I went to the page expecting to rant about how it's not actually credit card size because of the thickness and was for once pleasantly surprised! Kudos to the author! It looks great!
What fun!<p>I’d love to also go the opposite direction, a full-sized laptop with an ESP32 running tiny386 and Windows 95 ^_^<p><a href="https://www.hackster.io/news/he-chunhui-s-tiny386-turns-the-humble-esp32-s3-into-a-fully-functional-386-powered-desktop-pc-5454cf6e36a1" rel="nofollow">https://www.hackster.io/news/he-chunhui-s-tiny386-turns-the-...</a>
> A fully working computer that is literally the size of a credit card.<p>Nit: A (chip) credit card is already a fully working computer :)
This post - the title made me remember ... ( as a credit card is about the same size as a business card )<p>A Linux Business Card CD is a miniature, credit-card-sized optical disc containing a stripped-down, bootable Linux operating system. They hold around 50MB to 100MB of data and were highly popular in the early-to-mid 2000s<p>More info at
<a href="https://en.wikipedia.org/wiki/Bootable_business_card" rel="nofollow">https://en.wikipedia.org/wiki/Bootable_business_card</a>
Or the Rex 6000 or other PCMCIA cards:<p><a href="https://en.wikipedia.org/wiki/REX_6000" rel="nofollow">https://en.wikipedia.org/wiki/REX_6000</a>
yeah, also reminded me of wifi sd-cards: <a href="https://hackaday.com/2016/06/30/transcend-wifi-sd-card-is-a-tiny-linux-server/" rel="nofollow">https://hackaday.com/2016/06/30/transcend-wifi-sd-card-is-a-...</a>
These things were cool! I believe I had some drivers installed via some of them, and a Kubuntu livecd.
this is really cool. I didn't know we had these
Developer here :)<p>Just saw this and love how I got the 100th or so "Does it run DOOM?". Even now officially an issue on GitHub. Does that mean I now have to deliver?
> Does that mean I now have to deliver?
Well, if you'd like to, you're free to do so! If not, somebody else could do it. You're not your audience's slave<p>I know it was intended as a joke but still..
So... it's not DOOM-complete?<p>Teenage Alan T. would be so disappointed... :D
Hidden in here is the coolest part, that the author made flex PCBs at home
Last week (87 points, 7 comments) <a href="https://news.ycombinator.com/item?id=48251528">https://news.ycombinator.com/item?id=48251528</a>
Just in time for DEFCON. We built many of these types of badges
__This__ is where all those trusted app parts should go - a smart card with e-ink display that can provide high security assurance level and where I won't mind that it's locked down because it has only one purpose.<p>__Not__ to my smartphone, effectively preventing me from modifying the system in the name of security. A banking app can use a card like this and on the display I could for example see where a transaction would go and then I could accept it, possibly even with a biometric identification.<p>This would enable me to keep my smartphone customizable and banking apps secure at the same time.<p>[apologies for the rant]
I love these kind of projects. M5Stack Cardputer Zero launched on Kickstarter last week and already hit their goal<p><a href="https://www.kickstarter.com/projects/m5stack/cardputerzero" rel="nofollow">https://www.kickstarter.com/projects/m5stack/cardputerzero</a>
Coincidentally, the xteink x4 has the same CPU, an e-paper screen and is close to credit card sized.
Try NGK EnerCera for battery.
I would love if the screen could take up more space, even at the expense of a little extra thickness.
That actually exists, with even the same CPU but no NFC: <a href="https://www.xteink.com/products/xteink-x4" rel="nofollow">https://www.xteink.com/products/xteink-x4</a>
I think that there could be a wider screen if such formats are available. Once we have betavoltaic batteries, the entire card can be screen.
I'm not sure beta voltaics will ever reach LiPo densities. All materials I know would be unwise to place in your wallet, or anywhere near your body.<p>If we are OK with a battery <i>and</i> a beta voltaic source, a tritium one is reasonably safe and can trickle charge the battery when the device is in deep low power mode. The battery can still be charged by the induction coil.
love this. would be cool if we can see and perform all kinds of banking txns on this. Think ledger but all in one card. Super cool. Even cooler would be card to card money transfer without use of swipe machines
How do you recharge it? Do you have to swap the battery?
This is great, and I love it, and I hate to be saying this, but it's not <i>literally</i> the size of a credit card, it's 0.2mm thicker.
Fair enough, but I acknowledged that and it's 0.24mm thicker if we want to be exact. Here's a quote from my Git Repo:<p>"Official ISO7816 smartcards are specified at 0.76mm thickness, but many real-world cards slightly exceed this in practice. The target for this project was simple: Stay around ~1mm total thickness and preserve the illusion of a normal card."
It seems like it might be a little expensive for a business card...
Run Unix v6 on it :) 16 bit and works with like 80kb of ram
Can it run DOOM?
First thought: cool!
Second thought: e-waste<p>(same reaction as single-serve coffee pods, circa 2023)
Do yourself it!
I want this, but only for one thing: email.<p>I already use an pwnagotchi, and it works great for this - but its a bit bulky.<p>If I can get this set up and working, it'll be my main interface to email.
legendary
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It's not a computer.
In what way is it not a computer?
It’s got more horsepower than my first desktop computer
Your definition of "computer" is incorrect.
Right, it doesn't compute. Apologies for the lie.