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Rio de Janeiro's "homegrown" LLM appears to be a merge of an existing model

https://github.com/nex-agi/Nex-N2/issues/4
78•unrvl22•1h ago•45 comments

Firewood Splitting Simulator

https://screen.toys/firewood/
329•memalign•4d ago•110 comments

The Birth and Death of JavaScript (2014)

https://www.destroyallsoftware.com/talks/the-birth-and-death-of-javascript
154•subset•4h ago•84 comments

Show HN: Kage – Shadow any website to a single binary for offline viewing

https://github.com/tamnd/kage
6•tamnd•8m ago•0 comments

Caddy compatibility for zeroserve: 3x throughput and 70% lower latency

https://su3.io/posts/zeroserve-caddy-compat
75•losfair•3h ago•21 comments

Perlisisms

https://www.cs.yale.edu/homes/perlis-alan/quotes.html
42•tosh•2h ago•11 comments

Lisp's Influence on Ruby

https://blog.tacoda.dev/lisps-influence-on-ruby-6a54f1a7740e
150•tacoda•3d ago•20 comments

Ask HN: What are you working on? (June 2026)

23•david927•1h ago•40 comments

Swiss voters reject proposal to cap population at ten million

https://www.swissinfo.ch/eng/swiss-politics/swiss-voters-reject-proposal-to-cap-population-at-ten...
76•FabCH•1h ago•23 comments

No, everyone is not using AI for everything

https://gabrielweinberg.com/p/people-are-consuming-ai-like-they
237•yegg•2h ago•238 comments

FarOutCompany

https://faroutcompany.com/
60•bookofjoe•3h ago•5 comments

I indexed 669 GB of my GoPro videos using my M1 Max computer and local ML models

85•iliashad•2h ago•11 comments

The only scalable delete in Postgres is DROP TABLE

https://planetscale.com/blog/the-only-scalable-delete
64•hollylawly•3d ago•30 comments

Global density and biomass of arbuscular mycorrhizal fungal networks

https://www.science.org/doi/10.1126/science.adu4373
24•zdw•1d ago•1 comments

Rio de Janeiro's city government model Rio3.5 beats Qwen3.7 in recent benchmarks

https://twitter.com/zenmagnets/status/2065796012820848699
102•lucasfcosta•2h ago•28 comments

Show HN: Dual YOLOv8n UAV Detection on RK3588S at 42 FPS Using NPU

https://github.com/alebal123bal/khadas_yolov8n_multithread
25•alebal123bal•2h ago•4 comments

Formal Methods and the Future of Programming

https://blog.janestreet.com/formal-methods-at-jane-street-index/?from_theconsensus=1
64•eatonphil•4h ago•19 comments

How did Atari apply side art to Arcade Cabinets?

https://arcadeblogger.com/2026/06/14/how-did-atari-apply-side-art-to-arcade-cabinets/
47•msephton•4h ago•8 comments

Quivers: A year of linear algebra by drawing arrows

https://lisyarus.github.io/blog/posts/quivers-a-year-of-linear-algebra-by-drawing-arrows.html
10•ibobev•4d ago•0 comments

Show HN: 3D print Z reinforcement via injected loops

https://mgunlogson.github.io/magma/
17•mgunlogson•5d ago•6 comments

Linux 7.1

https://lore.kernel.org/lkml/CAHk-=wi4BF4bMhZNZ1tqs+FFV4OuZRe3ZqdWB+LxRLmRweUzQw@mail.gmail.com/T/#u
48•berlianta•1h ago•2 comments

How to Earn a Billion Dollars

https://paulgraham.com/earn.html
245•kingstoned•5h ago•668 comments

A 'cold blob' in the Atlantic could be a sign of AMOC shutdown

https://www.cnn.com/2026/06/12/climate/cold-blob-atlantic-amoc-ocean-circulation
101•tambourine_man•2h ago•122 comments

Free SQL→ER diagram tool, runs in the browser, nothing uploaded

https://sqltoerdiagram.com/
311•robhati•13h ago•60 comments

Honda Civics and the Evil Valet

https://juniperspring.org/posts/honda-evil-valet/
363•librick•16h ago•86 comments

Extinction-Level Capitalism

https://matthewbutterick.com/extinction-level-capitalism.html
87•laurex•3h ago•34 comments

KPMG pulls report on AI usage due to apparent hallucinations

https://techcrunch.com/2026/06/13/kpmg-pulls-report-on-ai-usage-due-to-apparent-hallucinations/
75•Brajeshwar•3h ago•6 comments

Dangerous hormone-disrupting chemicals found in US breast milk samples

https://www.theguardian.com/us-news/2026/jun/14/breast-milk-research-chemicals
51•andsoitis•2h ago•20 comments

FTX's former Anthropic stake would be worth about $75B at today's valuation

6•adam_rida•1h ago•7 comments

Don't trust large context windows

https://garrit.xyz/posts/2026-05-06-dont-trust-large-context-windows
221•computersuck•11h ago•163 comments
Open in hackernews

Show HN: I made my own TRMNL e-ink device

https://www.stavros.io/posts/making-a-trmnl-device/
85•stavros•1y ago

Comments

estsauver•1y ago
This is neat--what's the typical refresh rate/update speed for the image service?

Is the API is basically "Push PNG to server, PNG displays on whiteboard?"

stavros•1y ago
No, TRMNL generate the images themselves. The device requests the image every so often (with an interval configurable by the server). They've (understandably) built the firmware to be pretty specific to their service, though you can build your own server for it as well (it's just a JSON response with the image to fetch).
joshstrange•1y ago
The API is:

You write HTML templates (that are stored on their servers) then can post data to them (or have them poll an endpoint to get the data) to "merge" into the template.

Think:

    <h1>Hi {{ username }}</h1>
    <div>You have {{ openPRCount }} open PRs</div>
And you need to provide (via push or pull):

    {"username": "joshstrange", "openPRCount": 10}
That might not be the exact syntax (I wrote my custom plugin a month or two ago and haven't touched it since).

They provide a "UI Library" (Design System) [0] to give you building blocks of UI to use if you want.

It made it really easy to get started. They limit to 1 screen update every 15min (that is the fastest you can have the screen update). But you can press the restart button on the back of the device to force it to update, you might need to force your plugin to re-generate the image before you do that.

If you want to flash your own firmware you can lower that (at the expense of battery life) value or even have it call out to your own server that can do whatever you want.

[0] https://usetrmnl.com/framework

JKCalhoun•1y ago
TRMNL's site seems to think there is not a cost-savings to build-your-own. They don't appear to include the licensing cost though. From their site:

> Making your own TRMNL from scratch is not an economically rational decision, but rather a labor of love. Our own team learned this the hard fun way while building v1 over 7 months, from Dec 2023 to July 2024.

> Here's what you can expect to spend per component:

> • Battery, $5 (unnecessary if you prefer plugged in)

> • EPD screen, $65 (see the Waveshare 7.5" on Amazon)

> • Microcontroller, $3-50 (depends if you build/solder yourself or leverage a PCB prototyper)

> • Enclosure/case, $3-20 (design + 3D print yourself or use a print farm)

stavros•1y ago
Yeah, my BOM was $20 for the driver and $50 for the screen, plus $50 for the TRMNL license. About the same as the TRMNL I bought, in the end, though as you say the license is a big part of it.

My worry is about my lifetime license eventually turning into a subscription requirement.

n8cpdx•1y ago
> I could have my own TRMNL for under $80, or, if you factor in my time, around $5,000, which is a bargain

I love the self awareness.

I'm trying to be better about factoring in my time, largely unsuccessfully.

E.g. I just spent $200 of my time trying to trade in an iphone at the apple store (the Apple Store sucks now and has terrible processes). Value of trade in: $200

stavros•1y ago
The trick is that, if you're enjoying the process, the cost is negative! Trading in an iPhone doesn't sound very enjoyable, but to each their own.
drcongo•1y ago
stavros is one of my favourite posters on HN, and the writing on his site is full of beautiful turns of phrase like that.

> The Timeframe is a beautiful, battery-powered, high-resolution e-ink device that sits on my desk and reminds me of the inexorable grind that saps my creativity and drains me of the will to live.

From https://www.stavros.io/posts/making-the-timeframe/

edit: Ever since I read the Timeframe article I've been itching to do the same thing myself, but I suck at these things so worry that I'm just going to end up with more piles of electronic parts in my cupboard of broken dreams.

billev2k•1y ago
Speaking of a beautiful turn of phrase: "...more piles of electronic parts in my cupboard of broken dreams."

:)

stavros•1y ago
joshstrange•1y ago
> $20 “developer edition” license which “unlocks their API”. I expected this upgrade to give me API access so I could retrieve the image that’s displayed of my device, but that’s not actually the case, and you need a $50 “virtual device” license for that.

I cannot find a mention of the developer edition. I own a TRMNL and use the api for free (I assume because I have a device) and then they offer a lifetime $50 license to use their backend with your own device. I think that's fair.

Also, I don't quite understand their back ordering information. I ordered mine and got it less than a week later even though they said it was back ordered.

stavros•1y ago
That option is for when you add it to your cart. You get API access with the device because you have one, but AFAIK you can't develop plugin without the dev option? I don't know, I'm confused :(
joshstrange•1y ago
Interesting, I have developed plugins for my TRMNL and I only paid for the device.

Or at least I've developed HTML-based views that are custom (I think that's "plugins") that are displaying on my device.

stavros•1y ago
Hm :/ I wonder why I paid the extra $20, then...
I call it the "cupboard of infinite possibilities".
stavros•1y ago
Email me and I'll help you!
sho_hn•1y ago
Have mine in the hopes of making your itch unbearable: https://imgur.com/a/diy-automatic-e-ink-newspaper-using-rust...

You can do it! :-) Also happy to help if you have questions.

stavros•1y ago
Oh I had seen yours! What a fantastic project, well done. Beautiful result.
sho_hn•1y ago
Thanks!

I'm currently making something inspired by your Timeframe, but using an OLED panel, as a 2nd screen for my desk - but almost the same form-factor and a similar design.

I'm trying out a faux 3D-printed wood process with wood powder-infused PLA, sanding and staining, and a faux wood grain I baked into the geometry using a displacement map, though. Hoping to make it all posh.

stavros•1y ago
That sounds fantastic! I'd love to see updates, we have a maker Discord server I can invite you, if you're interested, or it would be fun to just email! My email is in my profile.
KMnO4•1y ago
How did you come to the $200 figure?

Your time does have value, but it’s in terms of opportunity cost, not hourly wage. Presumably you wouldn’t have made $200 had you not gone to the Apple Store (unless you went when you were supposed to be working and have a job where that time becomes unpaid).

stavros•1y ago
Not the OP, but I just figure that I could be contracting somewhere at any point, really, so each hour costs me my fee.
n8cpdx•1y ago
I'm paid by the hour and the Apple Store is a block away from my place of work, so in this particular case it is pretty clear cut. I realize it is different for people paid a fixed annual salary.

Although in hindsight it probably felt like I spent more time there than I actually did. I think the $200 is fair given that I would normally be quite willing to pay to avoid that kind of unfortunate circumstance.

And of course that leaves out the complication of pre- vs post-tax wages, retirement savings, etc.

turtlebits•1y ago
You can always trade in by mail. I just did it for my M1 Air. I still need to drop it off at UPS, but no driving to the mall, parking, and waiting in line.

This is also why I buy almost everything from Amazon. Their returns process is worlds ahead of every one else. It also doesn't hurt that drop-offs are at grocery stores.

n8cpdx•1y ago
My problem is I initially had a trade in by mail in process. But since I have to walk by the apple store daily on my way to work, it was one of those rare moments where mail was actually less convenient. And I was concerned about the mail in return contractor deciding the phone is worthless (it happens).

Apple made me call to cancel the trade in, then said they could do it in store. They could not, not then, not an hour later, not days later.

Internet and apple store employees said it should be fine. I guess they don't make geniuses like they used to.