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Regolare la luminosità di una lampadina (bassa potenza) a 12V con un transistor NPN 2N2222

Posted on May 29, 2024 by Michael G
In questo video, vi mostrerò come regolare la luminosità di una lampadina a bassa potenza (12V) utilizzando un transistor NPN 2N2222 e un Arduino. Questo progetto è ideale per chi vuole imparare a controllare la potenza fornita a un carico variabile utilizzando un transistor e il controllo PWM (Pulse Width Modulation) di Arduino.

Cosa Imparerai:
Componenti Necessari:

Arduino (qualsiasi modello)
Transistor NPN 2N2222
Lampadina a 12V
Resistenze (per limitare la corrente)
Breadboard e cavi di collegamento
Alimentatore 12V (o batteria)

Principio di Funzionamento:

Come funziona un transistor NPN
Concetti di base del controllo PWM per regolare la luminosità
Connessioni Elettriche:

Schema di collegamento tra Arduino, transistor 2N2222, e lampadina
Come collegare correttamente il transistor per gestire la potenza della lampadina
Codice Arduino:

Scrivere il codice per generare segnali PWM con Arduino
Esempi di codice per variare la luminosità della lampadina tramite un potenziometro o comandi digitali
Test del Progetto:

Come caricare il codice sull’Arduino
Verifica del funzionamento del sistema: dimostrazione della regolazione della luminosità della lampadina

Avvertenza:
Assicurati di seguire tutte le precauzioni necessarie quando lavori con l’elettronica per evitare danni ai componenti o a te stesso.

Se questo video ti è stato utile, non dimenticare di lasciare un like, condividere e iscriverti al canale per altri progetti interessanti! Buona visione!

Como estão os novos partidos políticos da Irlanda a responder à crise da imigração?

Posted on May 29, 2024 by Michael G
Representantes dos novos partidos políticos da Irlanda alinham-se para explicar por que a imigração está no topo das suas prioridades políticas para as eleições europeias de 2024.

Pithapuramలో SVSN Varma ఓపెన్ ఛాలెంజ్.. ఆస్తి మొత్తం పందెం కాస్తా.. ఎవడికైనా దమ్ముందా..? | Filmibeat

Posted on May 29, 2024 by Michael G
Pithapuram TDP leader SVSN Varma Challenge on Pawan Kalyan Victory.
ఆంధ్రప్రదేశ్ అసెంబ్లీ ఎన్నికల్లో హాట్ టాపిక్‌గా మారిన సెగ్మెంట్ పిఠాపురం.

#Pithapuram
#SVSNVarma
#SVSNVarmaOpenChallenge
#PawanKalyan
#Janasena
#TDP
#NaraChandrababuNaidu
#AndhraPradeshAssemblyElection2024
#APAssemblyElection2024
#APElectionExitPolls2024
#LoksabhaElection2024
#AndhraPradesh

~ED.232~PR.39~HT.286~

Welcoming Partners into the Wikimedia Ecosystem: Lessons from ESEAP Conference 2024

Posted on May 29, 2024 by Michael G
The ESEAP Conference 2024 was successfully held in Kota Kinabalu from May 10th to 12th, 2024. The event was attended by nearly 150 Wikimedians from…

Drupal Core News: Announcing Drupal Starshot sessions

Posted on May 29, 2024 by Michael G

A few weeks ago at DrupalCon Portland, I announced Drupal Starshot, a project to create the new default download of Drupal. Built on Drupal Core, Drupal Starshot will include popular features from the contributed project ecosystem. It focuses on delivering a great user experience right out of the box. Drupal Starshot builds on recent initiatives like Recipes, Project Browser, and Automatic Updates to elevate Drupal to new heights.

The response has been incredible! Hundreds of people have pledged their support on the Drupal Starshot page, and many more have asked how to get involved. Over the past few weeks, we have been planning and preparing, so I’m excited to share some next steps!

We’re launching a series of sessions to get everyone up to speed and involved. These will be held as interactive Zoom calls, and the recordings will be shared publicly for everyone to watch at their convenience.

The main goal of these Zoom sessions is to help you get involved in each area. We’ll cover details not included in my keynote, update you on our progress, and give you practical advice on where and how you can contribute.

We’ve scheduled six sessions, and we invite everyone to attend. The first one will be on this Friday on participation, funding, and governance! You can find the latest schedule online at https://www.drupal.org/starshot#sessions and the core calendar in the sidebar of the Drupal core news page.

We look forward to seeing you there and working together to make Drupal Starshot a success!
 

Gemfile of dreams: the libraries we use to build Rails apps

Posted on May 29, 2024 by Michael G
From time immemorial, the Evil Martians team has worked on dozens of Ruby on Rails projects. Naturally, this involves a lot of Ruby gems. Some reflect our desire to be cutting-edge and use modern tools (or build our own!) Other gems are so flexible they’ve been used in most of our projects. Our development philosophies, programming habits, (and soul) are within this universe of Martian gems. So what would it look like if they were somehow able to converge into one gemfile—the ideal Martian Gemfile, the toolbox of the extraterrestrial Rails engineer? Gemfile of dreams: the libraries we use to build Rails apps

Ruby 3.1.6 Released

Posted on May 29, 2024 by Michael G

Ruby 3.1.6 has been released.

Ruby 3.1 series is now in the security maintenance phase. In general, we will fix only security issues in this phase. But we have several build failure issues after the release of Ruby 3.1.5. We decided to release Ruby 3.1.6 to fix these issues.

Please check the topics below for details.

  • Bug #20151: Can’t build Ruby 3.1 on FreeBSD 14.0
  • Bug #20451: Bad Ruby 3.1.5 backport causes fiddle to fail to build
  • Bug #20431: Ruby 3.3.0 build fail with make: *** [io_buffer.o] Error 1

See the GitHub releases for further details.

Download

  • https://cache.ruby-lang.org/pub/ruby/3.1/ruby-3.1.6.tar.gz

    SIZE: 20887803
    SHA1: 02832465f9b0f68b9fe2c443f9f602d6e840b2ca
    SHA256: 0d0dafb859e76763432571a3109d1537d976266be3083445651dc68deed25c22
    SHA512: 624555ab3681bd6663bca7cf3529a969b9f0f16928559cfb713c57f763506c8740410c9b460d946922994859189ef2b9956167bd31423cf2e3acbf5a30086fe1
    
  • https://cache.ruby-lang.org/pub/ruby/3.1/ruby-3.1.6.tar.xz

    SIZE: 15273916
    SHA1: 2671606a00d0ad564fb93f92d093590563c4e25b
    SHA256: 597bd1849f252d8a6863cb5d38014ac54152b508c36dca156f6356a9e63c6102
    SHA512: a3159648706d6d11ce9613201141e884b3accc69bf928c756de8a8f2b71d219886e91435d30cf2c30e85af31f87801138e10106344766100f1b80662c7244652
    
  • https://cache.ruby-lang.org/pub/ruby/3.1/ruby-3.1.6.zip

    SIZE: 25211787
    SHA1: 534e675022dc30c3674ee68a7b2fbe9300d64367
    SHA256: c21d16e7953d65d05824834e89d7e1a58ccf2bc018fe966f785774ea383f53db
    SHA512: f8b5a0fda8dc0248f29796a0b5b67f93a825a013b92b0db437ecf0a5ffaf06a800285999a0e9a61e890a8000dd2e2c081a6ecb5dae62b1045761a13fd87c397b
    

Release Comment

Many committers, developers, and users who provided bug reports helped us make this release.
Thanks for their contributions.

Posted by hsbt on 29 May 2024

Take the Cloud Native Security Survey

Posted on May 29, 2024 by Michael G

Share your insights to help improve cloud native security and receive 25% off your CloudNativeSecurityCon registration.

The post Take the Cloud Native Security Survey appeared first on Linux.com.

Finally an alternative to Big Tech, your new open-source mobile ecosystem – Mobifree

Posted on May 29, 2024 by Michael G

Have you ever wondered what it would be like to engage in a mobile ecosystem
outside of the watchful eye of the Big Tech giants and gatekeepers? A system
that includes everything from operating systems, to app stores, to cloud
services, messaging apps, email servers and more? A system that puts your
privacy first, believes in a democratic approach and healthy competition,
and a system that relies on open-source solutions to drive its software?
Welcome to Mobifree, a human-centered, ethical
alternative, that champions privacy over profit and believes in
collaboration, sustainability and inclusiveness.

Everyone is locked into a mobile phone ecosystem where the terms are
dictated by a handful of Big Tech companies all located in a single
country. From end users looking to download and use their favorite apps, to
developers who run into roadblocks when trying to get their solutions
published, to governments who are increasingly using apps as a way to
provide services to their citizens, we are all impacted by the gatekeeping,
data tracking, and railroading Big Tech is imposing on us in the current
mobile ecosystem. A new alternative is required to shape a better
future. And F-Droid is excited to be a part of creating that new mobile
ecosystem, together with our other partners in Mobifree.

Finally an alternative to Big Tech, your new open-source mobile ecosystem - Mobifree

For an average user, it is difficult to discern how you are being tracked,
where your private information is being saved, how it is being used and who
it is being sold to. As a long-standing champion of user and developer
rights, pushing for privacy over profit, F-Droid has always been committed
to upholding high open-source standards in the technology we create. For
more than 14 years, F-Droid has been developing solutions which act as
pieces of the alternative mobile ecosystem puzzle. So it was a natural fit
for F-Droid to become a contributing partner in the broader Mobifree
project.

Of particular emphasis is the impact this alternative mobile ecosystem will
have on the services governments provide their citizens. Governments at all
levels are providing services through mobile apps. And in many cases, mobile
apps are becoming the preferred way to access important services. These apps
are only available via the Apple App Store or Google Play. And installing
apps from those stores requires agreeing to their Terms of Services. Both
app stores were built on tracking users to sell their data, thereby giving
Apple and Google power over how citizens receive services from their own
governments. Even the governments themselves are beholden to the Big Tech
gatekeepers: citizens and government officials and employees must use apps
that are only published on Apple and Google.

Austria provides a few specific examples of how governments interact with
the current ecosystem at multiple levels. After COVID-19 countermeasures
forced schools to adopt online learning, many public schools required
education apps for their students, parents and teachers in order to stay
connected. Public health insurance providers require a specific app called
“Handy Signatur” to be downloaded in order for citizens to access their
accounts online. People with the Handy Signatur app can sign petitions, and
download vaccination certificates, sometimes required for work or leisure
activities. Without this app, it is much more work and effort and is
borderline impossible in some cases to engage in certain activities.

Governments around the world are taking action to reign in the dominance of
Big Tech. South Africa and the
UK
have changed their competition policy to include user freedom in what they
regulate.
Japan is working on new laws to open
up

their mobile markets. And even the US government and many individual US
states have sued Big
Tech

to stop monopolistic behaviors.

The EU is also taking a step towards creating distance between its citizens
and Big Tech gatekeepers. They passed a landmark law: the Digital Markets
Act
, representing a
whole new approach to tackling gatekeeper companies that aim to keep all
sorts of competition out. It builds upon the successes of the EU’s General
Data Protection Regulation (GDPR), taking an important step in a more
ethical, democratic and citizens-first direction. All of these efforts are
helping to open up possibilities for mobile users. And thanks to the
Mobifree partnership, funded by an EU Horizon Europe grant, F-Droid can
share open-source, privacy-driven solutions with a larger audience.

In fact Europe is already seeing significant changes as a result of the
Digital Markets Act (DMA). Google has shut out other app stores by ensuring
that they have a third-class user experience. The DMA means that Google is
now legally forbidden from giving preference to their own app store over
alternatives like F-Droid. Additionally, Apple has opened up to external
app stores for the first time ever. And while these are great first steps
in the right direction, regulations and litigation do not build
software. With this in mind, Mobifree is poised to take action on the new
opportunities in the market, to build an unprecedented mobile experience for
users and developers. One that centers around ethical practices, digital
sovereignty, fairness, sustainability and inclusiveness.

F-Droid will play a major role in this project, tasked with creating a
decentralized distribution system for developers to deliver apps to Android
users. The impact will be an opening of the app market for Android,
improving honest competition around app development. And a foundational
guiding principle is to provide privacy controls to users, without locking
anyone out from participating. The app distribution system will focus on a
3-party interaction between app developers, app stores and app users where
every party will have freedom of choice at all points of interaction. The
system will have no terms of service or even user accounts to sign up
for. Developers can publish their own apps, via their own repositories. Any
app store can use those repositories to provide users with a method to
install those apps. And if the app is open source, it can be included in the
main F-Droid.org repository, where it will be reviewed using F-Droid’s
proven ethical review process. Users will be given true choice in terms of
their apps and app store preferences, additional privacy guardrails and
increased transparency into what is happening with their data.

F-Droid is one participating organization who has joined forces to help
create this new mobile ecosystem. However, additional input, expertise,
inspiration and work will be needed in order to break the traditional
framework established by Big Tech. From community outreach to legal support,
from developers, to researchers and end users, we welcome all forms of
support. If you are a curious citizen interested in taking part in the
Mobifree movement, we encourage you to reach out to us at f-droid.org and
see how you can take part in this exciting mobile alternative.

(We will be tracking work under this
grant using the
Mobifree
label.
)

Open Source AI Definition – Weekly update May 27

Posted on May 29, 2024 by Michael G
Stay updated on the progress of the Open Source AI Defintion. This week, debates about acess to training data has been reopened and our FAQ page is starting to take shape!
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