Hand Drawn QR Codes

4 comments

• keane 1 hour 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 8 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.
• larsbrinkhoff 47 minutes ago
  I hand drew this on a whiteboard. It was a lot more work than I anticipated.

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

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  • larsbrinkhoff 44 minutes 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 23 minutes 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

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  • soblemprolver 9 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