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gnabgib
Last week (87 points, 7 comments) https://news.ycombinator.com/item?id=48251528
dang
Thanks! This project is cool enough that I think we can tolerate another thread about it, especially since that post didn't get too much frontpage time. I'll put a link to it at the top though.
voidUpdate
It seems like it might be a little expensive for a business card...
asdefghyk
This post - the title made me remember ... ( as a credit card is about the same size as a business card )

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

More info at https://en.wikipedia.org/wiki/Bootable_business_card

GJim
Business card CD ROM's were a nice idea in the day.....

.... trouble was they would often 'misfeed' when using a tray style CD Rom drive and jam in the mechanism, meaning you had to dismantle the drive to get the card out.

Understandably, this would quickly piss off people you gave the card to. This helped make the cards rather unpopular.

https://en.wikipedia.org/wiki/Shaped_compact_disc

rbanffy
I would love if the screen could take up more space, even at the expense of a little extra thickness.
mmmehulll
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
fph
How do you recharge it? Do you have to swap the battery?
aa-jv
I want this, but only for one thing: email.

I already use an pwnagotchi, and it works great for this - but its a bit bulky.

If I can get this set up and working, it'll be my main interface to email.

[dead] pslab
[flagged]
cbdevidal
What fun!

I’d love to also go the opposite direction, a full-sized laptop with an ESP32 running tiny386 and Windows 95 ^_^

https://www.hackster.io/news/he-chunhui-s-tiny386-turns-the-...

c22
This could be great if the rest of the chassis was filled with batteries.
poulpy123
The laptop is 4kg but the battery life is 6 months
sargstuff
diy 486 schematics (around year 2000)[0]. no longer available. Discription/overview[3]. :( But, current linux doesn't support 486 cpus.

Was turned into something commerical (?2002[2])[1]. Perhaps modern version would be the old AMD cyrix chips?

-------------------------

[0] : http://boole.stanford.edu/cebit/

[1] : https://megagames.com/news/matchbox-pc-smallest-world

[2] : https://ptacts.uspto.gov/ptacts/public-informations/petition...

[3] : https://www.paloaltoonline.com/morgue/monthly/1999_May_26.MI...

WithinReason
Coincidentally, the xteink x4 has the same CPU, an e-paper screen and is close to credit card sized.
NetMageSCW
If you think 1.33x1.28x7.76 times bigger is close to the same size. I don’t.
mrbluecoat
First thought: cool! Second thought: e-waste

(same reaction as single-serve coffee pods, circa 2023)

krauseler
Developer here :)

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?

abdullahkhalids
How optimal is the PCB density? Do you think there is significant room for improvement to have a smaller PCB and larger screen and/or battery?
stavros
This is great, and I love it, and I hate to be saying this, but it's not literally the size of a credit card, it's 0.2mm thicker.
frankest
Try NGK EnerCera for battery.
lxgr
> A fully working computer that is literally the size of a credit card.

Nit: A (chip) credit card is already a fully working computer :)

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z3ugma
Hidden in here is the coolest part, that the author made flex PCBs at home