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Doing well in your courses: Andrej's advice for success (2013)

https://cs.stanford.edu/people/karpathy/advice.html
153•peterkshultz•2h ago•63 comments

Compare Single Board Computers

https://sbc.compare/
17•todsacerdoti•1h ago•1 comments

The Trinary Dream Endures

https://www.robinsloan.com/lab/trinary-dream/
21•FromTheArchives•2h ago•23 comments

GNU Octave Meets JupyterLite: Compute Anywhere, Anytime

https://blog.jupyter.org/gnu-octave-meets-jupyterlite-compute-anywhere-anytime-8b033afbbcdc
33•bauta-steen•3h ago•1 comments

Replacement.ai

https://replacement.ai
734•wh313•5h ago•494 comments

What Are RFCs? The Forgotten Blueprints of the Internet

https://ackreq.github.io/posts/what-are-rfcs/
82•ackreq•4h ago•63 comments

The Spilhaus Projection-A World Map According to Fish

https://southernwoodenboatsailing.com/news/the-spilhaus-projection-a-world-map-according-to-fish
33•zynovex•1w ago•2 comments

Show HN: Duck-UI – Browser-Based SQL IDE for DuckDB

https://demo.duckui.com
153•caioricciuti•7h ago•51 comments

Show HN: Pyversity – Fast Result Diversification for Retrieval and RAG

https://github.com/Pringled/pyversity
45•Tananon•4h ago•5 comments

Infisical (YC W23) Is Hiring Full Stack Engineers

https://www.ycombinator.com/companies/infisical/jobs/0gY2Da1-full-stack-engineer-global
1•vmatsiiako•2h ago

The macOS LC_COLLATE hunt: Or why does sort order differently on macOS and Linux (2020)

https://blog.zhimingwang.org/macos-lc_collate-hunt
44•g0xA52A2A•6h ago•7 comments

Show HN: Notepad.exe – macOS editor for Swift and Python (now Linux runtime)

https://notepadexe.com/
27•krzyzanowskim•3h ago•14 comments

How to Assemble an Electric Heating Element from Scratch

https://solar.lowtechmagazine.com/2025/10/how-to-build-an-electric-heating-element-from-scratch/
51•surprisetalk•5h ago•27 comments

The case for the return of fine-tuning

https://welovesota.com/article/the-case-for-the-return-of-fine-tuning
105•nanark•9h ago•50 comments

Thieves steal crown jewels in 4 minutes from Louvre Museum

https://apnews.com/article/france-louvre-museum-robbery-a3687f330a43e0aaff68c732c4b2585b
90•malshe•2h ago•55 comments

Lost Jack Kerouac story found among assassinated mafia boss' belongings

https://www.sfgate.com/sf-culture/article/lost-jack-kerouac-chapter-found-mafia-boss-estate-21098...
82•rmason•4d ago•46 comments

The zipper is getting its first major upgrade in 100 years

https://www.wired.com/story/the-zipper-is-getting-its-first-major-upgrade-in-100-years/
81•bookofjoe•3h ago•78 comments

Xubuntu.org Might Be Compromised

https://old.reddit.com/r/Ubuntu/comments/1oa4549/xubuntuorg_might_be_compromised/
218•kekqqq•4h ago•82 comments

Scheme Reports at Fifty

https://crumbles.blog/posts/2025-10-18-scheme-reports-at-fifty.html
20•djwatson24•4h ago•5 comments

The Spherical Cows of Programming

https://programmingsimplicity.substack.com/p/the-spherical-cows-of-programming
20•whobre•3h ago•23 comments

I wish SSDs gave you CPU performance style metrics about their activity

https://utcc.utoronto.ca/~cks/space/blog/tech/SSDWritePerfMetricsWish
31•ingve•1h ago•10 comments

Why an abundance of choice is not the same as freedom

https://aeon.co/essays/why-an-abundance-of-choice-is-not-the-same-as-freedom
78•herbertl•4h ago•34 comments

Show HN: Open-Source Voice AI Badge Powered by ESP32+WebRTC

https://github.com/VapiAI/vapicon-2025-hardware-workshop
27•Sean-Der•1w ago•3 comments

Ask HN: What are people doing to get off of VMware?

29•jwithington•1h ago•21 comments

Better SRGB to Greyscale Conversion

https://30fps.net/pages/better-srgb-to-greyscale/
3•ibobev•4d ago•0 comments

Windows 11 25H2 October Update Bug Renders Recovery Environment Unusable

https://www.techpowerup.com/342032/windows-11-25h2-october-update-bug-renders-recovery-environmen...
62•MaximilianEmel•3h ago•28 comments

Abandoned land drives dangerous heat in Houston, study finds

https://stories.tamu.edu/news/2025/10/07/abandoned-land-drives-dangerous-heat-in-houston-texas-am...
89•PaulHoule•5h ago•86 comments

Improving PixelMelt's Kindle Web Deobfuscator

https://shkspr.mobi/blog/2025/10/improving-pixelmelts-kindle-web-deobfuscator/
66•ColinWright•6h ago•13 comments

EQ: A video about all forms of equalizers

https://www.youtube.com/watch?v=CLAt95PrwL4
238•robinhouston•1d ago•72 comments

OpenAI researcher announced GPT-5 math breakthrough that never happened

https://the-decoder.com/leading-openai-researcher-announced-a-gpt-5-math-breakthrough-that-never-...
305•Topfi•7h ago•184 comments
Open in hackernews

MeshCore, a new lightweight, hybrid routing mesh protocol for packet radios

https://github.com/ripplebiz/MeshCore
101•cuu508•6mo ago

Comments

sparrish•6mo ago
I don't understand how this is different from Meshtastic. Can someone compare and contrast?
cschmittiey•6mo ago
so far it seems like better routing protocol, the ability to set what path your packets take if needed, and some different ideas about roles on the network. i’ve been playing with it for a week or so and people at my hackerspace have been contributing and i’m excited to see how it does, but it’s not good enough to the point where everyone is just going to switch over. some board support and polish needed before that happens imo
aeblyve•6mo ago
Meshtastic has unicast next-hop routing since firmware version 2.6 released, like, a week ago.
linker3000•6mo ago
About a month or so ago now in the alphas.
apitman•6mo ago
> Unlike Meshtastic, which is tailored for casual LoRa communication, or Reticulum, which offers advanced networking, MeshCore balances simplicity with scalability, making it ideal for custom embedded solutions., where devices (nodes) can communicate over long distances by relaying messages through intermediate nodes
sparrish•6mo ago
Yeah... that doesn't say anything. "Advanced networking"?

Meshtastic can also communicate over long distances by relaying through other nodes.

So what's the difference?

linker3000•6mo ago
Right now, Meshtastic's core comms protocol is based on flood messaging - no significant smart routing, although the Devs have recently introduced some route discovery features on private channels, but not in the public one.

MeshCore started out with the concept of static router nodes as well as clients, so it performs better if there is a router nearby to use, otherwise it falls back to flooding.

Nux•6mo ago
This ^.

I struggled to get messages delivered with Meshtastic in my location. I'll try Meshcore when I get some time.

jeffhuys•6mo ago
To provide another perspective: where I live, I can basically reach the entire country if I’m lucky (Netherlands) or my entire city when I’m extremely unlucky. It totally depends on the amount of people / nodes strengthening the network. I’m deploying nodes near dead spots up in trees and the like, with solar panels and batteries, to work even better and without power.
ConanRus•6mo ago
why don't just contribute to Meshtastic then?
linker3000•6mo ago
The devs involved apparently tried...then MeshCore became a thing.

You can read between the lines here.

meshtdevssuck•6mo ago
JAQing off eh?

Have folks ever tired to even communicate with the devs? They are the most toxic group of individuals that I have ever encountered. Saying that they act like children is insulting to little kids.

sunshine-o•6mo ago
Those are still very experimental and Reticulum is definitely a research project. So I don't mind them exploring different designs and ideas.

I believe the most important is to keep an option to be able to setup gateways between the different networks and if possible the messaging systems.

Like for example yggdrasil, tor, I2P dn42 and the clearnet are interconnected. What is really cool.

bb88•6mo ago
The previous version wasn't "flood" routing. Because flood routing would have worked better. I called it "spray and pray" routing.

It was something like this:

1. Router repeats first

2. Weakest repeating device by signal strength next

What if both of those options are in a basement, or say have a damaged antenna, or are miles in the opposite direction of where you want the signal to go?

By simply putting up a router somewhere you might be severely impacting the comms of people at your edge.

bb88•6mo ago
Meshtastic's routing system (up until this last version), wasn't great. I haven't tried the latest version, because it's gonna need to take a while for people to update their firmwares.

Also, a lot of nodes tend to flood their battery state for the entire network, which uses up the airtime for something that could be more important like routing information, and also wastes their battery.

Even though things like AlohaNet have been around for years, Meshtastic chose to reinvent the wheel. The primary difference is that Meshcore started with "routing" first, and then save the airtime and therefore battery for routing messages.

geerlingguy did a video on it, and it's highly worth while checking it out. I think he was kind enough to use the term "Beta".

Supposedly the new firmware from Meshtastic fixes a lot of this, but it's gonna be a while for people to upgrade, and I'm not too keen on wasting time again on something if it's not fit to work for it's stated purpose originally.

apitman•6mo ago
Really excited about all the new mesh networking protocols being worked on. As mentioned in the repo, also check out Meshtastic and Reticulum.

Would love to see something like this for Bluetooth/wifi. Maybe Wifi Aware will be that.

I think local-first networking is going to be an important part of local-first apps.

dfc•6mo ago
Reticulum will work over wifi.
ThinkBeat•6mo ago
In so far as communicating without going via the internet. This would work by 2 or more people sharing the same wifi network, but they they talked to each other would be over Reticulum?

Can a wifi mesh with no internet connection be made between different routers / access points?

Really I am wondering if people cooperating by operating wifi areas t could expand quickly in more populated places.

Perhaps the trick would be to run them all the wifi networks fully open?

Yeah basically how does one create a city wide mesh with a few hundred people involved?

apitman•6mo ago
How's the UX? I'm looking for something along the lines of my device uses bluetooth to scan for local devices, I select the ones I want to form a mesh with, the owners of those devices confirm, then we're in a hi-speed wifi mesh.
dccoolgai•6mo ago
Meshtastic UI is pretty far along that path right now. You can purchase a device for like $50ish that gives you a few miles of reach in the right conditions and has a decent UI built in (on the latest rev). If you want to run firmware on chips and use UI from your phone over Bluetooth you can run on like $12ish per endpoint.
apitman•6mo ago
It doesn't result in a high speed local network I could use for transferring files or hosting a LAN party though, right?
recrof•6mo ago
MeshCore also works via esp-now
brunoqc•6mo ago
Is radio like LoRa actually usable for useful things like file transfer, or is it more like a toy?
babuloseo•6mo ago
peopple have done loop to loop picture or video transfers so far, but usually higher bandwith is better, Lora supports 2.4ghz so probably do able in that range
aeblyve•6mo ago
"It depends". Out-of-the-box Meshtastic configurations are tailored more for relatively infrequent and short plaintext messages. You can look at nominal data rates here: https://meshtastic.org/docs/overview/radio-settings/#data-ra...

It is intentionally designed for longer range, with lower datarates, with lower power consumption. It's in the name. "LOng RAnge".

Not to be too annoying but "Radio like LoRa" reads to me as "microwave" which includes "WiFi" which is plausibly something you use for file transfer all the time. So some more clarification would be helpful.

0x1ch•6mo ago
Out of the box, it can be useful depending on the infrastructure of your area. I live in the Seattle area and we have a strong Meshtastic network here. I can occasionally even can see ACKs / testing from Vancouver CA. I own a node that sits at home all day and there's always messages being received in the public LongFast channels. The protocol makes use of all nodes for any type of messaging, so private channels also benefit.

As for files, not possible out of the box for most people, but tools like ATAK-Civ can make use of 'data packages' and send them over radio. I've used it to successfully send memes and map files in testing.

linker3000•6mo ago
A few people have implemented file transfers over Meshtastic. I believe there's a repo out there with Zmodem over Meshtastic.
Rebelgecko•6mo ago
It's not ideal for file transfer due to low speeds. But it's great for things like having a bunch of battery powered sensors in a field somewhere that report some telemetry every hour. Or in the meshtastic case, sharing your location and short text messages in areas without cell service.
zdp7•6mo ago
A big use for LoRa is sensor telemetry. Anything with low data speeds and are impractical to cover with a wired or Wi-Fi connections. Perfect for Ag and remote monitoring. Definitely not just a toy.
jeffhuys•6mo ago
There’s a lot of space between “file transfer” and “toy”.

If power goes out, or the internet, or both, I can still contact my entire family spread all around my city, because I gave them all a node to set up in their attic / on their roof. Additionally, they all got a t-deck charged and ready to go.

When shit hits the fan, at least we can find each other.

theshrike79•6mo ago
LoRa is optimised for low power usage and range. Not for moving 1TB 4k videos over the air.

So if you want to move your home videos from one place to another, or if you want to have a wireless security camera with 1080p streamed video, it's the wrong choice.

But if you want to have a battery powered motion detector + environment sensor in an off grid shed 1km that way, LoRa is perfect for that.

For example: I have a Meshtastic device in my car with a small 18650 battery + plugged in to the car's USB that charges it when it's turned on. It reports the car's location and internal temperature to a Meshtastic channel. It also works as a router so if I'm inside a store with my T1000-E, it can't reach the local relay, BUT it can reach my car, which in turn can reach the relay, which again is in range of my home node - which is connected to Home Assistant.

Yes, I could just send an IM, but where's the fun in that? =)

Calwestjobs•6mo ago
meshtastic plans to support more radios then only LoRa so worth updating,

so for example you can use esp32 lora node not only for lora low bandwidth comms but also high speed wifi transfers, for example pictures of intruders !

no just joking.