Credo uno dei più belli ai quali abbia mai giocato
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Taking Electronics to a Different Level
One part wants 3.3V logic. Another wants 5V. What do you do? Over on the [Playduino] YouTube channel, there’s a recent video running us through a not-so-recent concern: various approaches to level-shifting.
In the video, the specific voltage domains of 3.3 volts and 5 volts are given, but you can apply the same principles to other voltage domains, such as 1.8 volts, 2.5 volts, or nearly any two levels. Various approaches are discussed depending on whether you are interfacing 5 V to 3.3 V or 3.3 V to 5 V.
The first way to convert 5 V into 3.3 V is to use a voltage divider, made from two resistors. This is a balancing act: if the resistors are too small, the circuit wastes power; if they are too large, they inhibit fast signals.
The second approach to converting 5 V into 3.3 V is to use a bare resistor of at least 10K. This is a controversial approach, but it may work in your situation. The trick is to rely on the voltage drop across the series resistor to either drop enough voltage or limit the current flowing through input protection diodes, which will clamp the voltage but also burn out with too much current flow.
The third approach to converting 5 V into 3.3 V is to use chips from the 74AHC series or 74LVC series, such as inverting or non-inverting buffers. These chips can do the level shifting for you.
The easiest approach for going in the other direction is to simply connect them directly and hope you get lucky! Needless to say, this approach is fraught with peril.
The second approach for converting 3.3 V into 5 V is to make your own inverting or non-inverting buffer using, in this case, an N-channel Enhancement-mode MOSFET. Use one MOSFET for an inverting buffer and two MOSFETs for a non-inverting buffer. Just make sure you pick N-MOSFETs with 3.3 V or 5 V gate drive voltage VGS. Alternatively, you can use a buffer from the 74HCT series.
The video provides a myriad of approaches to level shifting, but you still have to decide. Do you have a favorite approach that wasn’t listed? Have you had good or bad luck with any of the approaches? Let us know in the comments! For more info on level shifting, including things to watch out for, check out When Your Level Shifter Is Too Smart To Function.
youtube.com/embed/4bitY6zHLP0?…
#11yrInvasionOfUkraine
Hanukkah menorah lit on Kyiv's Independence Square
In Kyiv, the first candle of the Hanukkah menorah was lit on Independence Square. — Ukrinform.Ukrinform
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With iOS 26.2, Apple lets you roll back Liquid Glass again — this time on the Lock Screen | TechCrunch
Your iPhone clock doesn't have to be so "glassy" anymore, thanks to a new Apple software update.Sarah Perez (TechCrunch)
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George Clooney is an actor.
Put him in the role of a surgeon in front of a camera, and he will do and say things the average non-surgeon viewer will agree are surgeonish. After an hour of that, we are, as average non-surgeon viewers, satisfied and entertained.
Put him in an operating theatre, and the patient will fucking die because he's not a surgeon and knows nothing about really doing surgery.
This is a post about LLMs.
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"But one of the starkest findings of the report is that the ultra-rich 0.001% control three times the wealth of the poorest half of humanity. Not only that, their wealth is growing at a faster rate – close to 5%, compared with 3.4%. (...)
But to give an idea of the disparity, the image below shows how big the bottom half is. Each dot represents one stadium of 56,000 people."
theguardian.com/news/2025/dec/…
‘The 0.001%’: a quick visual breakdown of the world’s wealthiest people
About 56,000 people control three times as much wealth as half of humanity. Here’s one way to illustrate thatOliver Holmes (The Guardian)
The image is a solid field of small, repeating squares. The squares are primarily green, with a slightly darker shade interspersed throughout, creating a textured, grid-like pattern. The squares are arranged in a uniform manner, covering the entire image area with no visible borders or empty space. There are no other elements or text present in the image. It appears to be a digital pattern or texture fill.
Provided by @altbot, generated privately and locally using Gemma3:27b
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Ma no, che attacco. È solo un'operazione militare speciale (cit.)
Attacco USA Venezuela, la temperatura sale: gli scenari futuroprossimo.it/2025/12/atta…
Attacco USA Venezuela, la temperatura sale: gli scenari
Il Center for Strategic Studies calcola "molto probabile" un attacco missilistico USA al Venezuela. Proviamo a capire insieme.Gianluca Riccio (FuturoProssimo)
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option one: press *all* *the* *buttons* until I find which ones are mapped to :, q and ! (hoping that those keys *are* mapped to some button)
option two: get an usb keyboard from my handbag, connect it to those usb-port-looking things in the front, enter :q!
option three: program an arduino-like board to emulate a keyboard and send the keys [esc]:q! every time a button is pressed, connect *that* to the usb-port-looking thing in the front
I think option three is the most reasonable and likely to succeed one
Ein Landschaftsbild, das durch einen Rahmen von grünen Blättern betrachtet wird. Im Vordergrund befindet sich eine Person, die mit dem Rücken zum Betrachter steht und auf eine Wiese blickt. Hinter der Person befindet sich ein großer Teich oder See, der von Hügeln und Bäumen umgeben ist. Im Hintergrund sind Berge zu sehen. Der Text auf dem Bild lautet: „The longer you spend in tech, the stronger the urge to buy a farm and never touch a computer again“.
Bereitgestellt von @altbot, privat und lokal generiert mit Gemma3:27b
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#WritersCoffeeClub 14th of December: Share how you tackle a first round of revisions.
The first round usually occurs when I'm copying a disjointed draft from a notebook onto my computer, and then I adjust as I go.
One sick motherfucker.
Trump Scraps Abolition Coins, Features Himself Instead
newrepublic.com/post/204397/tr…
#TrumpDidThis #RepublicansDidThis #GOPKakistocracy #AmericanFascistParty #Project2025 #NoRepublicansEverAgain #USPol
Trump Scraps Abolition Coins, Features Himself Instead
The Trump administration nixed commemorative coins meant to honor abolitionists and women in favor of honoring more old white men.The New Republic
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Living conditions are better in the country regions near Montbrison than they are in Saint Etienne from which this family was transferred
#Montbrison #SaintEtienne #Photography #LewisHine #ChildLabour #ChildLabor
loc.gov/pictures/item/20176818…
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Collettivo studentesco CRAVOS contro il ritorno della leva obbligatoria l Osservatorio contro la militarizzazione delle scuole e delle università
The richest man in the world, 500 years ago.
dw.com/en/how-the-worlds-first…
How the world's first global trader, Jakob Fugger, got rich
Some 500 years ago, Jakob Fugger was the richest man alive. The German financed emperors and popes, and reshaped global trade and banking to set the economic course for the modern world.Thomas Kohlmann (Deutsche Welle)
D'un roig encès
#photography
#fotografia
#landscape
#landscapephotography
#catalonia
#catalunya
#mountains
#fujifilm
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open.substack.com/pub/ilfinest…
Sta tornando Pinochet? Il Cile decide oggi
Il Paese che sognava una nuova Costituzione ora rischia di consegnarsi alla destra più dura e guardare al passato più nero.AndreaCegna (Il Finestrino - lo sguardo sul mondo di e con Andrea Cegna)
'We ain't buying it': It's time for an all-out food fight with Trump
alternet.org/trump-food-fight/
#TrumpDidThis #RepublicansDidThis #GOPKakistocracy #AmericanFascistParty #Project2025 #NoRepublicansEverAgain #USPol
'We ain't buying it': It's time for an all-out food fight with Trump
Hunger has a funny way of concentrating the attention.The cost of food and cutbacks in the provision of food for those who need it have been drivers of mass protest throughout much of history: One of the events initiating the French Revolution was th…Jeremy Brecher (Alternet.org)
#11yrInvasionOfUkraine
Dnipropetrovsk region governor shows damage from Russian attacks Shown in
In the Dnipropetrovsk region, drone and artillery strikes by Russian forces damaged homes, a business, and vehicles. — Ukrinform.Ukrinform
Una storia di ejecta in Arabia Terra settentrionale
L'obiettivo è esaminare l'ejecta proveniente da un cratere ben conservato. Si tratta di un luogo ideale per l'acquisizione di immagini perché è poco coperto da polvere, quindi sono visibili molti dettagli.
umbertogaetani.substack.com/p/…
Una storia di ejecta in Arabia Terra settentrionale
L’obiettivo di questa osservazione è esaminare l’ejecta proveniente da un cratere ben conservato.umberto gaetani (La macchina del tempo)
ximaar.wordpress.com/2025/12/1…
Dec-13: Calibri Too Woke
Ik blijf nog een beetje bij het wappie-regiem, dat in de USA de lakens uitdeelt. Een discipel van Mr T, Marco Rubio, heeft bedacht dat het lettertype calibri te woke is en dus vervangen moet worden…ximaar
I was trying to hide the description, what with it being Silent Sunday. It's also the only photo of me I'm likely to post on here (as it shows my fabulous knees).
maupao
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