Vertical Solar Panels are Out Standing
If you’re mounting solar panels, everybody knows the drill, right? Point them south, angled according to latitude. It’s easy. In a video which demonstrates that [Everyday Dave] is truly out standing in his field, we hear a different story. [Dave] has a year’s worth of data in his Solar Panel Showdown that suggests there are good reasons to mount your panels vertically.
Specifically, [Dave] is using bifacial solar panels– panels that have cells on both sides. In his preferred orientation, one side faces South, while the other faces North. [Dave] is in the Northern Hemisphere, so those of you Down Under would have to do the opposite, pointing one face North and the other South.
Since [Dave] is far from the equator, the N/S vertical orientation beats the pants off of East-West facing panels, especially in winter. What’s interesting is how much better the bifacial panels do compared to the “standard” tilted orientation. While peak power in the summer is much better with the tilted bifacial panels (indeed, even the tilted single-sided panels), in winter the vertical N/S panels blow them out of the water. (Especially when snow gets involved. Vertical panels don’t need sweeping!)
Even in the summer, though, there are advantages: the N/S panels may produce less power overall, but they give a trickle earlier and later in the day than the tilted orientation. Still, that extra peak power really shows, and over a six-month period from solstice-to-solstice, the vertical panels only produced 77% what the tilted bifacial panels did (while tilted single-sided panels produced 90%).
Is it worth it? That depends on your use case. If most of the power is going to A/C, you’ll need the extra in the warmer months. In that case, you want to tilt the panels. If you have a steady, predictable load, though, having even production winter/summer might be more to your liking– in that case you can join [Dave] in sticking solar panels straight up and down.
These results probably apply at latitudes similar to [Dave] who is in cloudy and snowy Ohio, which is perhaps not the ideal place for solar experimentation. If you’re not an Ohio-like distance from the equator, you might find an East-West array is the best bang for the buck. Of course if you really want to max out power from each individual cell, you can’t beat sun tracking regardless of where you are.
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Despite walk back, Pentagon access policy is unconstitutional nonsense
The Pentagon faced bipartisan backlash for its ridiculous policy requiring journalists to agree not to obtain or report “unauthorized” information. Now, in a response to an inquiry from the Reporters Committee for Freedom of the Press, officials are trying to walk it back.
They claim the rules were intended to restrict Pentagon staffers from giving unauthorized information to journalists, not to restrict journalists from printing “unsolicited” tips they’re given. We’re not buying it. We commend RCFP for getting the Pentagon to elaborate on the policy — but, despite lots of legalese and doublespeak, its clarifications are mostly meaningless.
As an initial matter, a policy solely aimed at government employees would not need to be distributed to or acknowledged by journalists. To the extent that the government is permitted to keep information secret, the Supreme Court says that’s the government’s responsibility — officials aren’t entitled to shift the burden to reporters to keep their secrets for them. Even crediting the Pentagon’s explanation, the memo was clearly intended to do exactly that. It sends a message to the press, and that message is “tread carefully.”
Nor can the government restrict the press to publishing unsolicited tips. News doesn’t fall from the sky into reporters’ laps. Reporters are entitled to ask questions, cultivate sources, and seek out news (otherwise known as reporting), as long as they don’t break the law in doing so. That’s the job description — they’re journalists, not stenographers.
Journalists should not agree to this ridiculous policy in exchange for … what, exactly? The honor of being lied to at news conferences?
The Pentagon’s position seems to draw from the Supreme Court case Bartnicki v. Vopper, which held that journalists can obtain information given to them by sources that obtained it illegally as long as the journalists didn’t themselves participate in the illegality. By soliciting information from sources, the Pentagon’s reasoning apparently goes, journalists participate in the sources’ violations of Pentagon policy.
But nothing in Bartnicki limits constitutional protection to unsolicited information — the only exception it acknowledges is when journalists participate in a source’s illegal acts (in that case, an unlawful wiretap). There is no analogous underlying illegality here.
The whole purpose of the First Amendment is so that the government can’t stop journalists from publishing what the government does not want published. We wouldn’t need a constitutional right to publish what the government authorizes to be released — the government would have no reason to try to prevent that.
That’s the fundamental point that seems entirely lost on this administration. The press exists to hold it accountable, not to keep its secrets or do its bidding.
The other point Pentagon officials are missing – as their response to RCFP makes clear — is that they’re not entitled to scream “national security” like magic words when they want the First Amendment to disappear. The response, disturbingly, reserves the right for the administration to unilaterally deem reporting a national security danger after the fact and punish reporters for it.
But as the Pentagon Papers case made extremely clear, that’s not how it works: “The word ‘security’ is a broad, vague generality whose contours should not be invoked to abrogate the fundamental law embodied in the First Amendment.” And that was a case involving a specific set of documents alleged to pose a threat — not a vague reservation of rights to declare hypothetical documents a threat.
And this administration is guaranteed not to invoke “national security” responsibly. It has claimed the right to deport journalists, activists, and op-ed writers who disagree with, or merely report or comment on its policies. The president has said that when officials want a journalist to give up sources, they can just “tell the reporter, ‘National security’.”
The Trump administration considers anything that threatens to harm its reputation or expose its lies a threat to national security. It considers the First Amendment and free press themselves threats to national security.
The Pentagon is essentially shifting its position from, “You can’t report anything we didn’t authorize you to report” to “You can’t report anything we didn’t authorize you to report unless we decide after the fact in our sole discretion that it’s OK.” That should not provide much comfort to journalists. They certainly should not agree to this ridiculous policy in exchange for … what, exactly? The honor of being lied to at news conferences?
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Hovercraft Suitcase Gives Your Luggage a Smooth Ride
The wheels on roller suitcases are one of their primary failure points. After the destruction of the wheel mount on her DIY suitcase, [Laura Kampf] wondered if it would be better to dispense with wheels altogether.
To give her suitcase a lift, [Kampf] decided to turn it into a hovercraft so it couldn’t be stopped by pavement or puddles. The first task was finding an appropriate fan, and a compact leaf blower donated it’s body to makerdom for the project. After reducing the blower to it’s constituent components and finding a secret turbo switch, work began on the momentum curtain.
“Nose-holing” the arrangement and size of the holes to pipe air through the stapled tarp and tape skirt seemed to be the bulk of the trial-and-error in this one. Based on other hovercraft designs [Kampf] found, keeping the holes near the center of the inflated portion gave better lift. In the end, the carry-on is able to lift a decent amount even on its lowest setting, resulting in a suitcase that is “not embarrassing” for travel. No word yet on what TSA thinks.
If you’re looking for another unexpected lift off, how about a full-sized flying Delorean replica? We’ve also covered some of the reasons why we don’t see more of these all terrain wonders.
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Direttiva anti-SLAPP: Parlamento recepisca la normativa nel provvedimento in esame alla Camera
@Giornalismo e disordine informativo
articolo21.org/2025/09/diretti…
Il presidente del Consiglio nazionale dell’Ordine dei giornalisti Carlo Bartoli è stato
50 anni dal “massacro” del Circeo. Latina non dimentica
@Giornalismo e disordine informativo
articolo21.org/2025/09/50-anni…
La fine di settembre 1975 e l’estate del 1976 rappresentano due date storiche che hanno segnato profondamente la storia del femminismo a Latina e la storia della nostra Associazione, oltre che mutare anche a
Una panchina per Mario Paciolla. 26 settembre, Imola
@Giornalismo e disordine informativo
articolo21.org/2025/09/una-pan…
Venerdì 26 settembre alle ore 17.00, nel Giardino “Europa Unita” nel quartiere Zolino, ingresso da via Gualandi, si terrà l’iniziativa “Una panchina per Mario”, un momento di memoria e riflessione per ricordare Mario
Rostagno, e quel pensiero vero di libertà
@Giornalismo e disordine informativo
articolo21.org/2025/09/rostagn…
“A cui’ apparteni chisto? A Trapani questo interrogativo è ricorrente, soprattutto quando davanti c’è chi mostra di poter avere un certo credito, una determinata presa, capace di attirare attenzione. Per forza deve avere un’appartenenza, una
Tube Furnace is the Real Hotness
We aren’t sure what [theglassman] is working on, but based on his recent projects, we think it is probably something interesting. He’s been decapping ICs, growing oxide on silicon substrates, and has built a tube furnace capable of reaching 1200 °C.
What would you do with something that can melt cast iron? We aren’t sure, but maybe you’ll tell us in the comments. We do have a fair idea of what [theglassman] is doing, though.
The core of the oven is a quartz tube. Insulation is via refractory cement and alumina ceramic wool. The heating itself is classic Nichrome wire and a tiny thermocouple. The real key, though, is to the proper controller. [theglassman] suggests a ramp/soak controller. These allow you to program sequences that heat up and then stop, which, if done properly, can prevent your fragile quartz tube from cracking.
Naturally, you need the tube furnace to grow oxides on silicon. It is less clear why he’s decapping ICs. We were nervous about his process of boiling down sulfuric acid (fuming nitrate works better, anyway, if you just want to remove the epoxy). If you want to remove everything like he does, sodium hydroxide will also work well.
Obviously, we need to keep an eye on [theglassman]. We are curious what he’s working towards. Maybe making a custom transistor? Or, dare we hope, a homemade IC?
Parioli, proteste per la nuova ciclovia
Servizio di Roberto Abela e Marco Bertolini
L'articolo Parioli, proteste per la nuova ciclovia su Lumsanews.
freezonemagazine.com/news/prim…
Con The Cure, Doja Cat, The xx, Gorillaz, Massive Attack, Addison Rae e My Bloody Valentine Mac DeMarco, Pinkpantheress, Skrillex, Peggy Gou, Lola Young, Father John Misty, Ethel Cain, Bad Gyal, Big Thief, Wet Leg, Little Simz, Slowdive, Kneecap, Alex G, Dijon e Blood Orange nella lista dei 150 nomi rivelati oggi. Una costellazione di artisti […]
L'articolo
Hey Fifa! Parliamone. Eye on palestine
Eye On Palestine
Hey Fifa, why is Israel still participating in the World Cup while they starve Palestinian children? You said that you aren't political, and yet you banned Russia just 4 days after they invaded Ukraine.Telegram
Moderators reversed course on its open door AI policy after fans filled the subreddit with AI-generated Dale Cooper slop.#davidlynch #AISlop #News
Due bug critici in Cisco ASA e FTD: score 9.9 e rischio esecuzione di codice remoto
Cisco ha reso note due vulnerabilità critiche che interessano i propri firewall Secure Firewall Adaptive Security Appliance (ASA) e Secure Firewall Threat Defense (FTD), oltre ad altri prodotti di rete. Entrambe le falle consentono l’esecuzione di codice arbitrario e potrebbero portare al completo compromesso dei dispositivi coinvolti.
CVE-2025-20363 (Score 9,0)
La prima vulnerabilità, identificata come CVE-2025-20363 e con punteggio CVSS 9.0 (critico), riguarda i servizi web di:
- Cisco Secure Firewall ASA Software
- Cisco Secure Firewall FTD Software
- Cisco IOS Software
- Cisco IOS XE Software
- Cisco IOS XR Software
Nel caso dei firewall ASA e FTD, la falla può essere sfruttata da un attaccante remoto non autenticato. Per le piattaforme IOS, IOS XE e IOS XR è invece necessario disporre di credenziali a basso livello di privilegio.
L’origine del problema risiede nella gestione non corretta degli input nelle richieste HTTP. Un aggressore può inviare pacchetti manipolati verso i servizi web esposti da un dispositivo vulnerabile, ottenendo la possibilità di eseguire codice arbitrario con privilegi root. Una compromissione di questo tipo può determinare il controllo totale del sistema.
CVE-2025-20333 (Score 9,9)
La seconda falla, già entrata all’interno del catalogo del CISA KEV, catalogata come CVE-2025-20333, ha un punteggio ancora più elevato: CVSS 9.9 (critico). Colpisce esclusivamente i firewall ASA e FTD quando è attivo il server VPN web.
Il difetto, anche in questo caso dovuto alla mancata validazione degli input in richieste HTTP(S), può essere sfruttato da un attaccante remoto in possesso di credenziali VPN valide. L’esito di un attacco riuscito è identico al precedente: esecuzione di codice arbitrario come utente root e potenziale compromissione completa del dispositivo.
Advisory Cisco e raccomandazioni
Cisco ha pubblicato due security advisory ufficiale relativo alla vulnerabilità CVE-2025-20333 e per la CVE-2025-20363. Il Cisco Product Security Incident Response Team (PSIRT) ha segnalato di essere già a conoscenza di tentativi di sfruttamento attivo della vulnerabilità legata al server VPN. Per questo motivo, l’azienda ribadisce l’urgenza di applicare gli aggiornamenti.
La vulnerabilità è stata individuata durante la risoluzione di un caso di supporto tecnico Cisco TAC, con il contributo di diverse agenzie di sicurezza, tra cui:
- Australian Signals Directorate – Australian Cyber Security Centre
- Canadian Centre for Cyber Security
- UK National Cyber Security Centre (NCSC)
- U.S. Cybersecurity & Infrastructure Security Agency (CISA)
Per verificare se un determinato dispositivo è vulnerabile, Cisco mette a disposizione il Cisco Software Checker, che consente di:
- Identificare gli advisory che interessano una specifica release.
- Individuare la prima versione software che corregge il problema.
- Determinare la release che risolve tutte le vulnerabilità note.
Conclusioni
Le vulnerabilità CVE-2025-20363 e CVE-2025-20333 rappresentano rischi significativi per l’infrastruttura di rete aziendale. La possibilità di eseguire codice arbitrario come root rende i dispositivi interessati particolarmente esposti a compromissioni complete.
Cisco invita pertanto i clienti ad aggiornare senza ritardi i firewall ASA e FTD, seguendo le indicazioni riportate nell’advisory ufficiale disponibile al link:
L'articolo Due bug critici in Cisco ASA e FTD: score 9.9 e rischio esecuzione di codice remoto proviene da il blog della sicurezza informatica.
Surprisingly Refined Perpetual Motion Device Teardown
Perpetual motion devices are either a gag, a scam, or as in the case of this particular toy that [Big Clive] bought on AliExpress, a rather fascinating demonstration of a contact-free inductive sensor combined with a pulsed magnet boost for the metal ball. A cool part about the device is that it comes with a completely clear enclosure, so you can admire its internals while it’s operating. Less cool was that after unboxing the device wasn’t working as the detector wasn’t getting the 12 V it needs to operate, requiring a bit of repairing first.The crucial part of the perpetual motion device schematic with the sensor, MCU and coil. (Credit: bigclivedotcom, YouTube)
Based on the label on the bottom of the device with the creative model identifier P-toy-002, its standby current is 10 µA which ramps up to 3 A when it’s operating. This makes sense when you look at the two core components: the industrial inductive detector, and a rather big electromagnet that’s driven by a bank of three 10 mF, 35V capacitors, turning it into something akin to a coilgun. Annoyingly, an attempt was made to erase most of the IC package markings.
The circuitry isn’t too complex, fortunately, with an adjustable electromagnet coil voltage circuit combined with a MOSFET to provide the pulse, and a 78L12 regulator to generate the 12 VDC from the coil’s voltage rail for the sensor that is monitored by a MCU.
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The tech the Secret Service claims can be used to "disable cell phone towers" is very commonly used by ticket scalpers to game Ticketmaster.#SIMFarm #SIMBank #Tickets #TicketScalping #Ticketmaster
Ministero dell'Istruzione
🎶 #Milano, questa sera a partire dalle ore 19.30, presso il Duomo, si svolgerà il terzo incontro del progetto “Uto Ughi per i Giovani”.Telegram
Pentagon press restrictions are an affront to the First Amendment
FOR IMMEDIATE RELEASE:
The Washington Post reported today that officials plan to require Pentagon reporters to pledge not to gather or report any information that the government has not authorized for release, whether classified or unclassified. Violators risk having their press credentials revoked.
Freedom of the Press Foundation (FPF) Director of Advocacy Seth Stern issued the following statement:
“The Supreme Court has made clear for decades that journalists are entitled to lawfully obtain and publish government secrets. That is essentially the job description of an investigative journalist. The law is also clear that the government can’t require people to contract away a constitutional right, like the right to obtain and publish secrets, in exchange for a benefit, like access to government buildings or press credentials.“This policy operates as a prior restraint on publication, which is considered the most serious of First Amendment violations. As we learned in the Pentagon Papers case, the government cannot prohibit journalists from public information merely by claiming it’s a secret or even a national security threat. This is worse in a way, because the government isn’t only seeking to restrain specific documents it contends pose a unique threat, it’s seeking to restrain everything it doesn’t want the public to know. That is fundamentally un-American.
“In the meantime, journalists will need to decide whether they’re so dependent on physical access to the Pentagon that they’re willing to trade away their independence to retain it.
“I hope they won’t, and will find other ways to gather news. Agreeing not to look where the government doesn’t want you to look and, by extension, not to print what it doesn’t want you to print, is propaganda, not journalism. Caving to these kinds of demands would in some ways be the most outrageous capitulation yet, and there are plenty to choose from.
“Virtually every time this administration (and past ones) has tried to justify secrecy by claiming it’s protecting national security, its real agenda turned out to be saving itself from embarrassment or from having its lies exposed. There is no reason to think this is any different. Perhaps there are so many embarrassing documents at this point that it’s too difficult to keep finding bogus reasons to keep each of them secret. Maybe that’s why the administration is taking more of a wholesale approach to concealing records that may show wrongdoing, corruption, and incompetence.”
Please contact us if you would like further comment on the dangers this policy poses to press freedom in the United States.
È uscito il nuovo numero di The Post Internazionale. Da oggi potete acquistare la copia digitale
@Politica interna, europea e internazionale
È uscito il nuovo numero di The Post Internazionale. Il magazine, disponibile già da ora nella versione digitale sulla nostra App, e da domani, venerdì 26 settembre, in tutte le edicole, propone ogni due settimane inchieste e approfondimenti sugli affari e il potere
Multiple Palantir and Flock sources say the companies are spinning a commitment to "democracy" to absolve them of responsibility. "In my eyes, it is the classic double speak," one said.#News
ILS Vicenza - Linux Day 2025: 11 conferenze a Vicenza il 25 ottobre
vicenza.ils.org/2025/09/25/lin…
Segnalato da Linux Italia e pubblicato sulla comunità Lemmy @GNU/Linux Italia
Linux Day 2025 a Vicenza: privacy, sicurezza e sovranità del software al centro della scena Sabato 25 ottobre 2025, Vicenza si prepara ad ospitare una
𝙳𝚊𝚗𝚒𝚎𝚕𝚎 𝙼𝚒𝚌𝚌𝚒 🇪🇺 reshared this.
ILS Vicenza - Linux Day 2025: 11 conferenze a Vicenza il 25 ottobre
vicenza.ils.org/2025/09/25/lin…
Segnalato da Linux Italia e pubblicato sulla comunità Lemmy @GNU/Linux Italia
Linux Day 2025 a Vicenza: privacy, sicurezza e sovranità del software al centro della scena Sabato 25 ottobre 2025, Vicenza si prepara ad ospitare una
Dalla Flotilla al fronte est. L’informativa di Crosetto che lega aiuti e deterrenza
@Notizie dall'Italia e dal mondo
Il ministro della Difesa Guido Crosetto si è presentato a Montecitorio per fare il punto sui due dossier che segnano l’agenda della Difesa. Da una parte la gestione degli aiuti diretti a Gaza attraverso la Flotilla e il ruolo delle navi italiane,
La Marina protegge la Flotilla nel rispetto del diritto internazionale. Scrive Caffio
@Notizie dall'Italia e dal mondo
La pronta reazione del nostro ministro della Difesa di fronte all’uso di droni di provenienza non identificata contro imbarcazioni e cittadini italiani facenti parte della Global sumud flotilla trova fondamento nel diritto internazionale. L’invio della nave Fasan a protezione della vita e dei beni
Hacklab Cosenza - Hack The Data Center 2025 – Notte dei Ricercatori e delle Ricercatrici
hlcs.it/2025/09/25/hack-the-da…
Segnalato da Linux Italia e pubblicato sulla comunità Lemmy @GNU/Linux Italia
Dopo il debutto dell’anno scorso, torna il laboratorio
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Trump's Crackdown on Anti-War Activists (w/ CODEPINK's Medea Benjamin), Chris Hedges
Trump's Crackdown on Anti-War Activists (w/ CODEPINK's Medea Benjamin)
Trump's threat to bring RICO charges against CODEPINK for their nonviolent, anti-war activism is only a symptom of the administration's broader attack on freedom of speech and dissent.Chris Hedges (The Chris Hedges Report)
La novella di San Francesco
@Politica interna, europea e internazionale
Per qualcuno sarà una buona novella, per altri una cattiva notizia. Dal 2026, il 4 ottobre, Festa di San Francesco d’Assisi – tornerà ad essere una giornata di festività nazionale. Scuole chiuse, uffici serrati, busta paga maggiorata per chi lavora quel giorno. Una nuova “giornata rossa” nel calendario Gregoriano. C’é una certa ironia nella storia.
freezonemagazine.com/rubriche/…
Per quel che riguarda personalmente Kees Popinga, si deve convenire che alle otto di sera c’era ancora tempo, perché a ogni buon conto il suo destino non era segnato. Ma tempo per che cosa? E poteva lui agire diversamente da come avrebbe poi agito, persuaso com’era che i suoi gesti non fossero più importanti di […]
L'articolo Georges Simenon – L’uomo
A volte mi sento inutile, di Mattia Marangon -newsletter
A volte mi sento inutile
Perché ci sentiamo così piccoli davanti a un mondo così complesso.Mattia Marangon (Edamame)
freezonemagazine.com/news/il-p…
Free Zone Magazine segnala volentieri questa bella iniziativa di una realtà che ci è entrata nel cuore dopo averla recentemente visitata. Un ricco programma di iniziative e proposte caratterizza l’annuale festa della comunità Il Pellicano di Castiraga Vidardo (Lo) che ormai da oltre tre decenni promuove e valorizza l’integrazione sociale della persona e
freezonemagazine.com/news/erne…
In libreria dal 2 ottobre 2025 Consuelo ha solo quattro anni quando viene salvata dalle macerie del terremoto dell’Irpinia del 1980 che travolge anche Sapri. Adele e Paolo, una coppia segnata dall’impossibilità di avere figli, vedono in lei il dono inatteso di un futuro diverso. Ma il destino della piccola Consuelo intreccia passato e presente, […]
L'articolo Ernesta De Masi – Le spigolatrici
Il popolo che fa paura ai populisti
@Giornalismo e disordine informativo
articolo21.org/2025/09/global-…
Dunque, ricapitolando: la Global Sumud Flotilla è composto da oltre 70 barche provenienti e con equipaggi appartenenti a 44 paesi, salpati dai porti di Barcellona, Genova, Tunisi e Augusta. Gli italiani sono una cinquantina su oltre 15.000 partecipanti
Geplante Gesetzesänderung: Baden-Württemberg will Hürden für Videoüberwachung senken
OrionBelt©
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