Nostr notes by Kernel Bob :progress_pride:

Tagging some of my favorite Blender exprts... @npub1psa…twpn ...

2026-10-29T23:42:10Z

In reply to nevent1q…cgx5
_________________________

Tagging some of my favorite Blender exprts...
Metin Seven (npub1psa…twpn) [@pafurijaz](https://mastodon.social/@pafurijaz )

I've about 97% decided that I want to learn Blender in ...

2026-10-29T23:35:13Z

I've about 97% decided that I want to learn Blender in November. I mostly want to use it to model things for 3D printing, but I'd like to learn a little about rendering, too.

What's your favorite tutorial or other learning resource?

Thanks.

#Blender #NewSkillNovember

Yes sir, that's a tall mouth. (-:

2026-10-24T12:23:18Z

In reply to nevent1q…u64x
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Yes sir, that's a tall mouth. (-:

All of your scary/mean portraits in this thread have very tall ...

2026-10-23T01:26:55Z

In reply to nevent1q…zfax
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All of your scary/mean portraits in this thread have very tall mouths. Is that a general rule for making face look sinister, or your personal rule, or just a coincidence?

Is it a fragment shader?

2026-10-21T23:40:07Z

In reply to nevent1q…gnv9
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Is it a fragment shader?

Very cool!

2026-10-21T23:38:44Z

In reply to nevent1q…m5t0
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Very cool!

The parts arrived, I replaced the hotend and nozzle, and I ...

2026-10-19T05:15:53Z

In reply to nevent1q…eey3
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The parts arrived, I replaced the hotend and nozzle, and I printed the ColorMix test triangles.

The top one mixes the random filaments that were in the printer (green, red, yellow). The bottom row use CMYWK. The center bottom one mixes PolyMaker translucent CMY. The other two mix CMK and MYW. And some purge towers for scale.

[@linux_mclinuxface](https://fosstodon.org/@linux_mclinuxface ) you were looking for full color printing from a small number of filaments; here's a way to do it.

🧵 9/N

#Prusa #MMU3 #ColorMix #PolyMaker

Yes.

2026-10-18T01:16:36Z

In reply to nevent1q…pz9l
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Yes.

Can't get caffeine free Diet Pepsi here. And lots of things ...

2026-10-18T01:02:17Z

In reply to nevent1q…ztvv
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Can't get *caffeine free* Diet Pepsi here. And lots of things are twice the price here. The rear trunk is loaded up with distilled water for the same reason.

To be fair, the median income is twice as high here, too. Still, this is easy arbitrage.

PSA: A Tesla Model 3 (first gen) frunk will hold 60 half-liter ...

2026-10-18T00:53:01Z

PSA: A Tesla Model 3 (first gen) frunk will hold 60 half-liter soft drink bottles.

We buy this stuff in Ohio and haul it home. The Pepsi isn't available at home, and the Dr. Pepper is twice the price.

I loved this when you first showed it, and I still love it. I ...

2026-10-13T13:28:57Z

In reply to nevent1q…lssx
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I loved this when you first showed it, and I still love it. I think it's the parallel lines in the muzzle that do it for me.

🧵 8/N And furthermore, it looks like I broke the wire to the ...

2026-10-08T00:15:14Z

In reply to nevent1q…58x6
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🧵 8/N And furthermore, it looks like I broke the wire to the hotend thermistor when I remove the clogged nozzle.

I asked, "What could possibly go wrong?" Several things could go wrong.

#Prusa #MMU3

I ordered a replacement nozzle from Prusa; it'll be here in a ...

2026-10-07T20:22:54Z

In reply to nevent1q…23xc
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I ordered a replacement nozzle from Prusa; it'll be here in a week or so. I also preordered an INDX printer. We'll reopen the Chameleon Chronicle when it arrives.

🧵 7/N

#Prusa #MMU3 #INDX

At 6:30 this morning, 48.5 hours into the third try, I aborted ...

2026-10-07T20:13:01Z

In reply to nevent1q…454x
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At 6:30 this morning, 48.5 hours into the third try, I aborted the print. The extruder is completely clogged. (It's also bent, which can't help reliability.) You can see that the white had stopped extruding 20mm earlier where the pink turns to red.

Anyway, here's some ColorMix for you. Where it printed, it looks great.

🧵 6/N

#ColorMix #MMU3 #Prusa

21 hours in to attempt №3, Z = 93. Still printing chameleon ...

2026-10-06T06:56:06Z

In reply to nevent1q…rm57
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21 hours in to attempt №3, Z = 93. Still printing chameleon tail. Unfortunately, all the color is on the back side of the print.

The white just stopped extruding for a while around Z = 20. I adjusted the hobbed wheel tension, and that problem hasn't come back yet.

🧵 5/N

#ColorMix #Prusa #MMU3

The white filament (4th position) has had numerous load failures ...

2026-10-05T09:16:27Z

In reply to nevent1q…gcf2
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The white filament (4th position) has had numerous load failures all night. The other four filaments have been fine. Every time, the filament end looked broken off. So I aborted the print at Z = 60mm. I'm starting it again with a different shade of white, and I've switched filaments so white is in position 5 and black is 4th. We'll see if the problem follows the filament, follows the position, or stops happening.

Restarted print Monday at 05:00. ETA Wednesday 13:51.

🧵 5/N

Six hours into the second attempt, Z = 40mm, and it's gotten ...

2026-10-04T22:57:18Z

In reply to nevent1q…ddk4
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Six hours into the second attempt, Z = 40mm, and it's gotten to the colorful part of the print. The filament came off one spool -- I had loaded it wrong -- but I corrected it before it caused a problem. What else could go wrong?

This is the chameleon that Prusa feature prominently in their ColorMix marketing.

🧵 4/N

#Prusa3D #3DPrinting #MMU3 #ColorMix

I killed it at Z = 10.1mm. That filament had stopped extruding, ...

2026-10-04T16:32:56Z

In reply to nevent1q…9ls4
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I killed it at Z = 10.1mm. That filament had stopped extruding, and the printer didn't notice -- it just printed the other colors on air. I did a full Nextruder maintenance, ran a quick test print (50 colors changes), and restarted the print just now at Sunday, 12:28. It's projected to finish on Tuesday at 21:17. What could possibly go wrong now?

🧵 3/N

#Prusa3D #3DPrinting #MMU3 #ColorMix

The first filament load error happened one second before I posted ...

2026-10-04T13:38:29Z

In reply to nevent1q…gup3
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The first filament load error happened one second before I posted that. Z height 2.0mm.

Unwisely, I have started a ColorMix print. All five extruders. ...

2026-10-04T13:19:05Z

Unwisely, I have started a ColorMix print. All five extruders. 1200 layers. 3320 color changes. 57 hours. Using old, brittle filament. On my Prusa MK4 with MMU3. What could possibly go wrong?

I saw so many cool things at 3DPrintopia last weekend, and I really want to try a few of them.

#3DPrinting #Prusa3D #MMU3 #ColorMix

Very good! I will look for you there. (You look just like your ...

2026-09-15T12:42:35Z

In reply to nevent1q…sag8
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Very good! I will look for you there. (You look just like your avatar, right? I look just like mine...)

This is way too clever. This hacker made their e-ink display look ...

2026-09-12T09:49:05Z

This is way too clever. This hacker made their e-ink display look like a printer.

How to build a f**king printer
https://nishantjosh.dev/blogs/how-to-build-a-fking-printer/

#ESP32 #CleverHacks #DIY

Y'know, if I were a nefarious state level actor, I could ...

2026-09-11T10:33:06Z

In reply to nevent1q…rmpa
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Y'know, if I were a nefarious state level actor, I could think of a worse weapon than 10 million Internet-connected robots each with a map of a house and more than enough battery energy to drive under a couch and set it on fire.

How does it decided which ones are good enough to publish, and ...

2026-09-07T15:07:30Z

In reply to nevent1q…x5rj
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How does it decided which ones are good enough to publish, and how did it decide this one needed a strobe warning?

Is the noisemaker bot posting things that you've created in ...

2026-09-07T14:28:55Z

In reply to nevent1q…uh6r
_________________________

Is the noisemaker bot posting things that you've created in NoiseDeck, or are these software-generated pipelines?

Either way, it's an impressive portfolio.

Spousey and I are going to #3DPrintopia this month! Even better, ...

2026-09-02T09:19:58Z

Spousey and I are going to #3DPrintopia this month! Even better, we're riding the #Acela to Philadelphia to get there! We booked business class tickets last night. I've never ridden the Acela, and I might be looking forward to the train ride more than the show.

#Acela #RailTravel #HighSpeedRail

That's an elegant solution.

2026-08-25T12:02:16Z

In reply to nevent1q…00uv
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That's an elegant solution.

Work in progress photos. The Cat Tongue grip tape works great. I ...

2026-08-20T14:40:15Z

In reply to nevent1q…ljv0
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Work in progress photos. The Cat Tongue grip tape works great. I have to reprint parts of the thing, though, as the monitor stand doesn't quite fit the tray. (I printed lots of test fit pieces, but not enough. 😬)

🧵 13/N

#3DPrinting #CableManagement

I've modeled the front half of the bottom structure. ...

2026-08-19T12:14:45Z

In reply to nevent1q…mha6
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I've modeled the front half of the bottom structure. Here's a fly-through.

Notes:

- The black piece will be high temp plastic, probably ASA. The rest is PLA.

- The dock, which is hot, only touches the two little prongs at each corner. They fit into the grooves in its heatsink. There is air space above and below.

- The plastic is not load-bearing. The monitor stand will be supported by an M5 screw and locknut at each corner.

🧵 12/N

#3DPrinting #Fusion360

Here's a mockup of how I want the pieces arranged. Desk, ...

2026-08-19T00:42:27Z

In reply to nevent1q…ca2n
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Here's a mockup of how I want the pieces arranged. Desk, stand, dock under stand, and the MacBook itself slung onto the back of the stand. Now I just have to model and print parts to hold those items in those positions.

N.B., the vertical brick is the MacBook, not the screen. I didn't model the screen or the rest of the stand.

🧵 11/N

I got a dock. (CalDigit TS5 Plus) I want to put it under my ...

2026-08-19T00:31:50Z

In reply to nevent1q…8q64
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I got a dock. (CalDigit TS5 Plus) I want to put it under my monitor stand. It's almost the perfect width.

🧵 10/N

I've found that when I reformat them, they work again for a ...

2026-08-17T23:48:38Z

In reply to nevent1q…2xz6
_________________________

I've found that when I reformat them, they work again for a few months.

The MacBook Pro has scads of temperature sensors. MacOS makes ...

2026-08-17T01:22:51Z

In reply to nevent1q…kds6
_________________________

The MacBook Pro has scads of temperature sensors. MacOS makes exactly zero of them available to users to monitor. WTAF?

🧵 9/N

I found a neat writeup on generative cosine palettes. @loosenut ...

2026-08-16T10:04:46Z

I found a neat writeup on generative cosine palettes. @loosenut accidentally introduced me to the idea a few weeks ago, but it turns out it has a name.

The examples I've seen have been in RGB space. I wonder how well it works in HSV or perceptual spaces like OKLCH.

Linear Cosine Palettes
[@djnavarro](https://hachyderm.io/@djnavarro )
https://blog.djnavarro.net/posts/2025-09-14_cosine-palettes/

#GenerativeArt

I had the MacBook on my lap, as intended. While I was browsing my ...

2026-08-16T01:01:36Z

In reply to nevent1q…6ag2
_________________________

I had the MacBook on my lap, as intended. While I was browsing my Mastodon feed, I decided to start a `port selfupdate` in the background. A few minutes later, I noticed my legs burning: all 18 cores were at 100% utilization while rebuilding llvm, then clang, then rust.

🧵 8/N

I like the texture made of textured blocks.

2026-08-08T09:44:01Z

In reply to nevent1q…emfe
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I like the texture made of textured blocks.

How it's going. The MacBook has been replaced. Two Studio ...

2026-08-03T13:19:08Z

In reply to nevent1q…xy4m
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How it's going.

The MacBook has been replaced. Two Studio Displays have been set up. The Thunderbolt Display has been retired. The iMac will be retired soon. (I am also retired.) I will probably put the laptop in a holster under the desk eventually and use an external keyboard and trackpad. I have to check how hot it runs first.

Then it's cable management time.

🧵 7/N

How it started. 🧵 6/N ...

2026-08-03T13:02:32Z

In reply to nevent1q…39dn
_________________________

How it started.

🧵 6/N

Man, Liquid Ass is grating. Everything looks wrong. I haven't ...

2026-08-02T01:02:31Z

In reply to nevent1q…kd5v
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Man, Liquid Ass is grating. Everything looks wrong. I haven't seen anyting yet that I consider an improvement.

🧵 5/N

#MacOSTahoe

I de-stickered the old MacBook because I traded it in. The new ...

2026-08-01T23:45:18Z

In reply to nevent1q…azgd
_________________________

I de-stickered the old MacBook because I traded it in. The new MacBook is replacing both the old MacBook and the iMac Pro.

The iMac Pro is too old to trade in. I don't know what I'll do with it yet.

🧵 4/N

Say what you will about DBrand*, their stickers are strong and ...

2026-08-01T23:42:12Z

In reply to nevent1q…u7uc
_________________________

Say what you will about DBrand*, their stickers are strong and their stickum is sticky, even after 3+ years. It came off in one piece with very little residue.

*I don't know anything about DBrand's business practices, but I do know they have the most annoying marketing in the world.

🧵 3/N

#Stickers #DBrand #MacBookPro

It looks just like the old one. Old: 2021 16" MacBook Pro M1 ...

2026-07-31T22:57:18Z

In reply to nevent1q…qhmk
_________________________

It looks just like the old one.

Old:
2021 16" MacBook Pro
M1 Pro, 10 cores, 16 GPU cores
16GB, 1TB
space gray

New:
2026 16" MacBook Pro
M5 Max, 18 cores, 40 GPU cores
128GB, 4TB
space black

🧵 2/N

June 17: Tim Cook tells the WSJ that Apple will raise prices ...

2026-07-31T22:46:38Z

June 17: Tim Cook tells the WSJ that Apple will raise prices soon.

June 20: I stop procrastinating and order the new MacBook I'd been planning to get this year. ETA: July 28-Aug 4.

June 25: Apple raises prices. My configuration goes up 34% (!)

July 20: Bank declines the credit card charge. (new card issued since 6/20)
July 20: Spousey gets new CC info to Apple.

July 28: MacBook arrives.
July 30: We get home from Teardown.
July 31 (today): I unbox the MacBook.

🧵 1/N

#RAMpocalypse

Printables users! When you print something, upload a photo of ...

2026-07-31T00:13:50Z

Printables users!

When you print something, upload a photo of your print. It only takes a few minutes. Not only do you make the author feel warm and fuzzy, but Prusa rewards you with discount points.

#Printables

Prepare to have your arm ripped off when it bites. (in a fun ...

2026-07-27T13:25:24Z

In reply to nevent1q…t5pn
_________________________

Prepare to have your arm ripped off when it bites. (in a fun way.)

Were you at the end of the Z axis's travel?

2026-07-21T23:01:24Z

In reply to nevent1q…apye
_________________________

Were you at the end of the Z axis's travel?

My MMU is getting less reiable, to the point where I kind of hate ...

2026-07-14T15:50:29Z

In reply to nevent1q…x9vw
_________________________

My MMU is getting less reiable, to the point where I kind of hate to start multicolor prints. It worked great after I got it dialed in, for about 20,000 switches.

How long does the filament stay dry in the PolyDryer canisters? ...

2026-07-14T08:59:37Z

In reply to nevent1q…wk6y
_________________________

How long does the filament stay dry in the PolyDryer canisters? What's the humidity in your space this summer?

Have you tried using the current open source models the same way?

2026-07-10T13:40:07Z

In reply to nevent1q…d20c
_________________________

Have you tried using the current open source models the same way?

... and installed Linux Mint. Because Cinnamon looks a lot ...

2026-07-01T09:46:00Z

In reply to nevent1q…jqc4
_________________________

... and installed Linux Mint. Because Cinnamon looks a lot cleaner than GNOME. It went okay. I got a desktop, logged in, used the familiar Debian tools to install some things, and started to get comfortable.

Then I decided I wanted to use the desktop remotely from my Mac. (My 2005 $10 keyboard and mouse suck, and the monitor isn't conveniently placed.)

RDP or VNC?

...

3/N

#LinuxMint #Cinnamon #VNC

On Monday I decided, for reasons, to set up a Linux workstation ...

2026-07-01T09:35:44Z

In reply to nevent1q…z7ga
_________________________

On Monday I decided, for reasons, to set up a Linux workstation on a mini PC. I started with NixOS. I spent the next six hours reading NixOS documentation so I could install Python.

After six hours, the docs had taught me a new programming language, explained common pitfalls (so many pitfalls!) in using this language, but had not come anywhere near "type this to install a package".

I decided to move on, and overwrote the NixOS image with...

2/N

#NixOS

BEGIN RANT I used Linux, many distros*, as my primary desktop and ...

2026-07-01T09:26:36Z

BEGIN RANT

I used Linux, many distros*, as my primary desktop and everywhere else from 1998 to 2012. I used Unix starting in 1982, with Macintoshes off and on since their introduction.

In 2012, I moved my primary "desktop" to a MacBook. I liked it a lot, and a Mac is still my primary desktop. Since I retired in 2015, I maintain very few servers.

So my Linux sysadmin skills have atrophied.

1/N

* #SuSE #RedHat #Debian #Knoppix #Gentoo #Ubuntu #CentOS #SomeOthersIForgot

RE: https://mastodon.social/@daringfireball/116824399079277609 ...

2026-06-28T23:37:02Z

RE: https://mastodon.social/@daringfireball/116824399079277609

"we expect another doubling [of RAM prices] by the fall of 2027".

I guess it's time to stop waiting for prices to come down. Time to buy what I need or plan to do without indefinitely.

#RAMPocalypse #Xbox

quoting
note1e69…n7aj

Microsoft Raises Xbox Prices, Drops High-End Storage Model From Lineup
https://daringfireball.net/linked/2026/06/27/microsoft-raises-xbox-prices

Wow! That's not where I expected you to go at all.

2026-06-08T19:49:14Z

In reply to nevent1q…e8tm
_________________________

Wow! That's not where I expected you to go at all.

I designed a desk stand for my access point and published it on ...

2026-05-23T01:20:26Z

I designed a desk stand for my access point and published it on Printables.

https://www.printables.com/model/1730708-desk-stand-for-omada-eap655-wall-access-point

3D Printing (npub1d4n…dptf) #TPLink #Omada #3DPrinting #Printables

Those little details that only the creator can notice add up, ...

2026-05-17T12:49:11Z

In reply to nevent1q…h4mn
_________________________

Those little details that only the creator can notice add up, don't they?

I think you've never seen Vi Hart's Twelve Tones, and ...

2026-05-14T23:51:30Z

In reply to nevent1q…xuqc
_________________________

I think you've never seen Vi Hart's Twelve Tones, and that's a shame. Starting about 24:45 into the video they start drawing and singing exactly these diagrams, along with some more interesting ones.

https://vimeo.com/147902572

Tag @npub1hzy…wwp4 since you reminded me.

2026-04-15T18:25:51Z

In reply to nevent1q…u2xw
_________________________

Tag Ari [APz] Sovijärvi (npub1hzy…wwp4) since you reminded me.

The big tower is from printing these two hearts. I wish I ...

2026-04-15T18:20:07Z

In reply to nevent1q…ast8
_________________________

The big tower is from printing these two hearts.

I wish I remembered what those blue and green ones near the center of the pile were from. That's a good color scheme.

https://chaos.social/@kbob/114259304690050276
nostr:note1uzz9r4zdjn5tk2ex6hlj6p94rnegvda3fm2km0ermvxm0ty2mzrskn3xsh

For some reason, I saved all my 3D printing purge towers for the ...

2026-04-15T18:18:52Z

For some reason, I saved all my 3D printing purge towers for the last year. In the last year, I printed 108 purge towers. The tall one in the back is 355 grams. All the rest add up to 346 grams. 701g total.

#3DPrinting #Prusa

There is a coil spring inside the hub. When the spool rotates, ...

2026-04-14T20:11:51Z

In reply to nevent1q…65wz
_________________________

There is a coil spring inside the hub. When the spool rotates, the spring winds up. When the spring gets tight, the spool starts slipping on the hub. The spring is able to rewind 15-20 inches (35-50cm) depending on filament diameter.

Take a look at the auto-rewinding spools on Printables. I've ...

2026-04-14T20:06:12Z

In reply to nevent1q…7242
_________________________

Take a look at the auto-rewinding spools on Printables. I've been using them for the last 18 months. They work pretty well. I think there's a version that fits inside the PolyMaker box. I use the version that fits the (un)official Prusa drybox.

https://www.printables.com/model/702217-mmu3-mmu2s-5-spools-auto-rewinder-adapter-for-unor

Diffusing particle trails. It's hard to find settings where ...

2026-04-12T18:01:13Z

In reply to nevent1q…ppj8
_________________________

Diffusing particle trails. It's hard to find settings where they look good.

🧵 18/N

#BubbleUniverse

Just late night messing around... This is different. 🧵 17/N ...

2026-04-12T04:25:58Z

In reply to nevent1q…4ajx
_________________________

Just late night messing around... This is different.

🧵 17/N

#BubbleUniverse

I added particles contrails to the bubble universe. It's not ...

2026-04-12T02:40:31Z

In reply to nevent1q…kzq8
_________________________

I added particles contrails to the bubble universe. It's not my original idea; @larsbrinkhoff had them in his Javascript implementation.

This should be a better video than usual. I ditched pyAV and saved a PNG file for each frame. EDIT: Nope. My mastodon instance reencoded it.

Coming "soon": I'm thinking about blurring the contrails, and I've also got some new color schemes in the wings.

🧵 16/N

#BubbleUniverse

Wikipedia's math pages are always obtuse. They want to be ...

2026-04-11T18:36:58Z

In reply to nevent1q…pjer
_________________________

Wikipedia's math pages are always obtuse. They want to be rigorous, concise, and thorough, and that doesn't work to explain concepts.

If you're interested in the types of splines and their math (big if), I recommend this video. It explains things a little slower, with helpful animations throughout.

https://www.youtube.com/watch?v=jvPPXbo87ds

I've been working on adding color themes to the bubble ...

2026-04-06T02:01:56Z

In reply to nevent1q…6e9c
_________________________

I've been working on adding color themes to the bubble universe. Before today (Easter Sunday) is out, I want to preview the work-in-progress Easter theme.

🧵 15/N

#BubbleUniverse #Easter

You can use screws to join edge pieces and put the screws through ...

2026-04-05T04:00:43Z

In reply to nevent1q…ewe2
_________________________

You can use screws to join edge pieces and put the screws through the coroplast. Designed correctly, it won't be putting strain on the coroplast, so you don't have to worry about it pulling out.

2/2

When you say "bins", I think trash bins. If that's ...

2026-04-05T03:59:43Z

In reply to nevent1q…vn79
_________________________

When you say "bins", I think trash bins. If that's the case, adding a printed edge will keep runny stuff out of the coroplast. Whether you've got runny stuff or not, it will look nicer and be more durable.

1/

Have you ever seen an animated stereogram? After I locked onto ...

2026-04-04T18:42:30Z

In reply to nevent1q…v7m2
_________________________

Have you ever seen an animated stereogram? After I locked onto the dinosaur, I wanted to pick it up and rotate it for a better view. And that got me thinking... What would it take to make one of these work with screen updates?

Somebody must have done it...

Would a paper airplane do? You can't beat the price and ...

2026-03-17T05:35:56Z

In reply to nevent1q…t06n
_________________________

Would a paper airplane do? You can't beat the price and recyclablilty.

Yeah, I didn't mean to be exclusionary. If it attracts a ...

2026-03-10T22:30:02Z

In reply to nevent1q…tv2h
_________________________

Yeah, I didn't mean to be exclusionary. If it attracts a group of people with something in common, and it has a schedule of talks, it counts. Doesn't matter whether it's academic, commercial, community, or whatever. In person or online, paid or free, tiny or huge, etc.

I personally don't seek anything except info; see my recent exchange with [@linux_mclinuxface](https://fosstodon.org/@linux_mclinuxface ) if you want to know why I'm asking.

I assume most people who present ask to do so; the "If I ...

2026-03-10T22:07:33Z

In reply to nevent1q…l6r9
_________________________

I assume most people who present ask to do so; the "If I don't speak..." answer means you stay home if the submission was rejected. Sorry if this was unclear.

I understand some people get requested; I _hope_ those people are a small minority.

Social Tooters! Do you often speak at professional conferences, ...

2026-03-10T21:58:56Z

Social Tooters!

Do you often speak at professional conferences, trade shows, interest conventions, etc.? I don't, but I'm wondering if I'm in the minority.

Boost for increased attendance.

But don't you regularly speak at tech conferences? That's ...

2026-03-10T21:13:24Z

In reply to nevent1q…a4zl
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But don't you regularly speak at tech conferences? That's celebrity stuff.

Anyway, congratulations for well-deserved recognition.

The postprocessing make this image unsettling to me. It should be ...

2026-03-09T01:48:51Z

In reply to nevent1q…z6uk
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The postprocessing make this image unsettling to me. It should be shiny plastic with a simplistic lighting model, but somehow it's an antique artifact?

Anyway, as always, very clever juxtaposition of things that aren't seen together.

(I don't know Spinvis or the song.)

My filament dryer died. What's a good dryer in Q1 2026? I ...

2026-03-06T11:57:42Z

My filament dryer died. What's a good dryer in Q1 2026?

I just want a single spool dryer. I want to be able to print while drying. I'd like to dry the typical filaments: PETG, ASA, TPU, PA-n. (I'm not printing in PA yet, but I hope to.)

Thanks!

#3DPrinting

You might be able to tip the printer onto its back or its side ...

2026-03-02T02:55:38Z

In reply to nevent1q…2dda
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You might be able to tip the printer onto its back or its side while tightening the nozzle or even flip it upside down, depending on where the cables and filament tube are.

"America" is a big place. Only the east coast got this ...

2026-02-23T16:37:25Z

In reply to nevent1q…3avs
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"America" is a big place. Only the east coast got this storm. New York City has even more than we have. And my friends in Alberta #YEG wouldn't even mention a minor snowfall like this. (-:

I've broken ground on Adventure Trail II, The Adventure ...

2026-02-23T13:28:45Z

In reply to nevent1q…evfp
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I've broken ground on Adventure Trail II, The Adventure Continues.

This feels like twice as much snow as we got in January. It's deeper, driftier, and denser and wetter. Mr. Dog left the trail (of course) and the snow was up over his back -- just his head poking up.

3/

#Bombogenesis (whatever that is)

Light bloom is done with multipass blurring. First the image is ...

2026-02-21T20:14:10Z

In reply to nevent1q…jms4
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Light bloom is done with multipass blurring. First the image is downsampled 5 times and blurred into a new image half as big using a 6x6 filter. Then each downsampled image is blurred again and added back to its parent
using a 3x3 filter. Finally, the half-size image is blurred and mixed with the original image.

It's cheap! About 80 texture read operations per pixel total.

(See alt. text for video explanation. Or see https://learnopengl.com/Guest-Articles/2022/Phys.-Based-Bloom .)

🧵 14/N

#BubbleUniverse

Here's the isolated bloom. The checkerboard is easier to see ...

2026-02-21T01:39:59Z

In reply to nevent1q…zw5z
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Here's the isolated bloom. The checkerboard is easier to see here.

🧵 13/N

#BubbleUniverse

I've been working on a light bloom filter for the bubble ...

2026-02-21T01:32:30Z

In reply to nevent1q…z5et
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I've been working on a light bloom filter for the bubble universe. There's this weird checkerboard pattern in the glow - most visible in the southeast corner where the arrow is.

I finally figured it out. That is, I'm pretty sure, caused by floating point overflow. I'm using f16 because wgpu on my GPU doesn't support blending into an f32 buffer.

Anyway. Light bloom. I'll probably turn it down once it's debugged.

🧵 12/N

#BubbleUniverse

I don't think I pushed that effect far enough. MPEG ...

2026-02-19T12:36:59Z

In reply to nevent1q…dcde
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I don't think I pushed that effect far enough. MPEG compression adds a lot of grit, so here's a still for comparison.

Meanwhile, I've been working on light bloom. That's the next scheduled effect. This dandelion thing wasn't scheduled, though, and neither were 🧵 9 or 🧵 8.

🧵 11/N

#BubbleUniverse

The Bubble Universe tool now can directly record to video, and ...

2026-02-19T03:51:39Z

In reply to nevent1q…tqg5
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The Bubble Universe tool now can directly record to video, and it's got HDR with tone mapping.

I promised visual effects... Here's one where I made the particles fuzzier at the edges. (I also removed 80% of the particles and enabled HDR/tone mapping.)

🧵 10/N

#BubbleUniverse

The problem with programming eye candy tools is that it's ...

2026-02-13T06:16:51Z

In reply to nevent1q…4k7h
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The problem with programming eye candy tools is that it's easy to get distracted into making pretty pictures and stop working on the tool.

Anyway, here's an interesting spot I found in the universe of bubble universes. If you look at Yuruyurau's original code, there's a parameter, R = τ/200. In this image, I vary R between 0.49 and 0.51.

🧵 9/N

#BubbleUniverse

"Orthodontist's New Yacht"

2026-02-12T02:07:28Z

In reply to nevent1q…u9w3
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"Orthodontist's New Yacht"

I finally got my head around WebGPU/wgpu enough to make my own ...

2026-02-11T03:21:37Z

In reply to nevent1q…30du
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I finally got my head around WebGPU/wgpu enough to make my own render graph. Now the bubble universe thing is decomposed into a graph of render passes, and I've got some simple parameter animation going.

In this screencap, I'm varying the particle size and transparency and varying the number of particles in two ways in sync with the universe's revolution. The color map is just doing its own thing; that wasn't planned.

🧵 8/N

#BubbleUniverse #wgpu

I wrote another one! I ported my Javascript + WebGPU ...

2026-02-07T22:39:58Z

In reply to nevent1q…q4pt
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I wrote another one! I ported my Javascript + WebGPU implementation to Python + wgpu-py, and now I have a desktop app.

And I pushed it to Github. "Share and enjoy!"

https://github.com/kbob/bubble-universe

🧵 7/N

#BubbleUniverse #Javascript #WebGPU #wgpu

And now I've implemented it. But instead of porting it to the ...

2026-02-02T17:48:49Z

In reply to nevent1q…uvmh
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And now I've implemented it. But instead of porting it to the slowest most decrepit retromachine I can find, I'm going the other direction: What kind of visual effects can I achieve if I throw a decent GPU at it?

The video above in 🧵 1 is a screen capture from my Javascript + WebGPU implementation. It's running at 20 FPS, using about 5% of the CPU and 3% of the GPU. More to come...

🧵 6/N

#BubbleUniverse #Javascript #WebGPU

Several others have implemented it; it seems to be popular with ...

2026-02-02T17:36:07Z

In reply to nevent1q…2zhp
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Several others have implemented it; it seems to be popular with the retrocomputing crowd. I found out about it when Paula Maddox (npub1509…c5pe) ported it to her FPGA 6502 simulator a few days ago.

🧵 5/N

#BubbleUniverse #FPGA

https://mastodon.social/@PaulaMaddox/115984089839706205

quoting
note14e9…d0es

I did a quick version of the “bubble verse” program on #LT6502 and after a while it’s looking incredible.
I’m going to leave it running for an hour two.
I do want to tweak the code to show what iteration it’s currently on rather than the start iteration.
#retrocomputing

got into the act with Javascript and PDP-10 assembler versions. ...

2026-02-02T17:32:36Z

In reply to nevent1q…mknr
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got into the act with Javascript and PDP-10 assembler versions. The sources are on Github, and a video of the PDP-10 is on YouTube.

(Lars, what display are you emulating on the '10?)

https://github.com/larsbrinkhoff/bubble-universe

https://www.youtube.com/watch?v=hIU7iYWZWSY

🧵 4/N

#BubbleUniverse #Javascript #PDP10

Paul Dunn ( @npub1e6a…tq4w ) followed a few months later with ...

2026-02-02T17:27:15Z

In reply to nevent1q…6zyl
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Paul Dunn ( ZXDunny (npub1e6a…tq4w) ) followed a few months later with an even terser BASIC version and a demo on YouTube.

https://www.youtube.com/watch?v=G5aOBh7qQe8

🧵 3/N

#BubbleUniverse

History. As best I can tell, the bubble universe was invented by ...

2026-02-02T17:24:19Z

In reply to nevent1q…9vxd
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History. As best I can tell, the bubble universe was invented by Twitter user @yuruyurau in 2020 as a very terse Processing.py sketch and first published in this tweet.

https://xcancel.com/yuruyurau/status/1226846058728177665

Edit: add screen capture of tweet.

🧵 2/N

#BubbleUniverse

I'm starting a new "build thread" (not building ...

2026-02-02T17:20:33Z

I'm starting a new "build thread" (not building anything except pixels, but they're good pixels).

This is the "Bubble Universe" graphics hack. I'm going to try to have some fun with it. Follow or ignore hashtag #BubbleUniverse for more.

🧵 1/N

#BubbleUniverse #BuildThread #GenerativeArt

I think the magenta-green lighting is the spookiest part.

2026-01-30T01:36:13Z

In reply to nevent1q…rkgh
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I think the magenta-green lighting is the spookiest part.

Mr. Dog approves. 2/ #AdventureTrailNetwork #DogsOfFedi ...

2026-01-29T18:44:04Z

In reply to nevent1q…a35j
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Mr. Dog approves.

2/

#AdventureTrailNetwork #DogsOfFedi

This morning I made an adventure trail network for Mr. Dog in our ...

2026-01-29T18:39:25Z

This morning I made an adventure trail network for Mr. Dog in our front yard.

1/

#AdventureTrailNetwork #DogsOfFedi

I printed a little stand to get my NAS off the floor. It's ...

2025-12-08T02:48:56Z

I printed a little stand to get my NAS off the floor.

It's two pieces, reinforced with some pieces of threaded rod I had on hand.

3D Printing (npub1d4n…dptf) #3DPrinting #NAS

NH serves VT the ultimate diss: not even good enough for a ...

2025-12-02T04:43:01Z

In reply to nevent1q…7h4d
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NH serves VT the ultimate diss: not even good enough for a downvote.

My sympathies.