Toots for gvy_dvpont@mastodon.social account

Written by Guy Dupont on 2025-01-22 at 17:52

was very excited to see my friend

@anu1905 pop up as the first result when I googled "lenticular QR code" 😀

https://anu1905.medium.com/lenticular-crochet-1d5ec1b48d99

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Written by Guy Dupont on 2025-01-22 at 17:49

Wrote a script to interleave SVG layers, this is what the resulting print looks like before and after adding the lenticular lens

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Written by Guy Dupont on 2025-01-22 at 17:48

Playing with the idea of "different perspectives on the same story"!

A QR code that sends you to a different source based on the angle.

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Written by Guy Dupont on 2025-01-21 at 15:16

Already got called out for the first two passwords being the same. Troubling, but we are putting our best guys on it. Rest assured, I literally made hundreds of these

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Written by Guy Dupont on 2025-01-21 at 14:52

Still using sticky notes with insecure passwords written on them to remember your creds?

What if I told you you could get sticky notes with SECURE, unique passwords pre-printed on them??

Introducing ✨Forti-flyers✨

We pick 'em, you stick 'em

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Written by Guy Dupont on 2025-01-20 at 16:57

Made a synthetic fingerprint generator that runs in the browser! You can download them as SVGs. Used a 20-year-old algo called SFinGe that hasn't gotten much love these days. I think they look really goood!!!!

Check it out here: https://dupontgu.github.io/sythetic-fingerprints-web/

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Written by Guy Dupont on 2025-01-18 at 12:29

Project prompt for electronics masto:

How would you build the Yes/No button from Bluey?

It's a keychain with two buttons. Press the 'Y' button and a voice says "Yes", the 'N' button triggers a "No" sample.

(I'm not actually going to build one, I'm curious about how you'd go about this in 2025)

In use: https://youtu.be/aheP5XuQqPo?si=YVEevCPjSFSsUkzg&t=53

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Written by Guy Dupont on 2025-01-16 at 12:24

Any pen plotter people have advice for getting results with very fine (< 0.5mm) tipped pens? I feel like I'm really beating up the pen tips but as far as I can tell it's not putting THAT much pressure down. Wondering if I need smoother paper and maybe a slower speed 🤔

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Written by Guy Dupont on 2025-01-10 at 15:13

🌞 🌞 🌞

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Written by Guy Dupont on 2025-01-10 at 15:10

designed some business cards that only show my info when you're in the sun.

DO NOT contact me unless you are OUT OF OFFICE 😎

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Written by Guy Dupont on 2025-01-06 at 16:30

Just two passes: one with red and one with blue 😍

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Written by Guy Dupont on 2025-01-06 at 16:29

Crayola makes markers that change color when you overlap certain combinations. Really fun for interference patterns!

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Written by Guy Dupont on 2025-01-04 at 21:06

Last bit of Python stacks all the edge SVGs with a fixed vertical offset (which works because of the viewing angle) and then I manually fill in the faces I want drawn (like 5 mins of clicking in inkscape) - there's probably a way to automate this but I like doing a finishing pass

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Written by Guy Dupont on 2025-01-04 at 21:05

This is the strangest step - I quantize the image down to 3 colors, and then I have a script trace each of the resulting contours. So now I have SVG paths of the EDGES of the 3D object in space. This results in some duplicate paths but that all comes out in the wash

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Written by Guy Dupont on 2025-01-04 at 21:04

I then use the PyVista library to place the STL file in space and take a picture of each with virtual lighting on. I always take the snapshots from a fixed global isometric position. I use the calculated camera from the largest slice, which ensures all will be in view.

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Written by Guy Dupont on 2025-01-04 at 21:03

Then I iterate through each layer and use OpenSCAD to extrude by a given amount and recreate an STL file for each.

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Written by Guy Dupont on 2025-01-04 at 21:01

First step takes in a number of slices and runs through the STL file vertically to get cross sections, and produces an SVG for each. Here's the output:

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Written by Guy Dupont on 2025-01-04 at 21:00

Wrote a script to generate these "Iso Slice-O" drawings directly from 3D model files (with a tiiiny bit of manual SVG cleanup at the end). Ran it on some of the most popular models and I'm obsessed with the results using white ink / black paper

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Written by Guy Dupont on 2025-01-02 at 19:05

Sometimes you just gotta:

• get a 3D Object

• cut it into 2D slices

• arrange back into 3D

• print in 2D

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Written by Guy Dupont on 2024-12-31 at 12:44

Invisible ink FTW

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