Hacker News: lormayna

New comment by lormayna in "Ask HN: What are tools you have made for yourself since the advent of AI?"

lormayna — Tue, 09 Jun 2026 06:55:28 +0000

Fiorentina, in Serie A. After 11 matches we have only 4 points and we won the first match only in December: in the past nobody got saved with a so bad performances in the first matches.

New comment by lormayna in "Ask HN: What are tools you have made for yourself since the advent of AI?"

lormayna — Tue, 09 Jun 2026 05:57:37 +0000

My favourite football team was really at risk of relegation, then I created for me and my friends an MCMC bayesian simulator to estimate the relegation match by match. It was an opportunity to get used in real life to some concepts (MCMC, Metropolis-Hastings, etc) that I always struggled to understand. And my team got saved from relegation with an amounts of points very close to the number of points that my model forecasted

I also wrote an honeypot that emulate an Ollama instance: beside the attackers, it's funny how many people are looking for free inference. Somebody from Brazil try to use my honeypot to write to chapters of a book about traditional magic rituals. My next step is to extract the data collected by this tool to extract IoC and malicious prompts and share them with the community.

In the same scope I wrote also an Ollama scanner: it fetch from Shodan the open Ollama instances, verify that they are reachable and check if they are real sending a dummy query.

New comment by lormayna in "I'm Getting into Mesh Networks (Meshtastic, MeshCore, and Reticulum)"

lormayna — Thu, 28 May 2026 15:37:06 +0000

Agree! And we need also to consider that a mesh protocol for Meshtatic/Meshcore should support mobility and have to run in a low power devices

New comment by lormayna in "I'm Getting into Mesh Networks (Meshtastic, MeshCore, and Reticulum)"

lormayna — Thu, 28 May 2026 06:39:36 +0000

I am an happy user of Meshstastic since more than one year (I have two active nodes and a third one is in the making). I am living in hilly countryside and the difficult that I have experienced is about reaching other nodes: with the standard antenna, I can barely connect with nodes in a 500 meters range, with a better antenna (coaxial collinear is the best IMHO) I can reach more than 10km.

I don't think the Meshstatic approach of "flooding" the network with all the messages can be scalable in the long run, they need to implement some sort of routing protocols (like BATMAN), but they are heavy and complex to implement

New comment by lormayna in "Lombardy increases charges for the construction of data centres in green areas"

lormayna — Wed, 27 May 2026 16:35:39 +0000

Italian here: as the first reading, I thought it was an usual decision against progress and technology. But reading the article it seems a good sense rule: Lombardy was one of the most industrialized zones of Europe and now is migrating to a post industrial model. This law should force reusing the old and unused industrial spaces instead that wasting space in agricultural areas.

New comment by lormayna in "How Shamir's Secret Sharing Works"

lormayna — Tue, 26 May 2026 15:32:07 +0000

My master thesis was about an application of SSS to mesh networks: even if one of the node of the mesh was captured by an attacker and the secret retrieved from the node, it was impossible to crack the whole encryption.

New comment by lormayna in "Kv4p HT – A homebrew 1W radio (VHF or UHF) that plugs into an Android phone"

lormayna — Tue, 19 May 2026 05:48:04 +0000

Only on the paper, the real power is around 3/3.5W

New comment by lormayna in "OpenBSD Stories: The closest thing to cute kittens (OpenBSD/zaurus)"

lormayna — Fri, 08 May 2026 06:12:56 +0000

When I was a poor student, Zaurus was probably my biggest tech gadget dream. Unfortunately it was rare and expensive and I never had the opportunity to play with it.

New comment by lormayna in "BYOMesh – New LoRa mesh radio offers 100x the bandwidth"

lormayna — Sun, 03 May 2026 19:45:56 +0000

6 miles seems a very optimistic estimation: 2.4Ghz propagation is very reduced by obstacles like buildings or trees and at that frequency the atmospheric water (fog, rain, humidity) have a big impact on propagation. And you need also to consider that 2.4Ghz is a very polluted band, then the noise floor is significatevly higher than in the 865/915 Mhz. Moreover at 2.4Ghz the Fresnel window is smaller and the risk of multipath fading is higher.

New comment by lormayna in "BYOMesh – New LoRa mesh radio offers 100x the bandwidth"

lormayna — Sun, 03 May 2026 18:47:13 +0000

Propagation (FSPL) is a lot better at 868/915 Mhz than 2.4Ghz. What is the advantage to have a "super BLE", that can propagate for few hundred meters?

New comment by lormayna in "The quiet resurgence of RF engineering"

lormayna — Tue, 28 Apr 2026 12:12:18 +0000

Also for a student: I was at university 20 years ago and there was no possibility to "hack" RF devices. Right now, with less than 200€ (a NanoVNA and a good SDR), you can do almost everything.

New comment by lormayna in "Aspartame is not that bad? (2022)"

lormayna — Fri, 24 Apr 2026 14:41:10 +0000

There is a waste area in the Italian society that is very prone to the conspiracy theory. Some famous journalists and some TV shows are very good in spreading this news. In the past, a party (M5S, now pivoting to a left wing, populistic, pro Putin movement) took 34% at the election, just taking advantage of those crazy ideas.

New comment by lormayna in "Aspartame is not that bad? (2022)"

lormayna — Fri, 24 Apr 2026 14:19:30 +0000

Not a medical professional, but inflammation is something different from cancer that they mentioned in their website. And we need to understand also the trial scenario: in the one about 5G they expose rats for more than 20 hours to a radio power more than 10 the law limits.

New comment by lormayna in "Aspartame is not that bad? (2022)"

lormayna — Fri, 24 Apr 2026 13:03:47 +0000

In Italy we have an "indipendent research lab" that become really famous for a study that demonstrates that aspartame may cause cancer. The same institute published few years later a study about 5G emissions that may cause cancer.

New comment by lormayna in "Ask HN: What Are You Working On? (April 2026)"

lormayna — Mon, 13 Apr 2026 19:30:14 +0000

I am trying to learn Rust. Not an easy task at all.

New comment by lormayna in "How Passive Radar Works"

lormayna — Sat, 11 Apr 2026 11:59:30 +0000

This is a very good point to start: https://www.rtl-sdr.com/tag/passive-radar/

If you have more than one receiver, the main issue is time sincronisation between the receivers.

Using the two transmitters will complicate things a lot

New comment by lormayna in "Show HN: TinyOS – A minimalist RTOS for Cortex-M written in C"

lormayna — Sat, 04 Apr 2026 06:26:28 +0000

I did my master thesis working with that in 2006. It was fun but challenging to work with a so primitive OS (no memory dynamic allocation, etc.) and so many bugs.

New comment by lormayna in "A laser-based process that enables adhesive-free paper packaging"

lormayna — Sun, 29 Mar 2026 13:35:10 +0000

Close where I am living (Tuscany) there is a small industrial district focused on adesive paper production. I had sent this link to a friend of mine that is working as plant manager for one of those.

New comment by lormayna in "The 'paperwork flood': How I drowned a bureaucrat before dinner"

lormayna — Sun, 29 Mar 2026 13:29:28 +0000

In Italy, in the past people starts paying tickets that they think unfair completely in coins. The government had to introduce a maximum amount that you can pay in coins to protect the employees that otherwise will spend day on counting cents.

Zvec – A lightweight in-process vector database

lormayna — Sat, 21 Mar 2026 07:29:41 +0000

Article URL: https://zvec.org/en/

Comments URL: https://news.ycombinator.com/item?id=47464813

Points: 9

# Comments: 2