pouët.net

Folks, could you please share with me some demos you know that would survive being snail-mailed on a printed postcard (via QR code, "tweetcode" style PICO8 code, or a different method I don't know yet) or are specifically designed to be mailed this way?

I'm thinking of assembling a list for these - I recall getting a postcard with a demo during one of the Christmas Card Exchanges, and I was really awed by it. (Can't recall which one, sadly, since my postcard archive is currently elsewhere.)

Thanks in advance for enlightening an ignorant newbie!

Anything <=1kB could be encoded as a QR-Code, just do it.
The more interesting question is how you then get that data from your phone to the destination device.

And once someone's built a tool for "QR-code to Amiga adf" you might just as well let the QR contain a link and then we're back to downloading arbitrarily-sized files.

I guess many here are old enough to remember typing in long series of hex bytes (or lines of BASIC) from a magazine…

DATA ERROR BETWEEN LINES 10200 AND 10800

I somehow like the idea of a completely self-contained piece.
Preferably solid enough to weather the rough times we have.


You better type in the checksummer first! ;)
From today's perspective a hex listing wouldn't be far off from a QR code...

Technically, a "pop-up book" style postcard would be fully self-contained without requiring any power...

(compiling it would be a pita, though)

how about hand-written glsl shader or asm code?

AH ! FINALLY ! SHAAAAADERS ! :D ... I was getting worried.
There's nothing more demoish and display-hacky than 300 chars golfed into pure, rock-solid logos !

Check these aliases on Shadertoy for examples :
Xor, mrange, diatribes, FabriceNeyret2, GregRostami, and maaaaany others.

Will do! Thank you, Tom & 100bit! Really glad I decided to ask.

I converted shaders into barrier-grid animated postcards, does that count? https://github.com/mrange/shader-advent-2024/blob/main/day-03/README.md

I say that very much counts, pestis! Thank you for posting it here too!
Shame I never got that card from you during the Card Exchange - I was positively jealous at the photos.

could be a song to copy and paste in https://strudel.cc

There has been cool 3D and holographic card effects from Silvia (for example with the butterfly from Return to the Nature).

Blossom & Superogue sent once a card with a hex listing of a small intro.

A few years ago, I sent a hexdump of Xmas card intro on postcards as part of that year's Demoscene Card Exchange thingy.

(sorry for the doublepost)

"Binary Eye" on F-droid allows you to copypaste a hexdump of the QR code contents. Then you can uh, send the clipboard to your computer using KDE Connect, and then "xxd -r -p" it back into a binary??