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A self-powered computer in actual credit-card size (~1mm thick)

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Why This Matters

This groundbreaking prototype demonstrates that a fully functional, self-powered computer the size of a credit card is feasible, pushing the boundaries of miniaturization in electronics. While still in early stages, this innovation could inspire new compact devices and applications in wearables, IoT, and embedded systems, transforming how we think about portable technology.

Key Takeaways

For years, devices like the RbPi have been described as “credit-card sized”.

And of course the message is rather the footprint, but at some point I became obsessed with taking that idea one step further:

What would it take to build something that is literally sized like a credit card?

I've got a slight feeling that you really don't seem to like questions here, but I hope this rhetorical one is okay :P

That question slowly escalated into months of experiments to find solutions for things where default methods won't work. I can't use large, rigid components, connectors, and find a way to make my own custom flexPCB.

And after months of tinkering, I made the first prototype. Fragile, but it works within the goal of not exceeding 1 millimeter. Somehow, news pages have picked this up and described it as "revolutionary" which is a bit far fetched, but I feel flattered 🤭

To be fair, 'computer' might be a little overstatement, but it's technically perfectly within the definition of one. If you should have suitable words for it that sounds cool, feel free to suggest ^^

The prototype includes:

ESP32-C3FH4 w/ WiFi & BLE

NFC read/write

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