Nostr notes by blinry

I'm switching to a new phone (first time using ...

2026-10-22T16:03:45Z

I'm switching to a new phone (first time using GrapheneOS (npub1kwa…e0nj))!

A learning: Signal's built-in wireless message transfer seems to be very slow – copying my 12 GB of data over would've needed several hours at least. Instead, making a local backup, copying it to the new phone via USB, and restoring from it was done in a couple of minutes.

#mathober day 21: Prime Ring One ring to contain them all, one ...

2026-10-21T19:51:31Z

In reply to nevent1q…n9tn
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#mathober day 21: Prime Ring

One ring to contain them all,
one ring to identify them,
one ring to imply them all,
and in the domain bind them.

#mathober2026 #math #abstractalgebra

#mathober day 20: Nice Vector Field What researching today's ...

2026-10-20T12:00:40Z

In reply to nevent1q…m3zz
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#mathober day 20: Nice Vector Field

What researching today's prompt feels like:

#mathober2026 #math #differentialgeometry

#mathober day 19: Orthic Triangle find all heights of a triangle, ...

2026-10-19T12:16:39Z

In reply to nevent1q…9wkq
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#mathober day 19: Orthic Triangle

find all heights of a triangle, connect their feet: orthic triangle

wear one as a child to straighten your teeth: orthodontic triangle

tool to help you find typos on a page of text: orthographic triangle

common bird classification system: ornithological triangle

seat profile that prevents hurting spines: orthopedic triangle

important doctrines after the great geometric schism: orthodox triangle

keyboard nerds love to type on these: ortholinear triangle

#mathober day 18: Biflecnodal Point Still traveling, and ...

2026-10-18T12:00:16Z

In reply to nevent1q…9ev3
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#mathober day 18: Biflecnodal Point

Still traveling, and deprioritizing making big drawings! So here's a haiku! :)

One inflection point
on top of a second one
that's a biflecnode!

#mathober2026 #math #algebraicgeometry

#mathober day 17: Dimension Invariance A coffee cup is a donut ...

2026-10-17T12:09:03Z

In reply to nevent1q…3xty
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#mathober day 17: Dimension Invariance

A coffee cup is a donut
but certainly not
a napkin
even one with a hole.

No matter how hard you
squish and stretch
R^2 and R^3 can't ever be
homeomorphic.

#mathober2026 #math #algebraictopology

#mathober day 16: Isochronous Curve There was a YouTuber called ...

2026-10-16T13:16:30Z

In reply to nevent1q…rf3a
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#mathober day 16: Isochronous Curve

There was a YouTuber called Murph
who let marbles race, and observe:
All of them, how sublime,
arrived at the same time
for the track was an isochrone curve.

#mathober2026 #math

#mathober day 15: Irredundant Here's a game for you: Select ...

2026-10-15T16:18:42Z

In reply to nevent1q…jqug
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#mathober day 15: Irredundant

Here's a game for you: Select some nodes from this graph, so that:

1. All nodes of the graph are either in your set or neighbors of your set (your set is "dominating"), and
2. You can't remove nodes from your set without losing that property (your set is "irredundant").

How small can you make your set? How big? Can you tell why?

#mathober2026 #math #graphtheory

#mathober day 14: Icositetragon A 24-sided regular polygon, ...

2026-10-14T13:11:38Z

In reply to nevent1q…0and
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#mathober day 14: Icositetragon

A 24-sided regular polygon, divided into 66 rhombs! Pop art style!

#mathober2026 #math #geometry

#mathober day 13: Standard Map Imagine a 2D pendulum in zero ...

2026-10-13T13:05:53Z

In reply to nevent1q…j63p
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#mathober day 13: Standard Map

Imagine a 2D pendulum in zero gravity. Pick an initial angle and momentum. Then, at regular intervals, "kick" the end of the pendulum forward with strength sin(angle). This is a very simple system that exhibits chaotic behavior!

If you place a dot on a diagram after each kick according to the current angle (x-axis) and momentum (y-axis), you get the "standard map". Here is an artist's impression for kick-strength 0.971635!

#mathober2026 #math #chaostheory

#mathober day 12: Reciprocal Prime Constant Add up the ...

2026-10-12T09:39:01Z

In reply to nevent1q…qzgw
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#mathober day 12: Reciprocal Prime Constant

Add up the reciprocals of all primes up to n. How far is this away from ln(ln(n)), as n gets large?

The plot of these two functions reminded me of a bridge. Can you find the constant being visualized here?

#mathober2026 #math #numbertheory

#mathober day 11: Problem of Points Two players toss coins, and ...

2026-10-11T14:16:58Z

In reply to nevent1q…hnkp
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#mathober day 11: Problem of Points

Two players toss coins, and whoever wins 5 rounds first wins the entire pot. But: Someone interrupts the game as one player has won 3 rounds, and the other one 1. How should they split the pot now?

This problem motivated our modern probability theory and the concept of the "expected value".

Here's a "tree" diagram depicting the situation I described. Can you read from it how the players should split the pot?

#mathober2026 #math #probabilitytheory

#mathober day 10: Simple Pole I learned a lot about complex ...

2026-10-10T15:47:52Z

In reply to nevent1q…zvar
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#mathober day 10: Simple Pole

I learned a lot about complex analysis today! Here's one way to visualize the function f(z) = 1/z, where z is a complex number. The height represents the real part of the result, while the hue represents the "angle" of the complex number.

This particular function has a "pole" at the origin, where it blows up to infinity. It's "simple" (has order 1), because it's "only" a 1/z blow-up. I think a 1/z^2 blow-up would have order 2?

#mathober2026 #math #complexanalysis

#mathober day 9: K-Cyclic Graph These are the twelve 7-cyclic ...

2026-10-09T09:20:01Z

In reply to nevent1q…f08t
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#mathober day 9: K-Cyclic Graph

These are the twelve 7-cyclic graphs! Start on any node, and then follow 7 edges (you can re-use edges), visiting all nodes, and start back at the beginning. These are all graphs that allow that.

#mathober2026 #math #graphtheory

#mathober day 8: Parabolic Rotation I rotated some parabolas ...

2026-10-08T10:26:41Z

In reply to nevent1q…jd8u
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#mathober day 8: Parabolic Rotation

I rotated some parabolas around their vertex, and the result reminded me of dahlias!

#mathober2026 #math

#mathober day 7: Five Circles Theorem Arrange five circles so ...

2026-10-07T11:15:24Z

In reply to nevent1q…drs9
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#mathober day 7: Five Circles Theorem

Arrange five circles so that their intersections are distributed around a sixth circle. Draw a pentagram through their second intersections. Then its tips will always also lie on the circles!

First time experimenting with #krita's watercolor brushes, happy with how that turned out. 🎨🖌️

#mathober2026 #math #geometry

#mathober day 6: Connected Topology Learned about the ...

2026-10-06T10:13:14Z

In reply to nevent1q…gw6n
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#mathober day 6: Connected Topology

Learned about the "Topologist's Sine Curve", sin(1/x), defined on (0,1], together with the origin. The question: Is it "connected"?

Turns out that it's neither path-connected (the duck can't reach the horizon) nor locally connected (no matter how small you make the "sun disk", the river that overlaps it will never be one piece) , but still "connected" (there's no gap between river + sun you could cut along). Weird!

#mathober2026 #math #topology

#mathober day 5: Inellipse Any convex pentagon has a uniquely ...

2026-10-05T09:08:38Z

In reply to nevent1q…ghm7
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#mathober day 5: Inellipse

Any convex pentagon has a uniquely determined ellipse that touches all of its sides from the inside!

For a quadrilateral, is seems that there's basically one "degree of freedom" – you can squish and stretch it!

For a triangle, there's two degrees of freedom: Rotation and squishyness (aka eccentricity).

One way to construct a pentagon's inellipse involves a pentagram, so here's a witchy diagram for the three types of shapes.

#mathober2026 #math #geometry

#mathober day 4: Linear Recurrence I played around with the ...

2026-10-04T17:46:52Z

In reply to nevent1q…k49m
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#mathober day 4: Linear Recurrence

I played around with the sequence x_n = x_{n-1} + x_{n-2} + x_{n-3}, which I later learned is called the "Tribonacci sequence"! :D

I tried a couple of ways to visualize it – here's my favorite one! Note how the side length of one square always equals the sum of the three terms in the sequence before it! You then have to copy each square once to another location to derive the size of the square three steps after it.

#mathober2026 #math

#mathober day 3: Permutation List Made in #krita, using ...

2026-10-03T10:03:21Z

In reply to nevent1q…rrvv
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#mathober day 3: Permutation List

Made in #krita, using memileo's fantastic impasto brush set! https://www.opendesktop.org/p/2161272/ (Thanks to [@mkasu](https://social.lol/@mkasu ) for the recommendation!)

#mathober2026 #math #combinatorics #grouptheory

#mathober day 2: Zebra Graph The zebra is an unorthodox chess ...

2026-10-02T10:31:45Z

In reply to nevent1q…aggl
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#mathober day 2: Zebra Graph

The zebra is an unorthodox chess piece that's a bit like the knight, but it jumps 3 by 2 squares instead of 2 by 1! A zebra graph describes all of its possible moves on a grid.

I spotted one in the wild!

#mathober2026 #math

#mathober is starting today – one math prompt per day to ...

2026-10-01T09:44:14Z

#mathober is starting today – one math prompt per day to express yourself in some way! https://www.fractalkitty.com/mathober-2026-prompts/

Day 1: "Perimeter of an Ellipse"

Calculating the perimeter requires elliptic integrals. But I learned about a pretty efficient method to approximate it, which uses the arithmetic-geometric mean!

In my drawing, all ellipses have the same perimeter! Imagine squishing and stretching a piece of wire. Coded in #p5js, then drawn using #krita.

#math #mathober2026

We did not plant any tomatoes this year. But we're having the ...

2026-09-30T12:49:47Z

We did not plant any tomatoes this year. But we're having the best tomato harvest ever:

Some of last year's fruits must've fallen on the earth and then seeded around a dozen new plants. All we needed to do is water regularly.

It feels like a gift of nature, like a little miracle! 🍅✨

I'm looking to replace some older Pixel phones in my family. ...

2026-09-28T15:45:24Z

I'm looking to replace some older Pixel phones in my family. Any advice on what Android device to pick these days?

I think I'm optimizing for long update guarantees, good battery and camera, small size, and excellent repairability, but I think I can't have all of that, right? :/

Also, has anyone given GrapheneOS devices to their family members? I'd be curious about your experiences.

Nostr event nevent1qqsqdl2jflr3kxzgveev6qnl070mvkwpsg6fv627yu7yg4wj02hz94czyz903xcr3j4juch4fxuh5x8565kwxvr3hy3tuu9nwk8vjz5xns57wdevq9q

2026-09-15T16:34:35Z

RE: https://social.lol/@brennan/117196098869036476 "Boycott ...

2026-09-02T10:15:23Z

RE: https://social.lol/@brennan/117196098869036476

"Boycott aggressively. Let people know you don't support Cloudflare, Shopify, 37signals, Dell, 1Password, Framework, Block, Coinbase, Dropbox, TapTap, and any other company enabling the spread of dangerous and harmful political ideologies that will continue to result in further violence and death. And let people know the harm these companies are actively doing."

quoting
note1lne…kzlw

Normalized Fascism in Open Source: $12 Million Given to DHH

https://brennan.day/normalized-fascism-in-open-source-12-million-given-to-dhh/

#politics #technology #opensource #foss #programming

Or like this? 🤔 ...

2026-08-29T14:32:08Z

In reply to nevent1q…rwtz
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Or like this? 🤔

OH @npub1mlm…fs7s: "Calvin Klein underwear" ...

2026-08-29T14:31:00Z

OH Piko (npub1mlm…fs7s): "Calvin Klein underwear"

What setup is everyone using for reading RSS feeds these days? ...

2026-08-28T09:47:18Z

What setup is everyone using for reading RSS feeds these days? 🛜 Yearning for simpler times today.

I'd love something that can download the articles for offline reading!

Also – I think some readers can export/import OPML files that contain your subscriptions, but is there a standardized format that also exports your read items, to preserve reading status?

Reminds me of @npub19hk…7f04, like how the ...

2026-08-27T12:22:01Z

In reply to nevent1q…jeh6
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Reminds me of Dynamicland (npub19hk…7f04), like how the https://dynamicland.org/archive/2023/Front_shelf works!

Getting ready for the first release of my tool that shows you ...

2026-08-21T12:05:20Z

In reply to nevent1q…6ply
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Getting ready for the first release of my tool that shows you your most liked/boosted toots or threads, from a Mastodon archive.

Found a fun slogan: "Discover your finest threads" 👌🧵

Still not sure about the name of the tool itself. Would like to avoid strong associations with "toots"/Mastodon, to be able to cover other ActivityPub software in the future. Here's some of my favorite ideas (multple choice):

Can you expand on how that technique works/how do it? ...

2026-08-18T07:03:53Z

In reply to nevent1q…g3mj
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Can you expand on how that technique works/how do it? cancel (npub14sj…88sz)

RE: https://chaos.social/@blinry/116370583076746993 By the way, ...

2026-08-16T11:28:32Z

In reply to nevent1q…m95h
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RE: https://chaos.social/@blinry/116370583076746993

By the way, if you're just interested in your most liked toot, you don't need some fancy Rust tool, you just need this jq oneliner! :P

quoting
note1lcv…4tjs

Run this in your Mastodon archive to get a list of your most faved toots! (Written with Piko (npub1mlm…fs7s).)

jq -r '[.orderedItems[]|select(.type=="Create")|.object]|sort_by(-.likes.totalItems)[]|"\(.published)
\(.content)
\([.attachment[]|if.mediaType|startswith("video/")then""else"" end]|join(""))

🔁 \(.shares.totalItems) ⭐ \(.likes.totalItems)
"' outbox.json>index.html

VisiData can also do some rudimentary graphs like "likes over ...

2026-08-16T11:26:27Z

In reply to nevent1q…zprk
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VisiData can also do some rudimentary graphs like "likes over time" (can you see where Twitter went 💩?) or "boosts vs likes" (I seem to get roughly 1.9 likes per boost).

As an example, here's my "most liked" Mastodon ...

2026-08-16T11:17:45Z

In reply to nevent1q…nayf
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As an example, here's my "most liked" Mastodon threads of all time!

I used my tool to create a CSV file, and then opened it in VisiData (npub1f0w…g6yv):

3) Would someone enjoy trying the current prototype, and giving ...

2026-08-16T11:11:44Z

In reply to nevent1q…7839
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3) Would someone enjoy trying the current prototype, and giving me feedback on what's missing/confusing? You can find it here: https://codeberg.org/blinry/best-thread

4) The idea is not really limited to Mastodon, but for example Pixelfed has a pretty different export format, and the Akkoma export I checked doesn't include fav/boost information. Does anyone know other Fedi export formats that do?

I'm writing a small tool that helps you find your most ...

2026-08-16T11:07:36Z

I'm writing a small tool that helps you find your most liked/boosted toots or threads, from an archive of your Mastodon account!

I wanna use it in combination with https://codeberg.org/blinry/threadcat, to find popular threads to turn into blog posts.

1) What features would you like to see in a tool like this? It already supports CSV and JSON export, any other formats? What statistics would be important for you per toot/thread?

2) I'm still thinking about a good name. tootstat? topthread? bestpost?

We're trying https://umap.openstreetmap.de on this trip, ...

2026-08-12T07:36:44Z

We're trying https://umap.openstreetmap.de on this trip, which allows you to put POIs (points of interest) on maps collaboratively! It works, it's pretty cool, but it's kinda finicky, and only available if you're online.

So I think there must be a better solution. Has someone seen OSM apps that allow you to sync POIs between multiple people?

Can someone recommend a cozy Mastodon instance for hosting bot ...

2026-08-10T09:09:57Z

Can someone recommend a cozy Mastodon instance for hosting bot accounts? Mourning botsin.space today.

Would like to give future #fedifriends bots a better home, and maybe build a nostalgia bot that retoots my old toots randomly...

"I used to be an adventurer like you..." ...

2026-08-09T11:09:47Z

"I used to be an adventurer like you..."

Here's a table that summarizes what I learned in the past ...

2026-07-28T17:23:51Z

In reply to nevent1q…uauu
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Here's a table that summarizes what I learned in the past three weeks:

Ever wished you could have multiple independent mouse cursors on ...

2026-07-28T17:19:27Z

Ever wished you could have multiple independent mouse cursors on your Linux machine? No?

Anyway, turns out Wayland supports that pretty well! Let me tell you what I learned:

https://blinry.org/multi-seat-wayland/

Alster-City, Hamburg. I liked how the clouds were reflected in ...

2026-07-22T13:44:30Z

Alster-City, Hamburg. I liked how the clouds were reflected in the windows!

I blogged about my circular LCD clock, and how you can build your ...

2026-07-09T15:38:12Z

In reply to nevent1q…er3c
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I blogged about my circular LCD clock, and how you can build your own one!

https://blinry.org/lcd-clock/

It's my birthday today! :) If you wanna gift me something, ...

2026-07-07T08:19:35Z

It's my birthday today! :)

If you wanna gift me something, you could describe an impact I've had on your life – big or small!

zeigt begeistert auf den Wortwitz

2026-06-25T13:31:29Z

In reply to nevent1q…7y75
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*zeigt begeistert auf den Wortwitz*

You're a male monarch, and your BMI is below 18? I think ...

2026-06-20T07:49:04Z

You're a male monarch, and your BMI is below 18? I think you're overthinking!

What 'ya building? :)

2026-06-09T17:21:17Z

In reply to nevent1q…7trl
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What 'ya building? :)

I've been practicing to put my face in the water every day, ...

2026-05-28T15:55:36Z

In reply to nevent1q…v3q7
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I've been practicing to put my face in the water every day, and it's getting easier.

One thing that really helped was getting swimming goggles! Not having water in my eyes helps me focus on breathing.

For practicing, I slowly graduated from the tiny warm relaxation pool to a pool used to teach swimming, and then to the 25-meter, which is often less busy.

On Monday, I managed to swim the full 25 meters in breast stroke, with my face going in the water for each stroke for the first time! 💚

I'm now in week 4 of Ruth Kazez' training plan to swim ...

2026-05-28T15:50:56Z

In reply to nevent1q…shpn
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I'm now in week 4 of Ruth Kazez' training plan to swim 1500 meters straight! It's really fun!

I made this diagram showing how the plan is structured for myself, maybe it can be useful for someone! :)

Read more about it here: https://blinry.org/visual-0-to-1500/

The circular screen arrived! It's a 7-inch one from ...

2026-05-24T09:20:35Z

In reply to nevent1q…890r
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The circular screen arrived! It's a 7-inch one from Waveshare.

Being able to livecode on my clock makes me very happy right now! :D

Implemented the minute pause of the Swiss railway clocks, thanks to Fluyar Blähkröt (npub1v66…dk4f) for the hint!

While I wait for a circular screen to arrive, here's a ...

2026-05-16T09:24:56Z

In reply to nevent1q…rltf
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While I wait for a circular screen to arrive, here's a prototype! :D

Something that would be really cool is a big, circular, ...

2026-05-12T14:29:40Z

In reply to nevent1q…s42g
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Something that would be really cool is a big, circular, high-contrast LCD/OLED display, and then writing custom clock faces for it! :3

Is someone's #aliexpress game good enough to source one? Largest I've been able to find is 7 inch: https://aliexpress.com/item/1005009248594276.html Was thinking something like 30 cm diameter?

#electronics

In our kitchen, the only device that displays the time is our ...

2026-05-12T10:51:00Z

In our kitchen, the only device that displays the time is our oven! :D

So… can anyone recommend a wall clock? A really fun/quirky/retro/nerdy one?

It would work best for us if it's (mostly) silent.

I still triggered my "out, now!" reflex a couple of ...

2026-05-08T09:11:44Z

In reply to nevent1q…sj83
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I still triggered my "out, now!" reflex a couple of times, especially when trying to go a bit deeper, and staying vertical. Gonna try practicing this every time I go swim!

Also – turns out holding my breath, closing my eyes, pinching my nose with one hand, and then diving is not a problem at all. My fear seems to be specifically about water entering my nose.

How did y'all learn how to do this?! :D

#swimming

But today, I had a good experience: I got in a small, warm pool ...

2026-05-08T09:08:59Z

In reply to nevent1q…y3jt
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But today, I had a good experience: I got in a small, warm pool and started practicing this. Carefully lowering my nose under water, while blowing bubbles from it.

It was very uncomfortable at first, but after a few attempts, I noticed how I could stay in that submerged position a bit longer than before!

So I realized that I probably *will* be able to learn this!! And that makes me super happy! :') It will be so cool once I can dive a bit!

#swimming

All my life, I've been scared to put my face in the water. ...

2026-05-08T09:01:50Z

In reply to nevent1q…s68v
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All my life, I've been scared to put my face in the water. Swimming longer distances with my face above the water was not the problem, neither deep pools or lakes.

But not being able to breathe, having water in my face, makes me panic. I have to swallow, and have to get up! I have some bad memories from swimming classes where I felt ashamed that I couldn't "keep up" with everyone else. :/

So learning front crawl or "proper" breast stroke seemed out of the question.

#swimming

Do you know the tingly feeling of being on the verge of a new ...

2026-05-08T08:53:08Z

Do you know the tingly feeling of being on the verge of a new hobby? Realizing that there's a lot to learn about that topic, being excited about entering the rabbit hole? What's the last time that has happened to you?

For me, currently, it's #swimming! 🏊 I decided to start this training program, that builds up a distance of 1.5 km over six weeks: http://ruthkazez.com/swimming/ZeroTo1mile.html

And there's a lot for me to learn indeed! I never learned to front crawl, for example…

Level 1: Wasserspender in der Stadt ist kaputt. Ich möchte das ...

2026-05-02T12:31:50Z

Level 1: Wasserspender in der Stadt ist kaputt. Ich möchte das mit dem Mängelmelder melden.

Level 2: Mängelmelde-Seite ist kaputt. Ich möchte das mit dem "Feedback"-Knopf am Rand melden.

Level 3: Der Knopf wird beim Anklicken etwas kleiner, tut aber sonst nichts.

Kennt jemand einen Mängelmeldermängelmeldermängelmelder? 🤔

I learned the basics of how to fly a (simulated) Airbus A320 this ...

2026-05-01T15:59:58Z

I learned the basics of how to fly a (simulated) Airbus A320 this week!

Going from being completely overwhelmed to knowing what some of these buttons do, was a very satisfying experience.

Taking off is easier than landing, though! 😅

#flightgear

Which email provider would you currently recommend to a family ...

2026-04-21T07:16:26Z

Which email provider would you currently recommend to a family member (if you don't want to host the emails yourself)? Low volume, couple of GB of storage. Paid options okay.

Do I spot a "human" at the end of the recording? :D

2026-04-17T07:41:05Z

In reply to nevent1q…uce0
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Do I spot a "human" at the end of the recording? :D

100 km!! Made it!!!! Okay, I hate walking now! ...

2026-04-12T10:30:35Z

In reply to nevent1q…n5vf
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100 km!! Made it!!!!

Okay, I hate walking now!

This morning, I got a Mandelhörnchen from a bakery – it's ...

2026-04-12T09:14:09Z

In reply to nevent1q…xqqj
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This morning, I got a Mandelhörnchen from a bakery – it's C-shaped and tastes like marzipan and almond! 🥰

I made the deal with myself that I could eat it at the 95 km mark!

Just made it there! \o/

I will finish! :') Can't believe it!

Really glad that I brought an umbrella! At night, someone ...

2026-04-12T06:55:58Z

In reply to nevent1q…k8n4
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Really glad that I brought an umbrella! At night, someone remarked that I looked like a glowing mushroom with the headlamp! :D

We got into a nice and long conversation, which distracted me very effectively. Thanks, Marty!

The hardest part for me was getting going again at the station at ...

2026-04-12T06:51:22Z

In reply to nevent1q…qgnh
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The hardest part for me was getting going again at the station at ~60 km, when it was dark and raining, and my entire body was hurting. But I had a look at my feet there, and they were'nt as bad as I thought!

Fourth and final food station! Time to grab some breakfast. Not ...

2026-04-12T06:46:39Z

In reply to nevent1q…8lam
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Fourth and final food station! Time to grab some breakfast. Not taking a long break here, I think I won't get up again otherwise.

Walking another 15 km seems possible! Just very, very hard.

And I will be slow. But it's a good mantra to remind me that I can take the next step!

By now I put bandaids on three blisters, and two more preventively.

Rain has stopped! Getting brighter again. I'm still walking! ...

2026-04-12T04:00:53Z

In reply to nevent1q…tpvc
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Rain has stopped! Getting brighter again. I'm still walking!

#almostahaiku

Food station #3, at 60 km! It's the only outdoor food ...

2026-04-12T00:17:15Z

In reply to nevent1q…lu5z
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Food station #3, at 60 km! It's the only *outdoor* food station, which is unfortunate, as it has started to rain! 🙃

So I'm sitting under my um-ba-rella, and rest my feet a bit. Just had two very nice calls, which kept me distracted.

I could report about various things that hurt, but I'd rather focus on other things: I just have to walk another 25 km, and then around 15, and then I'm there!

I passed the 45 km sign! My toes definitely hurt now, but in a ...

2026-04-11T21:01:36Z

In reply to nevent1q…x5uq
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I passed the 45 km sign! My toes definitely hurt now, but in a way that I hopefully can stand for a while.

Most of you in Europe will probably go to sleep soon – sleep well, you can catch up with how my hike continued tomorrow!

This will be my view for quite a while:

Food station #2, at 37 km. They had cake! It's getting dark. ...

2026-04-11T18:56:31Z

In reply to nevent1q…4qk4
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Food station #2, at 37 km. They had cake!

It's getting dark. Got my warm hat and my gloves out.

Onwards!

After chomping down a lot of food at the last food station, I ...

2026-04-11T17:21:18Z

In reply to nevent1q…dl93
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After chomping down a lot of food at the last food station, I suddenly had to visit the toilet very urgently. 😳

I found a nearby gas station, and asked whether I could use their toilet. The person behind the counter handed me a paper bin, and smirked: "Here, but empty it afterwards!" Ha ha. (He then handed me the proper toilet keys!)

Feeling better now! 😅 That's the advantage of hiking around a city: You're never far from infrastructure.

30 km! We crossed the South Elbe river, and are now following a ...

2026-04-11T17:18:50Z

In reply to nevent1q…23j7
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30 km! We crossed the South Elbe river, and are now following a couple of dikes.

At this point, I've seen several people sitting down and patching up their feet. :/ I feel okay. I mostly feel some pressure on my toes, probably because there is. :P

Other than at a running event, there's no crowd here cheering ...

2026-04-11T14:21:00Z

In reply to nevent1q…hqcc
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Other than at a running event, there's no crowd here cheering us on... but occasionally, cars drive by and honk at us! :D

It's interesting how, after 15 km, the participants have now sorted themselves pretty well by speed! There are at least two people who've pretty much accompanied me forany kilometers now.

But now I've reached the first food & water station! 😋

Oh, and important morale boost: I've passed the places where I started feeling my blisters last time – so far, without any pain! 🤞

First 10 km: Done! It's a really nice day for a hike! 🌸 ...

2026-04-11T12:47:29Z

In reply to nevent1q…5wty
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First 10 km: Done! It's a really nice day for a hike! 🌸

There's someone in a Harry Potter costume. 😳

And a couple walking behind me was in a big meta-argument about how to argue! Curious how their relationship will change over the course of the 100 km...

So, why did I get blisters that day? I think it might've been ...

2026-04-11T11:14:51Z

In reply to nevent1q…c624
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So, why did I get blisters that day? I think it might've been a combination:

It was the first warmer day of spring, and I was nervous, so I might've sweated more than usual.

And I walked *fast* in the beginning, often overtaking people in front of me, on rough terrain, which likely caused unusual forces on my feet.

So I'm not doing that today. I'll walk a leisurely pace, and adapt to the speed of the crowd!

It's a... long-distance hike, not a sprint :P

At the next food station, I asked the medics what I could do. ...

2026-04-11T11:10:01Z

In reply to nevent1q…2g6r
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At the next food station, I asked the medics what I could do. They offered to tape my feet, but that the wounds would likely get even deeper and bleed for the rest of the hike.

So I decided to abort. Which still seems like the right decision!

When I understood what the problem was, it was already too late ...

2026-04-11T11:06:38Z

In reply to nevent1q…zxgx
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When I understood what the problem was, it was already too late to react.

EdJoPaTo (npub10zm…k92y) kindly brought me some blister bandaids, but at that point, the blisters were already about as big as the bandaids...

I then adapted my foot posture for pain relief, which probably caused more friction and more blisters.

And then, the larger blisters popped, and it was all very horrible. I'm not very good at dealing with pain. :/

So, about last year's blister problem. I was very much not ...

2026-04-11T10:59:49Z

In reply to nevent1q…wmp6
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So, about last year's blister problem.

I was very much not prepared for them, because I never got blisters during my training hikes, during my marathons, or pretty much anytime in my life!

But it was probably naive to think I could never get them...

Last year, I started feeling a slight itching under my soles after the first 10 km or so. At first, I thought I'd gotten some little stones in my shoes! But I didn't find any.

Here we go!! :) 100 km. Feeling good! ...

2026-04-11T10:34:28Z

In reply to nevent1q…g8wj
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Here we go!! :) 100 km. Feeling good!

There are a lot of people with backpacks, drinking bottles and ...

2026-04-11T09:35:09Z

In reply to nevent1q…hkpv
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There are a lot of people with backpacks, drinking bottles and hiking shoes on this ferry! :D

At Landungsbrücken, there was a performer in a panda costume making cute gestures, and someone passing by said: "Look, we could've hugged this panda all day! But no, we decided to walk for 100 km! 🙃"

Oh, there's someone who has collected around 8 wristband from past Megamarsch events! 😳

The weather is a bit tricky to pack for: There will be full sun ...

2026-04-11T09:21:43Z

In reply to nevent1q…3y8m
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The weather is a bit tricky to pack for: There will be full sun for a few hours, and then a cold night. Also, one arm of *this* weather phenomenon will likely hit me tomorrow night...

So I packed sunscreen and warm clothes and rain gear, and hope that everything will work out.

On a whim, I borrowed Piko (npub1mlm…fs7s)'s small backpack to take everything with me. Switching gear on the day of the event is obviously a very bad idea, and you should never do it! 😬

Today, I'm doing another attempt at hiking 100 km around ...

2026-04-11T09:09:45Z

Today, I'm doing another attempt at hiking 100 km around Hamburg in 24 hours!

Last year, I had to abort after 30 km, due to unexpected blisters on my feet. 😖

But this time, I've brought double-layered socks, blister bandaids, new (but already worn-in) shoes, and a determination to not walk too fast early on! :) Let's see how this goes.

But first, I'm taking a ferry to the starting point! ⛴️

Say hello to `threadcat`! 🧶🐱 It's a little Rust tool ...

2026-04-10T15:56:36Z

Say hello to `threadcat`! 🧶🐱

It's a little Rust tool which takes the URL to a Mastodon thread, and converts it to a Markdown file. It also downloads all attached media files (and their alt texts)!

That way, it's really easy to get a "first draft" for a blog post from a thread you wrote!

Installation: `cargo install threadcat`

➡️ https://codeberg.org/blinry/threadcat ⬅️

Run this in your Mastodon archive to get a list of your most ...

2026-04-08T18:49:40Z

Run this in your Mastodon archive to get a list of your most faved toots! (Written with Piko (npub1mlm…fs7s).)

jq -r '[.orderedItems[]|select(.type=="Create")|.object]|sort_by(-.likes.totalItems)[]|"<a href=\"\(.url)\">\(.published)</a><div>\(.content)</div>\([.attachment[]|if.mediaType|startswith("video/")then"<video src=\".\(.url)\" width=\"300px\" controls></video>"else"<img src=\".\(.url)\" width=\"500px\">" end]|join(""))<br><br>🔁 \(.shares.totalItems) ⭐ \(.likes.totalItems)<hr>"' outbox.json>index.html

Didn't manage to get a #gpn24 ticket yesterday… maybe I ...

2026-03-30T15:28:23Z

Didn't manage to get a #gpn24 ticket yesterday… maybe I should submit a talk after all? :D

Textures of Taiwan ...

2026-03-17T10:06:48Z

Textures of Taiwan

"Don't toot!" 😬 ...

2026-03-06T02:32:28Z

In reply to nevent1q…rfeu
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"Don't toot!" 😬

More of these trees that we saw in the last days! It's the ...

2026-03-06T01:59:08Z

In reply to nevent1q…e9yw
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More of these trees that we saw in the last days! It's the Chinese banyan aka "curtain fig". And it seems that it's sometimes actively used to stabilize slopes!

The trees are working really hard at reclaiming the city here! ...

2026-03-06T01:55:23Z

In reply to nevent1q…vxmv
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The trees are working really hard at reclaiming the city here!

This is 青洲 – Green Island! ...

2026-03-06T01:52:37Z

In reply to nevent1q…9xtn
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This is 青洲 – Green Island!

Today, I'll start walking along the coast of Hong Kong ...

2026-03-06T01:33:35Z

Today, I'll start walking along the coast of Hong Kong Island, and see how far I'll get! :D

Starting in Western District, which is bustling and densely-populated.

Ohh, what's this? A real #Linux for smartphones? Running a ...

2026-02-27T13:16:50Z

Ohh, what's this? A real #Linux for smartphones?

Running a recent mainline kernel, even though the hardware is almost 10 years old?

An alternative to #Android that's gaining a lot of traction?

Developed in the open by an international community? Sounds too good to be true!

[@postmarketOS](https://social.treehouse.systems/@postmarketOS )

We added a new feature to our "Fedi Friends" bot: If a ...

2026-02-19T20:49:24Z

In reply to nevent1q…qpax
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We added a new feature to our "Fedi Friends" bot:

If a match every week feels like too much, you can now set a lower matching frequency, using "/freq monthly" or "/freq fortnightly"!

https://codeberg.org/Piko/fedi-matchmaker-bot

On that note – we have room for ~5-10 more beta testers! Anyone wants to join in?

(The concept: Follow a certain bot account to participate. It will regularly match you with another participating person. You then schedule a call and get to know each other a bit.)

Piko (npub1mlm…fs7s)

Remember the "One Laptop Per Child" project, that ...

2026-02-19T13:54:02Z

Remember the "One Laptop Per Child" project, that developed a low-cost computer for children in developing countries? I was always amazed by a certain feature: The "View Source" button.

When you pressed it, the source code for the currently running application would open. This was supposed to encourage tinkering with the software on your device! <3

I've been pondering what it would take to build that button on modern machines. Has anyone seen something like that?

(Prototype in next toot.)

Here's a thread of cool things I found exploring the #Firefox ...

2026-02-15T14:33:50Z

Here's a thread of cool things I found exploring the #Firefox Developer Tools!

First, a really convenient thing: You can "pop out" the Toolbox into a separate window!

To do this, open the Toolbox (using F12), click on the ellipsis menu on the right, and select "Separate Window".

I like this much better than the default "docked" modes, especially when using a scrolling window manager like #niri!

#webdev #devtools

If you're ever short on numbers, here's some: ...

2026-02-13T12:30:30Z

If you're ever short on numbers, here's some:

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

("You can help by editing the page to add missing items"!)

As a bonus, here's "Bad Apple", rendered as a ...

2026-01-20T12:05:31Z

In reply to nevent1q…anvs
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As a bonus, here's "Bad Apple", rendered as a multi-resolution Hilbert curve.

Thanks to Jana (npub1lkv…4trs) for the idea!

#genuary

#genuary Day 20: "One line. An artwork that is made of a ...

2026-01-20T10:43:14Z

In reply to nevent1q…sexp
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#genuary Day 20: "One line. An artwork that is made of a single line only."

Hilbert's cat! 🐈

#genuary2026 #genuary20 #p5js

#genuary Day 19: "16x16" Made a little display using ...

2026-01-19T22:16:08Z

In reply to nevent1q…hlcz
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#genuary Day 19: "16x16"

Made a little display using 16x16 characters, inspired by Alex' wonderful blog post about ASCII rendering: https://alexharri.com/blog/ascii-rendering

#genuary2026 #genuary19