCad's API—antenna coil, lettering, everything. Retuning the antenna meant changing one number and re-running the script, which as a hardware novice was the difference between finishing this and giving up. The chip is NXP's NTAG…

That made the post? Everything in your comment is in the post, AI summaries aren't very popular. > I designed the whole board as code, which I’d recommend to anyone who, like me, finds dragging traces around with a mouse maddening. KiCad—the free PCB tool—has a Python API, so the entire card is generated by a script.

My guess is that the whole project including the selection of chips was made by an AI.
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