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TIL USB Type C management ICs have a "dead battery mode".
USB Power Delivery requires that the source and sink chat over the port's configuration channel to negotiate the voltage and power to deliver on VBUS. But that requires the downstream battery-powered device to be sufficiently on to run that negotiation.
IOW, if the battery powered device depletes its battery and the USB management IC loses power, when you plug a charger into the USB port, there's nobody there for the power source to talk to, electrically it looks like the cable isn't connected to anything. And so per the spec, the source provides none volts on VBUS in that condition. Your device really needs power, but it can't ask for power until it has power, and until then it looks to the charger like it's not even there.
You don't need to implement USB PD to be a USB device. Instead, you can place some resistors across a couple of the port's lines, which signals to the upstream device that yes, there is a device connected, and no, it doesn't support USB-PD negotiation and you should just supply the default 5V/3A on VBUS.
Dead battery mode is a trivial dead man's switch: the USB-PD management chip has an input signal, that it expects the local CPU/MCU to hold at logic high to show that it's alive. While the signal is high, the configuration channel lines are passed through to the processor, which handles the handshaking and negotiating.
But if that lifeline signal goes low, or the USB-PD chip itself loses power, then the configuration channel gets disconnected from the local CPU, and the standard "5V/3A please" signal resistors get connected instead. With that, the next time you plug the device in, it'll get the default 5V/3A, and can use that to boot up the USB-PD management silicon, flick the switch again to get control of the configuration channel, and do the negotiation to ask for more power.
Given how much the datasheets tout this feature, I presume it wasn't there in the first generation of USB-PD ICs, and that's how we got a rash of battery-powered devices that die unrecoverably if you let them discharge completely.
That also suggests a hacky fix for such devices, if you're brave enough to crack them open: locate the chips in charge of USB port management, figure out what power rails they're running off of (likely 3.3V), find a convenient test point or connector on that rail, and hook up an appropriate external power supply to the rail. Effectively you're giving the circuit board a jump-start, enough juice that the circuitry that manages USB-PD can start up, at which point it'll go "oh shit look at this power source that would like to send me power!", negotiate for whatever main supply rail it wants, and the rest of the board will boot and start recharging the battery.
Though hopefully now that it seems that most USB-PD management ICs have this integrated dead battery mode, the need to ever do that will go away.
I guess technically you could also do the jump-start through the USB port, you just have to violate the spec and blindly supply 5V/3A on VBUS even if the sense resistors aren't there. Just long enough for sense resistors and/or configuration channel traffic to show up, then you can go back to obeying the spec.
... Come to think of it I expect aliexpress has a little cottage industry of boards that let you do exactly that...
Two slight corrections: you can't ask for "standard 5V/3A", you only ask for 5V. The available current is advertised by the source with Rp (which has 3 options: either USB standard 100/150/500/900mA, 1.5A or 3A), the device does not ask for it.
Also, providing 5V on VBUS without Rd on CC does not violate the spec. USB-C sockets are not supposed to do that, but plugs can. Otherwise USB A to C cables would be illegal.
Es gibt ein neues Beispiel dafür, dass sich in Deutschland eine Kultur der Meinungsunterdrückung etabliert hat. Alles, was nicht im links-woken Strom mitschwimmt, soll verschwinden. Jetzt trifft es eine neue Buchmesse.
Wie viel Quadratkilometer Algen wir auf der Erde haben, weis ich nicht. die #Tagespropaganda ... pardon, #Tagesschau jedenfalls sieht es als Plage an ... 🤡
Heavily armed Trump regime forces driven away by community resistance mid ICE raid in Los Angeles, scenes repeating all over the city where people are standing up to them. #3E #EndImpunity #StopICE
The two thumbs touching,Sacred mudra, opening of the vortex,The two parts of the hertzian spectrum become sinusoid.The brain wave is the surface through which the primary breath comes to bead,The f…
Friedrich #Merz reiste in die #USA, wollte sich als #Staatsmann präsentieren – doch #Trump ließ ihn regelrecht auflaufen.
Kaum #Sendezeit, keine Fragen von #Journalisten, stattdessen eine klare Botschaft: #BlackRock steht nicht über dem amerikanischen #Volk. Und Friedrich #Merz ist nicht der #Spieler, sondern die #Figur. Es war eine öffentliche #Machtdemonstration – verkleidet als diplomatisches Treffen. Eine Lektion in strategischer Kommunikation.
J’ai toujours su que cette croûte de quotidien était une mascarade à laquelle se prêtait l’énorme majorité de la population. J’ai toujours su que l’équilibre était fragile, qu’il suffisait d’un pas…
Né avec la révolution industrielle aux XVIIIe et XIXe siècles, le salariat évolue en se fracturant en sous-ensembles sous la pression d’un chômage toujours omniprésent, induisant exclusion, précarité et petits boulots.
Né avec la révolution industrielle aux XVIIIe et XIXe siècles, le salariat évolue en se fracturant en sous-ensembles sous la pression d'un chômage toujours omniprésent, induisant exclusion, précarité et petits boulots.
Aktuell ist es der Huawei-Skandal: Mitarbeiter des chinesischen Tech-Konzerns Huawei sollen mit Geschenken, Einladungen zu Fussballspielen und auch mit Geld EU-Abgeordnete und deren Mitarbeiter bestochen haben.
Le Madleen, navire humanitaire de la Freedom Flotilla Coalition, transporte des médicaments, de la nourriture et des produits pour bébés vers Gaza, où l’aide humanitaire ne rentre plus depuis le 2 mars. Plus de 90 % de la population connaît la famine.
À bord : 12 humanitaires et militant•es pacifistes, dont l’eurodéputée #RimaHassan et l’activiste #GretaThunberg
Alors que la Flottille approche de Gaza, les risques d’attaque ou de détention illégale par Israël s’intensifient. De précédents navires ont été attaqués par Israël causant des morts, des blessés ou encore la destruction du bateau.
10 expert•es de l’ONU ont appelé le 2 juin à garantir un passage sûr, rappelant que cette mission est légale et conforme au droit international.
🎯 Cette campagne vise à interpeller les gouvernements des pays dont sont originaires les membres de l’équipage et aux larges desquels le navire passera dans les prochains jours (France, Suède, Allemagne, Espagne, Brésil, Turquie, Pays-Bas, Grèce, Egypte) pour exiger :
Un passage sécurisé pour le navire
L’entrée sans entraves de l’aide humanitaire à Gaza
Le respect du droit international par Israël
Mobilisons-nous dès maintenant en envoyant des courriels aux autorités concernées ainsi qu’en les interpellant publiquement !
Plus nous amplifions ce message, plus nous contribuons à protéger la mission et l’équipage à bord ! 🛡️ ⛵
Les experts de l'ONU ont exigé un passage sûr pour le navire de la Coalition de la Flottille de la Liberté, Madleen ohchr.org/en/press-releases/20…
893 277 personnes ont envoyé une lettre au gouvernement israélien actionnetwork.org/letters/form… un avertissement aux dirigeants politiques et militaires israéliens. Nous les mettons en garde : tout préjudice causé aux #Madleen ou à ses volontaires sera considéré comme une grave violation du droit international.
In Defense of the Middle Class: When entrepreneur, NYU Business professor, philanthropist & UCLA Bruin 👌 Scott Galloway breaks down how the biillionaire class is destroying America... and how this will end. #economy #america #middleclass #scottgalloway #billionaires
[Édit : vu que ça s'emballe dans les commentaire, je précise que ce post en ironique, calmez vous les gens]
La France est autosuffisante en fruits, produits laitiers, viande et féculents. Mais pas en légumes, noix et graines ni poisson. Le constat est identique à l'échelle de l'UE.
Moi je dis : vivement la fin du monde que vous vous mettiez enfin à payer vos légumes à leur vrai prix et que je devienne millionnaire. [<-- l'ironie est perceptible là ! wink, wink 😉 ] #teamMaraicher
Von Alexander Heiden Fr, 6. Juni 2025 Es gibt ein neues Beispiel dafür, dass sich in Deutschland eine Kultur der Meinungsunterdrückung etabliert hat. Alles, was nicht im links-woken Strom mitschwimmt, soll verschwinden. Jetzt trifft es eine neue Buchmesse.
"My job was to preserve and provide access to the records of the Human Genome Project [#HGP]...All of that work, like so much else at #NIH, is currently being dismantled...The digital archival records my colleagues and I maintained are currently inaccessible. I worry that they might be gone altogether, either now or sometime in the future."
House Republicans’ tax bill would lead to nearly 11 million people losing insurance, providing a key source of savings to help finance President Trump’s tax cuts, according to projections that nonpartisan congressional scorekeepers published Wednesda…
UK buying weapons from Israel as it’s taken to court to stop them selling to Israel The Metropolitan Police is trialling new ‘Sandcat’ armoured vehicles across London – which are manufa…
Tune out the blah blah. This right here is why the climate crisis continues unabated and why we will cross 2ºC Emissions MUST fall by 5.5% THIS year and EVERY year thereafter until 2030 if we are to stand a remote chance of staying below 2ºC - there is ABSOLUTELY no sign of this level of reduction.
Reminder from last year: "We find that the economic damages resulting from climate change until 2049 𝙖𝙧𝙚 𝙩𝙝𝙤𝙨𝙚 𝙩𝙤 𝙬𝙝𝙞𝙘𝙝 𝙩𝙝𝙚 𝙬𝙤𝙧𝙡𝙙 𝙚𝙘𝙤𝙣𝙤𝙢𝙮 𝙞𝙨 𝙖𝙡𝙧𝙚𝙖𝙙𝙮 𝙘𝙤𝙢𝙢𝙞𝙩𝙩𝙚𝙙 and that these greatly outweigh the costs required to mitigate emissions in line with the 2 °C target." [Emphasis mine] #ClimateCrisis
Analysis of projected sub-national damages from temperature and precipitation show an income reduction of 19% of the world economy within the next 26 years independent of future emission choices.
Geplant als Vortrag an der Universität Wien, nach massiven Protesten verlagert und dann doch gehalten: Götz Kubitschek spricht über Ray Bradburys Roman »Fahr...
The Charlotte Lozier Institute study found almost 84% of emergency room visits from abortion pill complications were miscoded as due to miscarriage from 2016 to 2021.
Illinois lawmakers passed a measure allowing WHO guidelines to trump US safety rulings on abortion drugs, and radical pro-abortion Gov. Pritzker is expected sign it quickly.
They are telling us of their potential use of parliamentary supremacy AS THEY SEE FIT, hiding behind the #immigration issue to do so
We are getting dangerously close. Just remember that when they say they can make any law they want, they are #threatening us
Law for compulsory vaccination Law for compulsory purchase Law for compulsory quarantine Law for compulsory removal of gas meters
I could go on, but you get the picture
Never forget, they work for us. Laws are supposed to reflect our will. This is therefore where this superiority crap of theirs will slam into the political reality of governance by consent. Please please know how powerful that is. It is in fact our only tool to stop these diabolical shenanigans. Why do you think they work so hard to manufacture consent by spinning the narratives they do
alternative_right shares a report: New York state lawmakers voted to stop the NYPD's attempt to block its radio communications from the public Thursday, with the bill expected to head to Gov. Kathy Hochul's desk.
Ein klares Versagen der Chefs vom Dienst: #Klima darf nur menschengemacht sein, weil dies die #Rechtfertigung der #Degrowth - #Politik ist.
Hintergrund: Man lasse sich folgendes Zitat von #Rahmstorf und #Schellnhuber auf der Zunge zergehen:
„Das insgesamt wichtigste #Treibhausgas ist der Wasserdampf. Er taucht in der obigen Diskussion nur deshalb nicht auf, weil der Mensch seine Konzentration nicht direkt verändern kann.“
Der #Wasserdampf (1% der Atmposphäre) hat also Glück gehabt, dass der Mensch nichts gegen ihn tun kann. Sonst würde er besteuert statt des Spurengases CO2 (0,04%). Auch Sonne, Vulkane und Meere dürfen keinesfalls etwas mit Klimaänderungen zu tun haben.
Nach Ende des #Impfzwangs und gleichauf mit Krieg ist #CO2 - #Ablasshandel schließlich das profitabelste Geschäft der Welt. Siehe hierzu meine neue Sendung
DIAGONOSE, PROGNOSE, THERAPIE Welche Faktoren sind für unser Klima verantwortlich, wie kommt es zum weltweiten Klimawandel und welche Gegenmaßnahmen müssen ergriffen werden?
Wahrscheinlich wird es wieder der wärmste Mai seit #Wetteraufzeichnung gewesen sein, was uns erneut ermahnt, endlich dem #Klimawandel den Garaus zu machen. Sie merken es, der #Sarkasmus bahnt sich schon seinen Weg. Auch #München hat sich jetzt dem #Klima-Taler-Netzwerk angeschlossen und wirbt für das Angebot, sich ein besseres #Gewissen #tracken zu lassen. Hören Sie Nicolas #Riedls Kommentar „Der #Klima-Köder“.
From http://neverenoughrhodes.blogspot.com/2015/I was listening to the blistering Herbie Hancock rhodes solo in Joe Farrell's fantastic cover of Stevie...
Des pesticides néonicotinoïdes ont été retrouvés dans l’eau de pluie du Japon, ont révélé des chercheurs dans la revue Environmental Monitoring and Contaminents Research, le 31 mai. L’insecticide retrouvé le plus fréquemment dans l’eau est l’acétamipride, qui pourrait bientôt être réintroduit en France par la loi Duplomb.
Within our present high-speed digital landscape, we see an irrefutable fixation with the lives of famous people. Including cinema launches and best-selling albums to candid interviews and digital shares, fans are always looking for extra facts about their favorite celebrities. Most commonly looked up themes are famous people’s backgrounds and their birth years. These pieces of information not only fulfill inquisitiveness but also allow admirers to form a stronger bond with the celebrities they idolize.
A famous person’s profile is beyond being a list of accomplishments. It’s a glimpse of someone’s life path and career trajectory. When readers look up a public figure’s biography, they’re not just seeking to know where someone was from or what roles they’ve played. They want to understand the struggles, key moments, and defining moments that influenced the human behind the spotlight. For instance, discovering Zendaya’s journey from Disney Channel star to renowned actress and fashion figure adds context and inspiration to her success. Her profile doesn’t just list her achievements, but her approach to reaching those goals.
Years of life is a commonly queried point, and not just for mere curiosity. It often functions as a source of empowerment. When someone observes a young actress Millie Bobby Brown making it big as a teenager, it offers hope to ambitious youth. On the other hand, watching seasoned stars like Keanu Reeves dominate major film roles well into middle age proves that creativity and ability persist over time. Looking up celebrity ages give insight into the timing of their career path, highlighting the phases of their fame and how they’ve developed through the years.
Celebrity age usually consist of a comprehensive variety of private and career-related information. They usually commence with the person’s full name, date of birth, and birthplace. Afterwards, fans regularly are interested in the public figure’s childhood, domestic life, and their initial entry into the field. As their work develops, key achievements such as famous roles, awards, commercial endeavors, and charitable activities are often noted. Many also appreciate details on a star’s private affairs, such as their romantic involvements, interests, and even quirky interests that add human dimension. These biographies commonly feature hidden tidbits or interesting details that engage readers and deepen a star’s persona.
In a age where fake news can propagate swiftly, the value of credible and confirmed celebrity bios cannot be undervalued. Reliable platforms like the IMDb database, Variety magazine, and updated Wikipedia pages are regularly the main points of reference for reliable details. Whether you’re writing for a blog, media portal, or dedicated community page, it’s essential to regularly update content to display the fresh and reliable data about a celebrity’s age, latest endeavors, or personal milestones. The showbiz world changes swiftly, and present hearsay can easily evolve into trending topics, making timely updates a important factor of maintaining trust with readers.
Specific public figures generate ongoing interest when it comes to their profiles. Singer-songwriter Taylor Swift, for example, commands interest for her music, private affairs, and financial intelligence. Followers are always interested to learn about her evolving reputation and occupational progress.
Hollywood star Timothée Chalamet has ignited buzz thanks to his artistic background and quick ascent in the film industry. Pop icon Rihanna’s journey from singer to businesswoman and parent offers a layered and captivating story. Thor star Chris Hemsworth’s transformation into a international blockbuster actor and his real-world persona also keep fans clicking on his fresh developments.
Ultimately, public figures are more than entertainment icons. Their biographies demonstrate determination, grit, and originality. Whether someone is noticing a famous figure for the beginning, or watching their evolution for years, a carefully crafted biography and accurate personal facts link between notoriety and authentic experience.
Readers want depth beyond news—they want stories, value, and a purpose to engage. By crafting material that expresses the soul of who these public figures really are, you not only satisfy interest but establish a strong bond between stars and the public.
Leute reden vom Staat, als wäre er ein Beschützer.
Der Staat ist nichts dergleichen. Er ist eine perverse Struktur, die sich von uns nährt. Er produziert nicht, schafft nichts, er geht keine Risiken ein. Er extrahiert einfach. Er stiehlt uns Zeit, Kraft, unser Geld u. Lebenszeit.
The violence in Boulder and DC is atypical for the movement for Palestinian freedom. Even so, the anti-Zionist rhetoric, as justified as it may be, needs to be toned down.
The violence in Boulder and DC is very atypical for the movement for Palestinian freedom. Even so, the anti-Zionist rhetoric, as justified as it may be, need...
There is pretty much no end to the crafty sidelining by Western corporate media of truthful assertions by “Hamas-run” entities—and the simultaneous provision of ample space to the Israeli military to continue its established tradition of propagating outright lies.
Ich bin sicher, dass unsere bürgerliche Hauptstadtpresse diesen Angriff auf den Rechtsstaat mit genauso vielen Artikeln begleiten wird wie einen ACAB Pulli.
"By all means, donate to humanitarian aid organisations. But remember: this is political. It is not an inevitable disaster — it is a deliberate, strategic one. There are military, economic, and political interests behind this genocide.”
At the Cannes Film Festival, the UN’s special rapporteur on human rights in the occupied Palestinian territories, Francesca Albanese, speaks with EUobserver about the genocide in Gaza, and global complicity.
Ministerpräsidentin Meloni bezeichnete das Dekret als „einen entscheidenden Schritt zur Stärkung des Schutzes der Bürger, der schutzbedürftigsten Bevölkerungsgruppen und unserer Männer und Frauen in Uniform“.
Diderot et la volonté générale : Une critique éclairée du pouvoir
🤔💡 Découvrez la pensée critique de Diderot sur la "volonté générale". Entre scepticisme et défense des libertés, le philosophe des Lumières nous invite à repenser les fondements du pouvoir politique. #Diderot #VolontéGénérale #PhilosophiePolitique Diderot face à la volonté générale : Un scepticisme éclairé Denis Diderot, figure emblématique des Lumières, nous offre une réflexion nuancée et critique sur…
🤔💡 Découvrez la pensée critique de Diderot sur la « volonté générale ». Entre scepticisme et défense des libertés, le philosophe des Lumières nous invite à repenser les fondem…
Foucault : Critique du pouvoir des discours experts et redéfinition de la philosophie
📚 Découvrez comment Foucault critique le pouvoir des discours experts et redéfinit la philosophie 🤔. Il met en lumière les mécanismes de contrôle et propose une approche critique pour comprendre les structures de pouvoir 🌐. #Foucault #Philosophie #Pouvoir #DiscoursExperts 📖 Michel Foucault développe une analyse approfondie des mécanismes de pouvoir inhérents aux discours d'experts et…
📚 Découvrez comment Foucault critique le pouvoir des discours experts et redéfinit la philosophie 🤔. Il met en lumière les mécanismes de contrôle et propose une approche critique pour comprendre le…
dude i just wanted to document the interactions between laser projectors and fog (not dog, like water smoke). but i didn't have a fog machine nor wanted to boil enough water to fill the room with steam so now i'm high as shit because i had to smoke and blow too mucj of the joint into the laser to make it work awa
DOGE fired the people who built it, parasitized our organizations, and killed the project. But the Direct File codebase lives on. Paid for by American taxpayers, the code is yours.
"All code paid for by taxpayer dollars should be open source, available for comment, for feedback, for people to build on and for people in other agencies to replicate. It saves everyone money."
Musk and DOGE ally with unscrupulous vendors who want to profit from their monopoly on tax software.
"Vinton said that the Direct File team worked for a long time knowing that there were people within government and external companies who did not want the IRS to create Direct File."
It would be super cool if this turns into basically the reference implementation of tax code as software code, with a team of accountants and programmers keeping it up to date with legislations changes.
Dave Anderson
in reply to Dave Anderson • • •That also suggests a hacky fix for such devices, if you're brave enough to crack them open: locate the chips in charge of USB port management, figure out what power rails they're running off of (likely 3.3V), find a convenient test point or connector on that rail, and hook up an appropriate external power supply to the rail. Effectively you're giving the circuit board a jump-start, enough juice that the circuitry that manages USB-PD can start up, at which point it'll go "oh shit look at this power source that would like to send me power!", negotiate for whatever main supply rail it wants, and the rest of the board will boot and start recharging the battery.
Though hopefully now that it seems that most USB-PD management ICs have this integrated dead battery mode, the need to ever do that will go away.
Dave Anderson
in reply to Dave Anderson • • •I guess technically you could also do the jump-start through the USB port, you just have to violate the spec and blindly supply 5V/3A on VBUS even if the sense resistors aren't there. Just long enough for sense resistors and/or configuration channel traffic to show up, then you can go back to obeying the spec.
... Come to think of it I expect aliexpress has a little cottage industry of boards that let you do exactly that...
Sebastian Krzyszkowiak
in reply to Dave Anderson • • •Two slight corrections: you can't ask for "standard 5V/3A", you only ask for 5V. The available current is advertised by the source with Rp (which has 3 options: either USB standard 100/150/500/900mA, 1.5A or 3A), the device does not ask for it.
Also, providing 5V on VBUS without Rd on CC does not violate the spec. USB-C sockets are not supposed to do that, but plugs can. Otherwise USB A to C cables would be illegal.