Our hacker [John Duffy] wrote in to let us know about a video he put together to explain the design of his open-source multimeter, the HydraMeter.

If you’re interested in how the circuitry for a voltmeter, ohmmeter, or ammeter might work, this video is a masterclass. In this long and detailed video, [John] walks us through his solutions to various challenges he had while designing his own multimeter. We covered this multimeter last year, and this new video elaborates on the design of the HydraMeter which has been a work in progress for years now.

The basic design feeds voltage, current, and resistance front-ends into an Analog to Digital Converter (ADC), which then feeds into a microcontroller and out to the (detachable) display. You can find the KiCad design files on the GitHub page. There is also a write-up on hackaday.io.

The user interface for the meter is… opinionated, and perhaps not to everyone’s taste. In the video, [John] talks a little bit about why he made the UI work the way that it does, and he noted that adding a rotary range switch is a goal for version 2.0.

The case is 3D printed and [John] had glowing things to say about his Bambu printer. He also had glowing things to say about D-sub connectors, but he did not have glowing things to say about Solid Edge, the CAD software he used to design the case.

Thank you, [John], for putting this video together; it is an excellent resource. We look forward to seeing version 2.0 develop soon!

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hackaday.com/2025/07/20/design…

Un robot umanoide vestito con abiti casual, nello stile di un uomo medio, ha guadagnato una popolarità inaspettata in Cina. Soprannominato “Uncle Bot” su Internet, è diventato famoso grazie a un breve video che lo ritraeva mentre correva giù per una collina in pantaloncini larghi, scarpe da ginnastica e maglietta.

Il video è apparso sul canale cinese Douyin e poi è migrato sui social network occidentali, dove ha raccolto oltre 80 milioni di visualizzazioni. Nel video, il robot si muove con sorprendente velocità e stabilità, agita le braccia e scende con sicurezza lungo il sentiero, come se stesse partecipando a una gara, e lo fa con molto più controllo.

Da allora, Uncle Bot è stato avvistato in diverse situazioni. Visita templi, saluta i passanti, scatta foto con i tifosi e passeggia tranquillamente per angoli pittoreschi del paese. Osserva ragazzi che giocano a basket, come se stesse valutando la loro tecnica di lancio. In un altro, porta a spasso tranquillamente un cane robot, come un vero pensionato durante la passeggiata mattutina.

Dietro tutta questa simpatica goffaggine c’è un’ingegneria seria. Uncle Bot è in realtà un Unitree G1, prodotto dall’azienda cinese Unitree. Questo umanoide costa circa 16.000 dollari ed è progettato per operare in modo autonomo, interagire con le persone e muoversi con sicurezza in una varietà di ambienti. È dotato di lidar 3D, una telecamera di profondità Intel RealSense, microfoni, un corpo dinamico e articolato e persino un altoparlante integrato da 5 watt. Può correre, camminare e muoversi su terreni irregolari, e la sua batteria dura un paio d’ore di attività.

L’azienda non ha ancora dichiarato se il successo virale sia legato a una strategia di marketing, ma l’attenzione rivolta al modello ha già attirato un pubblico internazionale. Gli utenti paragonano il G1 ai primi prototipi di Boston Dynamics, solo più affascinanti e umani.

Potrebbe essere ancora più un meme che un prodotto pronto per l’adozione di massa, ma la sua comparsa nella vita reale rappresenta un passo avanti. I robot umanoidi stanno lasciando i laboratori e stanno diventando parte della vita quotidiana. Se i nostri successori meccanici sono altrettanto bonari e rilassati, forse i nostri timori di un film sulla rivolta dei robot erano vani.

La Cina sta mostrando risultati impressionanti nel campo della robotica, dai robot che cucinano bistecche a distanza agli umanoidi che promettono una settimana lavorativa di tre giorni . Unitree è già nota per aver realizzato un’alternativa economica al cane robot di Boston Dynamics, e ora l’azienda sta dimostrando di poter costruire robot parlanti che interagiscono con le persone.

L'articolo Uncle Bot, il robot umanoide che sta conquistando la Cina e spaventando gli USA proviene da il blog della sicurezza informatica.

Normally, mechanical devices like record players move smoothly, with well-greased contact surfaces enabling the tone arm to automatically move, the multi-record mechanism to drop down a fresh disc, and the listener to have a generally good time. Unfortunately, the 1972-era ITT KP821 record player that [Mark] got recently handed by a friend wasn’t doing a lot of moving, with every part of the mechanism seemingly frozen in place, though the current owner wasn’t certain that they were doing something wrong.

More after the break…

Fortunately, this record player was in exceptionally good condition.. The primary failure was that the BSR record player mechanism, with its many touching metal surfaces, was suffering from a bad case of solidified grease. Although this is easily fixed with some IPA and a lot of elbow grease, the biggest trick with these mechanisms is putting it back together after cleaning, with many seemingly randomly shaped parts and every single E-clip that the manufacturer could design for and source at the time.

With that complete, this just left some pot cleaning and replacing a busted fuse in the amplifier section. The selenium rectifier was still functional, as were the SGS TAA621AX1 audio amplifier ICs. Despite the age of this ‘portable’ record player, both its BSR mechanism and the twin speakers that are part of the record player are in remarkably good condition. Much like with a car, it seems that you just have to swap out the liquid-y elements before they turn into a solid.

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hackaday.com/2025/07/20/when-a…

Il 16 luglio, Mercedes-Benz ha annunciato con un comunicato stampa l’ampliamento della collaborazione con Microsoft, introducendo le più recenti soluzioni Office e strumenti di collaborazione, inclusa una versione aggiornata dell’app Meetings for Teams. Questa nuova funzionalità consente di partecipare a videoconferenze direttamente dall’auto, sfruttando la videocamera di bordo, anche durante la guida.

Mercedes-Benz è inoltre diventata la prima casa automobilistica a integrare nativamente Microsoft Intune nel sistema operativo di bordo MB.OS, estendendo così le possibilità di lavoro da remoto direttamente in auto. Le due aziende hanno confermato anche il piano per l’integrazione di Microsoft 365 Copilot, l’assistente basato su intelligenza artificiale generativa, che renderà più efficiente la preparazione e la gestione delle riunioni.

Secondo quanto comunicato, queste nuove funzionalità debutteranno questa estate sulla nuova Mercedes-Benz CLA equipaggiata con il sistema MBUX di quarta generazione e MB.OS.

Grazie alla nuova app Meetings for Teams, i conducenti potranno partecipare a videoconferenze utilizzando la videocamera integrata del veicolo. Per garantire la sicurezza, il sistema rispetta le normative locali: durante la guida, lo schermo per la videoconferenza viene disattivato automaticamente, impedendo al conducente di visualizzare contenuti condivisi o presentazioni. La videocamera può essere disattivata in qualsiasi momento. L’app è stata inoltre ottimizzata per l’uso aziendale, offrendo una nuova interfaccia con l’anteprima della “riunione successiva”, accesso rapido ai contatti più utilizzati, chat migliorata e la possibilità di inserire testo tramite comandi vocali. È anche possibile passare dal calendario alla riunione di Teams con un solo tocco, per una transizione rapida e intuitiva.

Infine, il comunicato evidenzia lo sviluppo dell’integrazione di Microsoft 365 Copilot come uno dei primi assistenti collaborativi basati su intelligenza artificiale progettati per il mondo automotive. Gli utenti potranno sfruttare comandi vocali per sintetizzare rapidamente le email, ottenere informazioni sui clienti e organizzare appuntamenti, consentendo una gestione delle attività quotidiane più efficiente e sicura, senza distrazioni alla guida.

L'articolo Mercedes-Benz e Microsoft insieme per l’integrazione di Teams e Copilot 365 nelle auto da questa estate proviene da il blog della sicurezza informatica.

Dear Friend of Press Freedom,

It’s the 114th day that Rümeysa Öztürk is facing deportation by the United States government for writing an op-ed it didn’t like, and the 34th day that Mario Guevara has been imprisoned for covering a protest. Read on for more about how the government is stifling speech and reporting—and how to fight back.

Reporting isn’t ‘incitement,’ no matter what the government says

Not content with harassing journalists as they gather the news, the government is also increasingly threatening them with prosecution for reporting it.

At least three times now, the Trump administration has accused journalists who have reported on the government’s immigration crackdown of inciting violence or lawlessness. This raises the possibility that the government will attempt to prosecute journalists for incitement, the crime of instigating others to break the law.

Reporting the news doesn’t even come close to meeting the First Amendment standards for incitement. But the government is counting on its spurious accusations to silence reporting. Read more here.

FPF files complaint against judge who ruled for Trump in frivolous Pulitzer case

Freedom of the Press Foundation (FPF) and Demand Progress filed an ethics complaint against Edward Artau, a Florida judge who was nominated by President Donald Trump to a federal district court. The nomination came after Artau delivered a favorable ruling for Trump in his baseless lawsuit against the Pulitzer Board for not rescinding awards to journalists who were critical of Trump.

“Judges should be safeguarding us against President Trump’s frivolous attacks on the free press, the First Amendment and the rule of law. Instead, Judge Artau seems eager to facilitate Trump’s unconstitutional antics in exchange for a job … Attorney disciplinary commissions need to rise to this moment and not tolerate ethical violations that impact not only individuals before the court but our entire democracy,” said FPF Advocacy Director Seth Stern. Read more here.

Warren introduces presidential library bill

Trump’s presidential library has already received nearly half a billion dollars in known donations, including the settlement from his frivolous lawsuit against ABC. This is a staggering figure considering a library may never be built, and Trump’s CBS shakedown is poised to add to the haul.

This begs the question, is Trump using the ruse of building a library as a vehicle for funneling bribes? It’s possible, and a new bill introduced by Sen. Elizabeth Warren and endorsed by FPF would help put a stop to the potential corruption and make presidential foundations more transparent.

Read more about the bill here.

Gabbard fires FOIA officials after FPF request makes headlines

Director of National Intelligence Tulsi Gabbard has reportedly fired a Freedom of Information Act official who “facilitated” the release of a document to FPF in response to a records request we filed in April.

That document blew apart the Trump administration’s rationale for deporting Venezuelan nationals to El Salvador. The administration had also cited the supposed “fake news” to justify policy changes it claims allow it to investigate journalist-source communications.

FPF’s Daniel Ellsberg Chair on Government Secrecy Lauren Harper breaks down Gabbard’s attempts to stifle lawful disclosures and reporting and how we’re using FOIA to fight back. Read more here.

Fighting authoritarianism with transparency

Speaking of freedom of information, Harper joined NPR’s “1A” this week to discuss how government secrecy undermines the democratic process and what steps we can take to boost transparency.

With overclassification rampant, FOIA offices understaffed and underpowered, and the Trump administration exploiting loopholes to avoid transparency, we’re experiencing “dangerous levels of government secrecy,” Harper said.

But Harper also explained how specific reforms can increase transparency and help preserve our democracy. Listen here.

What we’re reading

ICE lawyers are hiding their names in immigration court (The Intercept). ICE lawyers shouldn’t hide their identities in court, and immigration judges shouldn’t condone the practice.

This disturbing trend must stop immediately.

Senate approves cuts to NPR, PBS, and foreign aid programs (NPR). Clawing back government funding for public media is an attack on every American who relies on it for news and emergency information.

How user-generated videos on social media brought Trump’s immigration crackdown to America’s screens (NBC News). This is exactly why we must defend the First Amendment right to record police in public and laws that protect against online censorship.

It’s not just the Epstein files. The Trump administration is withholding all kinds of public records. (MSNBC). FOIA is “certainly on life support,” said FPF’s Harper.

NJ reporter faces legal battle over police blotter (New Jersey Globe). “Prosecuting journalists for declining to censor themselves is alarming and blatantly unconstitutional, as is ordering the press to unpublish news reports,” explained FPF’s Seth Stern.

How factory farms criminalized journalism to block viral videos of animal cruelty (Rolling Stone). Even as they’re struck down for violating the First Amendment, ag-gag laws that limit the public’s access to information about the agricultural industry are becoming a model for cracking down on reporting on other industries, too.

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