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France's homegrown open source online office suite

https://github.com/suitenumerique
429•nar001•4h ago•203 comments

British drivers over 70 to face eye tests every three years

https://www.bbc.com/news/articles/c205nxy0p31o
134•bookofjoe•1h ago•112 comments

Start all of your commands with a comma (2009)

https://rhodesmill.org/brandon/2009/commands-with-comma/
438•theblazehen•2d ago•157 comments

Leisure Suit Larry's Al Lowe on model trains, funny deaths and Disney

https://spillhistorie.no/2026/02/06/interview-with-sierra-veteran-al-lowe/
26•thelok•1h ago•2 comments

Hoot: Scheme on WebAssembly

https://www.spritely.institute/hoot/
86•AlexeyBrin•5h ago•17 comments

OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
778•klaussilveira•19h ago•241 comments

Stories from 25 Years of Software Development

https://susam.net/twenty-five-years-of-computing.html
35•vinhnx•3h ago•4 comments

First Proof

https://arxiv.org/abs/2602.05192
38•samasblack•2h ago•24 comments

Software Factories and the Agentic Moment

https://factory.strongdm.ai/
19•mellosouls•2h ago•17 comments

Reinforcement Learning from Human Feedback

https://arxiv.org/abs/2504.12501
56•onurkanbkrc•4h ago•3 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
1027•xnx•1d ago•584 comments

Coding agents have replaced every framework I used

https://blog.alaindichiappari.dev/p/software-engineering-is-back
172•alainrk•4h ago•230 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
168•jesperordrup•10h ago•62 comments

A Fresh Look at IBM 3270 Information Display System

https://www.rs-online.com/designspark/a-fresh-look-at-ibm-3270-information-display-system
24•rbanffy•4d ago•5 comments

StrongDM's AI team build serious software without even looking at the code

https://simonwillison.net/2026/Feb/7/software-factory/
18•simonw•2h ago•15 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
103•videotopia•4d ago•27 comments

Vinklu Turns Forgotten Plot in Bucharest into Tiny Coffee Shop

https://design-milk.com/vinklu-turns-forgotten-plot-in-bucharest-into-tiny-coffee-shop/
5•surprisetalk•5d ago•0 comments

72M Points of Interest

https://tech.marksblogg.com/overture-places-pois.html
13•marklit•5d ago•0 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
265•isitcontent•20h ago•33 comments

Making geo joins faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
152•matheusalmeida•2d ago•42 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
277•dmpetrov•20h ago•147 comments

Ga68, a GNU Algol 68 Compiler

https://fosdem.org/2026/schedule/event/PEXRTN-ga68-intro/
35•matt_d•4d ago•10 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
546•todsacerdoti•1d ago•263 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
418•ostacke•1d ago•110 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
65•helloplanets•4d ago•69 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
364•vecti•22h ago•164 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
338•eljojo•22h ago•207 comments

Show HN: Kappal – CLI to Run Docker Compose YML on Kubernetes for Local Dev

https://github.com/sandys/kappal
16•sandGorgon•2d ago•4 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
457•lstoll•1d ago•301 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
372•aktau•1d ago•195 comments
Open in hackernews

Coffeematic PC – A coffee maker computer that pumps hot coffee to the CPU

https://www.dougmacdowell.com/coffeematic-pc.html
278•dougdude3339•6mo ago

Comments

BizarroLand•6mo ago
This is the right kind of absurd for a Friday afternoon
dabumere•6mo ago
This just made me smile
dougdude3339•6mo ago
Means a lot - thank you :)
xandrius•6mo ago
Absolutely cool project but unfortunately percolating coffee is nowhere near the best way to brew a good cup of coffee.
m463•6mo ago
Should probably run cpu benchmarks while slowing water cooling pump + pressurizing cooling system above 9bar and expressing water through carefully tamped specially ground coffee and drip into cup.

or just have a large reservoir, severely overcool the cpu and cold-brew the coffee

MangoToupe•6mo ago
This must be a matter of taste because I strongly disagree.
ViscountPenguin•6mo ago
Good luck hooking up an espresso machine to a PC though.
shakna•6mo ago
Tell that to the gaggiuino crowd.
Avicebron•6mo ago
That's forbidden jutsu.
sillywalk•6mo ago
It's not a PC, but SGI made an espresso machine inside an Indigo case as a marketing gag. The "Espressigo".

https://commons.wikimedia.org/wiki/Category:SGI_Espressigo

https://old.reddit.com/r/SiliconGraphics/comments/1eh9puu/sg...

dougdude3339•6mo ago
Excellent find - I haven't heard of this one. The marketing gag approach reminds me of the Zotac Mekspresso build by Ali “THE CRE8OR” Abbas. https://thecre8or.de/mekspresso.htm
MangoToupe•6mo ago
I assume that they're referring to something other than espresso if they're trying to get the best cup.
dredmorbius•6mo ago
Very little about this project screams "best" or "fully optimised".

Its objectives lie elsewhere.

dougdude3339•6mo ago
Glad you like the project. I might have special taste in coffee, this stuff is pretty good, but honestly I like instant too...
Groxx•6mo ago
I'm glad someone is still building what needs to be built <3
Joel_Mckay•6mo ago
v0.2a needs to mine crypto to pay for its own coffee beans while peculating the coffee. =3
MostlyStable•6mo ago
I assume you meant "percolating", but you very nearly spelled "speculating", which, given the crypto, seems more appropriate.
fadesibert•6mo ago
And of course, peculation means misappropriating or embezzling funds. Again, given crypto (and certain notorious crypto exchanges), even more appropriate.
Joel_Mckay•6mo ago
"Humor can be dissected, as a frog can, but the thing dies in the process and the innards are discouraging to any but the pure scientific mind." (E. B. White)

¯\_(ツ)_/¯"

Dilettante_•6mo ago
FWIW, I would not have known 'peculating' was a real word with a meaning if GP hadn't explained.
Joel_Mckay•6mo ago
Never, the French Press is superior in every regard. lol =3
angled•6mo ago
Then tokenise the mined crypto. The tokens can be represented by coffee beans. The beans are now magically valuable!

Digitally enhanced coffee as fungible tokens. “Decaf” for short. What could go wrong?

Groxx•6mo ago
"DECAF tokens, also known as DECAF T, can be used to..."
mtillman•6mo ago
SGI was ahead of the game: http://mycollins.net/sgicoffee.png
dougdude3339•6mo ago
Excellent find I have never heard of - thank you for sharing
zeta0134•6mo ago
This is the very best kind of silly project. :) I'm pleased to learn that the coffee is an effective (... sortof) heatsink and not merely part of the case.
dougdude3339•6mo ago
Thank you - I wonder, if in some microscopic way, the coffee is caffeinating the CPU too.
jfengel•6mo ago
Why not rig it the other way: pump water past the CPU, then through your coffee grounds?

It probably wouldn't be great for your CPU, because the temperature required to properly brew coffee is hotter than you really want for your CPU. But maybe get the water to 80C, and a secondary heater after that.

umanwizard•6mo ago
I'm not expert in CPU water cooling but I'd guess the CPU would have to be way over 100C in order to get the water to 80C quickly.
macNchz•6mo ago
You could recirculate water past the CPU via an insulated storage carafe. This would create a fun and exciting gamble wherein you might receive a freshly brewed pot of coffee OR your computer might turn itself off just before the water is hot enough to brew with, and the time it would take would be based on how hard you worked the PC.
nottorp•6mo ago
Modern Intel can help.
_Algernon_•6mo ago
Add a heat exchanger.
mikepurvis•6mo ago
Not sure if this is what you mean but an actual heat pump with a compressor could handle this— after all, an air conditioner cools your house to 23C by dumping the waste heat to an environment that can be 40C or more.
reactordev•6mo ago
This, except when it comes time to actually brew, it goes to a 5.25” slot to heat up, then you can determine the best delivery mechanism for your build. Shot/Kup, drip, pour over, just don’t build a french press PC.

And have a reservoir large enough to replenish the closed loop circuit when you press the button.

reaperducer•6mo ago
The CD ROM drive should open so you can insert a paper cup and then the coffee dispenses into it.
dougdude3339•6mo ago
Kicking myself for not thinking of this... it's genius
mulmen•6mo ago
Use a heat pump to keep the CPU (and GPU as a secondary heat source) at a lower temperature then heat the coffee water with a secondary heat exchanger. Then you can control the temperature of both cooling loops independently.
swiftcoder•6mo ago
Maybe one wants a mini heat pump between the CPU and the coffee. 50º C is plenty for a heat pump to very efficiently push the temperature on the other side to 98º C or so
matheusmoreira•6mo ago
Can this concept be extended to the home in general? Why not pump heat out of computer components and into a general hot water tank for home use? I wonder if anyone's tried it.
withinboredom•6mo ago
Linus (tech talks) uses it to heat his pool.
thangngoc89•6mo ago
I remember in a video, Linus measured that the ground absorbs all the heat before it could even reaching the pool.
withinboredom•6mo ago
His pipes have too much or not enough insulation then.
lubsch•6mo ago
I don't know anything about the topic and this made me really curious. Why could too much insulation be a problem?
withinboredom•6mo ago
It then just acts like the ground does and just absorbs the heat instead.
clickety_clack•6mo ago
This would be a really cool idea for municipal swimming pools or large residential developments. It blows my mind that people pay to heat up all these data centers and then pay again to get rid of the heat. Data centers could rent space by paying in kWh of heat.

I would set something like this up in my house if there was some kind of decentralized processing company I could register with.

FinnKuhn•6mo ago
Two issues I see here would be that a) the demand and production of how water and compute power might not align and b) the amount of water heated this way would probably not be nearly enough for most people.

What is probably more feasible is to save on heating costs by heating your apartment partially with your computer.

markovs_gun•6mo ago
The main problems I see are that we don't clean the insides of computer parts and we can drink water with way more calcium in it than is good for high temperature water heaters. Cooling water needs to be treated to not grow algae and bacteria in it, and a lot of times that renders it poisonous to drink. Conversely, drinking water has a lot of minerals still in it and those minerals will deposit and form scale on the insides of your heat transfer surfaces, which will severely impact performance over time. It may not even take that long depending on how hot the surface is and how hard your water is.
matheusmoreira•6mo ago
I assume whatever fluids are used for heat transfer would circulate in completely separate circuits from the water used or consumed by humans.
0xCMP•6mo ago
That is how it works. There is the water which goes outside pumped through pipes on the floor of the pool like in-floor heating.

That is pumped so it cools down the water going through the computers.

It has gone through several revisions plus complications with wanting to heat up solar panels too.

swiftcoder•6mo ago
There should not be any contact between your heat source and your drinking water, in pretty much any modern water-heating system. You heat a refrigerant, then run it and the water through opposite sides of a heat exchanger (most domestic hot water tanks have a coil-style heat exchanger inside).
mikepurvis•6mo ago
I’ve long been annoyed in the summer every time I turn on a heat generating appliance (stove, dryer, on-demand hot water) and then think about all the waste heat my air conditioner dumped out the side of the house in the last X hours. It would be amazing to somehow store that heat in a reservoir where it could be later used.

I doubt the extra piping and infrastructure is anywhere near worth it, but I sometimes fantasize about an experimental building that was designed from the get-go with a single integrated heat loop that all the major appliances were plugged into, and how that might look. Seems like the sort of thing that could be tried in a much more confined space such as for an off-grid RV.

matheusmoreira•6mo ago
> I doubt the extra piping and infrastructure is anywhere near worth it

I wonder. Infrastructure investments tend to have absurd payoffs. For example, my solar energy equipment has been generating profit for years.

In my country 5 kW electric showers are common every day items and they add up to a huge chunk of household energy consumption. Switching to a more efficient water heating system has been on my mind for years. If I can use my home server as a heating element, so much the better. Could even use free CPU cycles to mine Monero on it. A solar powered cryptocurrency mining home serving water heating computer. Wow.

I also think a lot about the heat my air conditioners constantly pump out of my house. Seems like a waste to just throw it out of the house like that. Ideally it would be stored so that it could be used to heat other things later... To me it seems like it should be possible with enough integration.

mikepurvis•6mo ago
I think it boils down to a) effectively storing heat for later use is extremely difficult to do well, and b) moving heat around properly means 400psi compressor tubes everywhere, and those are a lot more fragile and annoying to work with than regular plumbing, and you need a special gas licence to charge them up afterward.

In contrast to the RV proposal, maybe a better option could be something like a boutique hotel, where you’ve got 100+ showers happening every morning, so having a giant cistern of hot water that you dump all the waste heat from AC, fridges, and freezers into makes a ton of sense.

MrFots•6mo ago
"I think it boils down to..."

Nailed it.

Groxx•6mo ago
There are heat-pump water heaters, if that fills in a conceptual gap. The main complaint I've seen with them has just been that they're slow, but that's more of a product-design (at a price point) issue than anything fundamental afaict.
dgacmu•6mo ago
I have used a mini home-datacenter to heat my house in winter (very effectively - I used a fan to direct the heat towards the intake for the AC system and ran the AC fan). But I decided against the HW heater version of it from a cost recovery perspective - we just don't use that much hot water and we had a then-new high efficiency gas hot water heater.

However, there's a fairly straightforward way to get halfway there: You can run a standard heat pump hot water heater and put the computers in the same room with it. The computers will heat the air, the heat pump hot water heater will cool the air. Won't be as efficient as a closed loop system directly connecting the computers to the HW heater but you also won't need to worry about whether the heat production and consumption are balanced.

appease7727•6mo ago
Heat pump water heaters are a product you can (probably) buy today. They suck ambient heat from the air and stuff it into the water.

I really want to get one and pipe all the exhaust from my homelab to it.

swiftcoder•6mo ago
They are pretty common in Europe, because older houses here all had gas-powered furnaces, and with an air-to-water heat pump you can continue to use the existing tubing and radiators.

New house builds often include one to run domestic hot water and under-floor heating for bedrooms and such. The downside here is that you probably also need an air-to-air heat pump for cooling in summer, and now you have two expensive heat pumps, and a whole extra set of pipes running around...

jdietrich•6mo ago
There are a number of pilot projects currently in development to heat entire neighbourhoods using the waste heat from data centers.

Unless you've got a monster ML workstation under your desk or a crypto mining rig in your garage, that surplus heat isn't especially useful and isn't really worth harvesting. A typical desktop PC only dissipates a few tens of watts at idle or a few hundred watts under heavy gaming loads, versus many kilowatts for a typical domestic water heater.

https://www.gov.uk/government/news/thousands-of-homes-to-be-...

pitched•6mo ago
80C is about the lowest you would want to use but can definitely get you a good cup of coffee. It will come out a bit lighter but using a finer grind might offset that.
tecleandor•6mo ago
Let's do cold brew then...
nosioptar•6mo ago
Could use an old P4 Celeron as the secondary heater.
omh•6mo ago
Many years ago we used a hot P4 to heat mulled wine.

https://imgur.com/a/mulled-wine-pc-WW1pW

It could get to 60°C which is a bit low for coffee but was great for mulled wine

dougdude3339•6mo ago
Incredible - thank you for sharing this.
bongodongobob•6mo ago
It better support RFC 2324.

https://en.m.wikipedia.org/wiki/Hyper_Text_Coffee_Pot_Contro...

throwmeaway222•6mo ago
It does, unfortunately there is a bug as every request is returning a 418.
parlortricks•6mo ago
Time for you to use my 1080ti with Furmark too cook some eggs and bacon to go with the coffee.
dougdude3339•6mo ago
Damn that's a good idea... orienting the graphics card horizontally would've made a little frying pan.
imchillyb•6mo ago
Tread carefully. This is how the Borg started. “Your caffeinated and medicated existence will be added to our own, resistance is futile… pass the creamer.”
bluelightning2k•6mo ago
100% Java compatible
layer8•6mo ago
It should use the logo: https://mybcagroup.blogspot.com/2016/07/what-is-hot-java-hot...
9front•6mo ago
He's using "Linux Mint" for OS. Should have used "Coffee Linux" instead.
ghm2180•6mo ago
A key with haptic feedback that when pressed runs the CPU/GPU and as water heats up the button lets you know. Calibrate feedback to temperature and ease off the button when the water is done.
bialpio•6mo ago
Was a reference to https://xkcd.com/1172/ intentional here?
bitcrshr•6mo ago
No worries of HTTP 418 here.
nojs•6mo ago
Finally the Java logo makes sense.
happycube•6mo ago
Someday this should be upgraded to an 8th or 9th gen core i7. ;)
iammrpayments•6mo ago
I don’t know what the pipes are made of, but doesn’t look like something I’d like to heat and run my water through it before drinking it
ZiiS•6mo ago
Usually PVC not dissimilar to your home plumbing; but yes at temperate it can leach.
dougdude3339•6mo ago
The tubing and pumps are food safe, however, the radiators and cooling block are not. It's a special tasting cup of coffee best consumed in moderation.
Lio•6mo ago
I’d like to see this project extended with AI to work out what drink the user really wants before dispensing a drink almost, but not entirely, unlike tea.

Share and enjoy!

yupyupyups•6mo ago
>The coffee is too cold.

Don't worry, I'll run an Electron app.

inciampati•6mo ago
Now do mayonaise.
TZubiri•6mo ago
I'd just like to interject for a moment. What you're referring to as GE Coffeemattic PC, is in fact, GNU/GE Coffeemattic PC, or as I've recently taken to calling it, GNU plus GE coffeemattic. GE Coffeemattic is not a PC unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full PC as defined by POSIX. Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which pumps hot java today is often called "GE Coffeematic PC", and many of its users are not aware that it is basically the GNU system, developed by the GNU Project. There really is a GE Coffeemattic exists, and these people are using it, but it is just a part of the system they use. GE Coffeematic is the coffee kernel: the program in the system that allocates the machine's caffeinated resources to the other the user's physical space. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Coffeemattic is normally used in combination with the GNU operating system: the whole system is basically GNU with Coffeemattic added, or GNU/GE Coffeemattic. All the so-called "GE Coffeemattic PC" distributions are really distributions of GNU/GE Coffeemattic PC.
bawana•6mo ago
tap->coffeemaker->radiator->pc->cup. ?

really stupid arrangement. slurry from the coffeemaker clogging your rad and cooling block, not to mention corrosion

better would be RO water -> pc -> coffemaker no rad needed

reboot81•6mo ago
I need to make one of my own, when Im done fixing up an old bike for my fish.
nanomonkey•6mo ago
GPUs and alcohol distillation always seemed like a match:

I used to manage a scientific supercluster, heavily laden with GPUs. We were constantly consuming about 60kW of power. These GPUs were happy to run at 85C, which from other interests I knew to be the temperature where alcohol distillation occurred. I always wanted to install a heat exchanger and distill fuel with all of the waste heat.