Hand Drawn QR Codes

Discussion (7 Comments)Read Original on HackerNews

keane•about 2 hours ago

From the update: "Why are QR Codes with capital letters smaller than QR codes with lower-case letters?" https://shkspr.mobi/blog/2025/02/why-are-qr-codes-with-capit... (https://news.ycombinator.com/item?id=43149077)

notTooFarGone•34 minutes ago

If someone needs a gift idea:

I used something like this on a large sheet and cut it into pieces for a puzzle gift to a website where people left comments. Nowadays even easier to generate nice temporary websites for such things.

jdranczewski•18 minutes ago

I've really enjoyed reading the Grid World piece linked at the bottom of the post: https://alex.miller.garden/grid-world/

larsbrinkhoff•about 1 hour ago

I hand drew this on a whiteboard. It was a lot more work than I anticipated.

http://lars.nocrew.org/tmp/qr.png

larsbrinkhoff•about 1 hour ago

By the way, I also coded a QR symbol generator in PDP-10 assembly language.

https://github.com/PDP-10/its/blob/master/src/lars/qrcode.8

karel-3d•about 1 hour ago

One time I tried to understand the QR algorithm and I didn't understand it at all despite trying multiple times.

Maybe I can try again with the help of LLMs. Hmm not a bad idea

soblemprolver•35 minutes ago

I found this page very helpful in understanding each step of the QR code creation process. I can't say I recall it all but it would be possible to turn this into a small booklet, I guess.

https://typefully.com/DanHollick/qr-codes-T7tLlNi

Here's a HN discussion from 2022 about it.

https://news.ycombinator.com/item?id=32837565

Hand Drawn QR Codes

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Discussion (7 Comments)Read Original on HackerNews