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the return of the zombie bluefruit ez-link!

ADAFRUIT WEEKLY EDITORIAL ROUND-UP

We’ve got so much happening here at Adafruit that it’s not always easy to keep up! Don’t fret, we’ve got you covered. Each week we’ll be posting a handy round-up of what we’ve been up to, ranging from learn guides to blog articles, videos, and more.

BLOG

many many years ago we developed and sold a pair of products called ez-key (https://www.adafruit.com/product/1535) and ez-link (https://www.adafruit.com/product/1588) that implemented bluetooth classic HID and SPP respectively. they were popular because we actually did the two ‘right’ – with SPP having control lines for remote programming of boards that would normally use the RTS/DTR/CTS lines for auto-reset control.

to do the initial development we had to source CSR chipset BT modules, get them FCC certified and then develop for them using the very-unpleasant-and-totally-nda’d CSR firmware package and IDE. and then our module supplier closed shop and everything got extremely annoying to replace and recertify and we ended up discontinuing the line.

LEARN

IoT Food Scale with Azure and CircuitPython

In the NAU7802 Food Scale Learn Guide, you can build a food scale using CircuitPython, a NAU7802 STEMMA board and a strain gauge. In this guide, you’ll take that project and connect it to Microsoft Azure to log the weight measurements over time. Additionally, you’ll setup a text alert when it looks like you need to refill the food container.

Check out the full guide!

Tons of Updated LEARN Guides this week

Browse all that’s new in the Adafruit Learning System here!

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Adafruit Weekly Editorial Round-Up: Azure, CircuitPython, micro:bit beta testing, Updated learn guides, Eye on NPI and more!

the return of the zombie bluefruit ez-link!

ADAFRUIT WEEKLY EDITORIAL ROUND-UP

BLOG

LEARN

IoT Food Scale with Azure and CircuitPython

Check out the full guide!

Tons of Updated LEARN Guides this week

Browse all that’s new in the Adafruit Learning System here!

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'Star Trek' actor Nichelle Nichols passes away at 89

Nichelle Nichols, the actor who played Lieutenant Nyota Uhura on the original "Star Trek" series, has died. She was 89 and died of natural causes.

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Extremism in the military is a serious national security threat. The GOP needs to act like it

Germany is taking its problem with extremists in the military seriously.

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Architectural Expert Breaks Down Disney Castle Details

This delightful video from Architectural Digest lives at the fanciful intersection of architectural design and animated castles from Disney movies. I’m partial to Castle DunBroch from the movie Brave. As historian Meredith Cohen points out in the video, the depiction of the castle contains many inconsistencies (castles weren’t made from stone until the 11th century, while the movie is set in the 10th century, the castle is in active ruin, which generally wasn’t the case while castles were actually being lived in) and so on. Still, I love how the open-air, flawed, shadowy structure lends itself to the movie’s themes. Which Disney castle is your favorite?

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Ron DeSantis' blocking of legacy media coverage is dangerous for democracy

Republicans are increasingly seeking sympathetic media at their events. That's bad for accountability.

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суббота, 30 июля 2022 г.

Wormholes in Science Fiction #SciFiSunday

Just when you thought you had some idea about what Star Trek: Deep Space 9 was all about, and you were trying to figure out how you felt about a show about intrigue at a space station that’s also an embassy that’s also a casino, and were kinda worried about just where the Star Trek was in Star Trek: Deep Space 9, the wormhole unfurls. The now-stable wormhole transforms the space station into an intergalactic Casablanca. That is what a wormhole can do to a story: open it up to the universe. Here’s more from The Science Museum:

“Like everything in science fiction, wormholes vary across the genre from rigorously explored phenomenon whose scientific implications are the centerpiece of the story, to simple plot devices,” comments Glyn Morgan, Science Museum curator. “In our forthcoming immersive Science Fiction exhibition, for example, we make use of portals which harness wormholes as a way of transporting visitors to new locations”.

The science of wormholes dates back to 1916, when Ludwig Flamm at the University of Vienna realised that the equations behind a black hole have an equal but opposite solution, a ‘white hole’, which cannot be entered from the outside, although things can escape from them.

Learn more!

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Wormholes in Science Fiction #SciFiSunday

“Like everything in science fiction, wormholes vary across the genre from rigorously explored phenomenon whose scientific implications are the centerpiece of the story, to simple plot devices,” comments Glyn Morgan, Science Museum curator. “In our forthcoming immersive Science Fiction exhibition, for example, we make use of portals which harness wormholes as a way of transporting visitors to new locations”.

The science of wormholes dates back to 1916, when Ludwig Flamm at the University of Vienna realised that the equations behind a black hole have an equal but opposite solution, a ‘white hole’, which cannot be entered from the outside, although things can escape from them.

Learn more!

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The Last Journey of the Space Shuttle Endeavour #SpaceSaturday

Space Girl Badge Solder Kit

Space is like history. What we see of space, what space means means, and who gets to tell the story of space story changes with every new era. Sometimes the end of an era is invisible and we only notice it later, when academics figure out how to write nonfiction books with fun covers about the transition. But some are obvious, and one of the most obvious transitions was the spectacle of the space shuttle Endeavor cruising its way into history along the streets of Los Angeles. Here’s more from The Atlantic:

The space shuttle Endeavour is on its last mission today, a 12-mile creep through Los Angeles city streets on a 160-wheeled carrier. It is passing through neighborhoods and strip malls, headed toward its final destination, the California Science Center in South Los Angeles. At times, the shuttle has barely cleared trees, houses and and street signs along a course heavily prepared for the trip. The move will cost an estimated $10 million, according to the Exposition Park museum. Gathered here are a few images of Endeavour’s last journey.

See and learn more!

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The Last Journey of the Space Shuttle Endeavour #SpaceSaturday

Space Girl Badge Solder Kit

The space shuttle Endeavour is on its last mission today, a 12-mile creep through Los Angeles city streets on a 160-wheeled carrier. It is passing through neighborhoods and strip malls, headed toward its final destination, the California Science Center in South Los Angeles. At times, the shuttle has barely cleared trees, houses and and street signs along a course heavily prepared for the trip. The move will cost an estimated $10 million, according to the Exposition Park museum. Gathered here are a few images of Endeavour’s last journey.

See and learn more!

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Biden tests positive for Covid in 'rebound' case, has no symptoms

The White House doctor released a new letter indicating that despite testing negative for the past four days, President Joe Biden tested positive for Covid late Saturday morning. The letter also states the president is not experiencing any new symptoms and will enter isolation once again.

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пятница, 29 июля 2022 г.

Ron DeSantis to trans kids: Biden can’t save you

Florida’s Department of Education, backed by Republican Ron DeSantis tells schools to ignore Biden protections for transgender and LGBTQ kids tied to Title IX

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Why an unnamed ‘White House employee’ could be a pivotal Jan. 6 witness

Jan. 6 committee referenced an unnamed "White House employee" during Day 8 of hearings. Is it the same person Cassidy Hutchinson referenced in her testimony?

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Max Headroom Reboot in Development at AMC Networks #cyberpunk

Wow, I didn’t have this on my cyberpunk bingo card:

A 1980s pop culture mainstay is plotting a comeback. AMC Networks is developing a Max Headroom drama series reboot, with Matt Frewer set to reprise his role as the world’s first artificial intelligence TV personality. Halt and Catch Fire co-creator Christopher Cantwell is writing the adaptation and is attached as showrunner for the project, which is produced by Elijah Wood and Daniel Noah’s SpectreVision and All3Media.

Given the bizarro world we are now living it, which rivals anything we saw in the original Max Headroom series, we could use Max’s take-no-prisoners cultural commentary and bitraking journalism right about now.

Read the rest here.

More about Max Headroom on Adafruit:

20 Minutes Into the Future: The Unlikely Life and Times of Max Headroom #cyberpunk

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'We Met in Virtual Reality' is a real documentary filmed in a fake world. And it's awesome.

New HBO doc 'We Met in Virtual Reality' explores connections in the virtual world. The metaverse is coming, with Facebook (Meta) and Microsoft taking point.

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Max Headroom Reboot in Development at AMC Networks #cyberpunk

Wow, I didn’t have this on my cyberpunk bingo card:

A 1980s pop culture mainstay is plotting a comeback. AMC Networks is developing a Max Headroom drama series reboot, with Matt Frewer set to reprise his role as the world’s first artificial intelligence TV personality. Halt and Catch Fire co-creator Christopher Cantwell is writing the adaptation and is attached as showrunner for the project, which is produced by Elijah Wood and Daniel Noah’s SpectreVision and All3Media.

Read the rest here.

More about Max Headroom on Adafruit:

20 Minutes Into the Future: The Unlikely Life and Times of Max Headroom #cyberpunk

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New Products 7/29/2022 Featuring Adafruit Triple-axis Magnetometer – MMC5603 – STEMMA QT / Qwiic! (Video)

New Products 7/29/2022 Featuring Adafruit Triple-axis Magnetometer – MMC5603 – STEMMA QT / Qwiic! (Video)

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четверг, 28 июля 2022 г.

Buffett company settlement should be a blow to the 'compassionate billionaire' myth

Trident, a mortgage lender owned by Warren Buffett's Berkshire Hathaway, agreed to a settlement in a racial discrimination lawsuit filed by the Justice Department.

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gopro max 360 protective floating case #3DPrinting #3DThursday

Kreativling2137 shared this project on Thingiverse!

This is a case for the GoPro Max 360. If you insert some styrofoam it is floating in the water. The line is only for additional safety, not required.

You need 4 screws: M3x16 and 4 nuts.

You will not see the case in the video when making 360°-videos.

Printed with support, 0.2 mm, PLA

Download files : https://www.thingiverse.com/thing:5395740

Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

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Wall mount for Raspberry Pi Case #3DThursday #3DPrinting

Download the files and learn more

Shared by DavidPhillipOster on Thingiverse:

The original case for my Raspberry Pi 3B+ is my favorite, but it kept getting bumped and knocked down.

Here is wall mount that lets me insert and remove the Pi+case while it is still powered on.

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Dip and Squeeze Ketchup Caddy #3DThursday

faultedlogic shared on Thingiverse:

Dip and Squeeze Ketchup Caddy

This tray holds 14 of the .95 oz dip and squeeze ketchup packets.

The Adafruit Learning System has dozens of great tools to get you well on your way to creating incredible works of engineering, interactive art, and design with your 3D printer! If you’ve made a cool project that combines 3D printing and electronics, be sure to let us know, and we’ll feature it here!

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Dip and Squeeze Ketchup Caddy #3DThursday

faultedlogic shared on Thingiverse:

Dip and Squeeze Ketchup Caddy

This tray holds 14 of the .95 oz dip and squeeze ketchup packets.

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Top GOPers cry over Manchin's 'double cross' on spending agreement

Sen. Joe Manchin announced he reached a deal with Democratic leadership on a climate, health care and tax package — and Mitch McConnell and other Republicans aren't too happy.

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Democrats purposely boosting extremist Republicans is reckless and self-defeating

The DCCC’s ad buy is a fantastic deal for Trump World. But for the Democrats, it’s playing with fire.

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среда, 27 июля 2022 г.

Gaetz, subject of sex trafficking probe, votes against sex trafficking bill (again)

Republican Rep. Matt Gaetz, the subject of sex trafficking investigation, voted against a bill to protect victims of sex trafficking. It wasn't the first time.

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A First Look at Guillermo del Toro’s “Pinocchio”

The first teaser trailer to Guillermo del Toro’s animated feature film, Pinocchio, has dropped. The film is scheduled for release during the holiday season, 2022.

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How a Solar Gravitational Lens Could Closely Examine Exoplanets for Signs of Life

Here’s an amazing concept. A natural telescope, made from the Sun’s gravitational field, that could be used to peer closely at exoplanet in search for signs of extraterrestrial life. And we’re talking close observation, to the tune of tens of miles across.

The concept is called Solar Gravitational Lens (SGL) and what seemed like sheer science fiction when scientists began talking about it is now looking ever more feasible.

Researchers led by Henry Helvajian, senior scientist in the Physical Sciences Laboratories at the nonprofit research center The Aerospace Corporation, have now shared the initial results of this ongoing NIAC study on the preprint server arxiv, which have not been peer-reviewed. Though the team cautioned that the mission would need to overcome several technical challenges, it could ultimately answer one of humanity’s most fundamental questions: Are we alone in the universe?

“The SGL offers capabilities that are unmatched by any planned or conceivable optical instrument,” according to the study, which was co-authored by Slava Turyshev, a scientist at NASA’s Jet Propulsion Laboratory and principal investigator of the NIAC mission concept. “With its unique optical properties, the SGL can be used to obtain detailed, high resolution images of Earth-like exoplanets as far as 100 light years from Earth, with measurement durations lasting months, or at most a few years.”

Read the rest on Vice.

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A new Harvard study cements Trump's culpability in the Jan. 6 insurrection

A new report tying Trump to Jan. 6 is equally unsurprising and necessary.

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Why it matters that the ‘CHIPS and Science Act’ passed the Senate

Mitch McConnell recently threatened to derail a bill on domestic production of computer chips and scientific research. Today, it passed anyway.

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вторник, 26 июля 2022 г.

IoT Food Scale with Azure and CircuitPython #azureformakers @Azure

Check out the guide here!

New guide! IoT Food Scale with Azure and CircuitPython.

There are many IoT platforms out there, including Adafruit’s own Adafruit.IO, but if you want to build really big projects or run a business using IoT, you’ll need to use a platform that provides support for projects that scale. Microsoft Azure has resources for these types of applications and the best news is that you can use it with CircuitPython.

You can build a food scale using CircuitPython, a NAU7802 STEMMA board and a strain gauge and in this guide, you’ll take that project and connect it to Microsoft Azure to log the weight measurements over time. Additionally, you’ll setup a text alert when it looks like you need to refill the food container.

Tracking inventory usage over time is a great way to utilize IoT tools. It can help you see patterns and better plan for the future.

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Senators want answers from MLB commissioner as worker rights fight continues

MLB Commissioner Rob Manfred is in some hot water with the U.S. Senate. A group of senators want answers about the league's antitrust exemption as minor league players demand better living wages.

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Extremism in the military is a serious national security threat. The GOP needs to act like it

Germany is taking its problem with extremists in the military seriously.

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Pick ‘n place machine demonstrating how it got its name @adafruit #ManufacturingMonday (video)

It’s Manufacturing Monday at Adafruit!

Pick ‘n place machine demonstrating how it got its name

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Pick ‘n place machine demonstrating how it got its name @adafruit #ManufacturingMonday (video)

It’s Manufacturing Monday at Adafruit!

Pick ‘n place machine demonstrating how it got its name

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Trump's Jan. 6 decisions were a choice. And now we have the footage to prove it.

New witness testimony and striking raw footage from the Capitol riot underscores a stunning dereliction of duty.

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понедельник, 25 июля 2022 г.

Featherbase, a Database of Feathers

…but maybe not the feathers you’d expect! 🤪 Sure, our feathers and wings may help you fly, but this particular database is for the birds, a collection for plumology! Featherbase consists of the personal collections from scientists and collectors worldwide, via flowingdata and bookofjoe:

In contrast to the conventional work of museums, Featherbase is much more oriented towards the general public, allowing not just enrolled scientists the opportunity to gain access to the collection, but anyone with an interest in studying birds and their feathers. Featherbase also frequently collaborates with scientific or educational organizations by offering images, data or teamwork in general.

Check out Featherbase and following along on Instagram

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Viktor Orbán condemns 'mixed race' nations ahead of CPAC appearance

Hungarian Prime Minister Viktor Orbán railed against "mixed race" nations days before he's set to address the Conservative Action Political Conference, or CPAC, in Texas.

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The U.S. is getting stretched too thin to fight China's rise

China's goal is to be first in its region — and first in the entire world.

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Intel and MediaTek to partner, use Intel’s foundries #makerbusiness

Intel Foundry Services | Synopsys Partnership

Intel isn’t just fabbing for themselves. Announced today, they will be partnering with MediaTek utilizing Intel Foundry Services, which expands on an Intel initiative started in 2021.

MediaTek plans to use Intel process technologies to manufacture multiple chips for a range of smart edge devices. IFS offers a broad manufacturing platform with technologies optimized for high performance, low power and always-on connectivity built on a roadmap that spans production-proven three-dimensional FinFET transistors to next-generation breakthroughs.

As TSMC continues to hold the majority of semiconductor production, Intel is looking to compete. The more partners they can fab for, the more the can invest in foundries. Intel is trying to take advantage of U.S. initiatives for domestic fab production and this type of business will help.

Some for info about IFS is below, but read the whole announcement on Business Wire.

IFS was established in 2021 to help meet the surging global demand for advanced semiconductor manufacturing capacity. IFS is differentiated from other foundry offerings with a combination of leading-edge process and packaging technology, a world-class IP portfolio, and committed capacity in the United States and Europe. IFS customers will reap the benefits of Intel’s recently announced factory expansions at existing sites, as well as plans for major new investments in greenfield sites in Ohio and Germany.

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Intel and MediaTek to partner, use Intel’s foundries #makerbusiness

Intel Foundry Services | Synopsys Partnership

Intel isn’t just fabbing for themselves. Announced today, they will be partnering with MediaTek utilizing Intel Foundry Services, which expands on an Intel initiative started in 2021.

MediaTek plans to use Intel process technologies to manufacture multiple chips for a range of smart edge devices. IFS offers a broad manufacturing platform with technologies optimized for high performance, low power and always-on connectivity built on a roadmap that spans production-proven three-dimensional FinFET transistors to next-generation breakthroughs.

Some for info about IFS is below, but read the whole announcement on Business Wire.

IFS was established in 2021 to help meet the surging global demand for advanced semiconductor manufacturing capacity. IFS is differentiated from other foundry offerings with a combination of leading-edge process and packaging technology, a world-class IP portfolio, and committed capacity in the United States and Europe. IFS customers will reap the benefits of Intel’s recently announced factory expansions at existing sites, as well as plans for major new investments in greenfield sites in Ohio and Germany.

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Alex Jones' defamation trial kicks off in Texas. Here's what to know.

Conspiracy theorist and right-wing grifter Alex Jones' defamation trial, stemming from lies he told about mass shooting victims, began Monday with jury

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воскресенье, 24 июля 2022 г.

Texas moms form new group to vote Governor Greg Abbott out of office

A new group of Texas mom is on the air with new ads attacking the leadership of Texas Governor Greg Abbott. Nancy Thompson, Founder of Mothers Against Greg Abbott joined American Voices with Alicia Menendez to discuss the coalition to oust the Republican leader.

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Expanding the Usefulness of Your 1-2-3 Blocks with a Hardware Kit

I’ve long been a huge fan of 1-2-3 blocks and always have them around when doing a host of different projects. These blocks were originally made for use in machining, but have now spread into the worlds of woodworking, prototyping, modeling, and all sorts of other maker disciplines.

As the name implies, a 1-2-3 block is a precision-machined, hardened steel block in a 1-2-3 ratio. An Imperial block is a realiable 1″ x 2″ x 3″. There are also metric blocks in the 1-2-3 configuration, and blocks in other sizes, such as 2-4-6.

These blocks are ever-so-handy for quick measuring, aligning, holding parts for gluing/fastening, as shop weights, and countless other applications.

One of the features that few people outside of machining use are the holes drilled into the blocks. These are not just there to keep the overall weight down. They are threaded and non-threaded holes designed for attaching the blocks in various configurations (such as for making right-angle or T- jigs).

In this Stumpy Nubs video, James introduces a clever little hardware kit for easily attaching blocks — and attaching them with nothing proud of the blocks. As he points out, you can source these screws and through-hole fasteners yourself, but why not support the guy who came up with the idea for this kit?

That guy, Mike Taylor, sells a kit of 6 hex-head screws, sized for 1″, 2″, and 3″ attachment, 4 threaded through-hole dowels, a hex key, and a slotted driver head — all housed in a handy little plastic case.

I’m sold. I just bought a kit (only $10). Mike makes really high-quality blocks at a very affordable prize ($20/pair), too, so while I was at it, I snagged another pair of those. It always feels good to support a maker small business.

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Expanding the Usefulness of Your 1-2-3 Blocks with a Hardware Kit

These blocks are ever-so-handy for quick measuring, aligning, holding parts for gluing/fastening, as shop weights, and countless other applications.

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'We’ve got a problem at the highest level’: Secret Service faces scrutiny over deleted text messages

Frank Figliuzzi, National Security Analyst and Former Assistant Director for the FBI, joins Yasmin Vossoughian to discuss the backlash facing the Secret Service over deleted text messages on January 6, as well as the significance of the criminal investigation into the erased messages.

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Dr. Fauci on the rapid spread of the Monkeypox virus

Dr. Anthony Fauci joins MSNBC's Jonathan Capehart to discuss the global impact of the Monkeypox virus following the World Health Organization's decision to designate it as a public health emergency of international concern.

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Lost beneath the leaves: Lasers reveal an ancient Amazonian civilisation

Archeologist are starting to understand more about the early people of the Amazon. New Lidar scans are revealing dense urban centers and complex structures.

Reported in the paper in Nature: Lidar reveals pre-Hispanic low-density urbanism in the Bolivian Amazon from Nature Video:

Pyramids and canals built by an ancient civilisation have been discovered beneath the forests of the Bolivian Amazon. LiDAR technology allowed archaeologists to see through the canopy to reveal hundreds of previously unknown structures and settlements from the Casarabe culture of 500-1400 AD. In this film archaeologist Heiko Prümers describes his work in a region long thought to be unable to support complex ancient societies.

See more!

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суббота, 23 июля 2022 г.

The Pop Surrealism of Eric Joyner

Folks have their favorite robots, of course. Some lean toward R2-D2, some really dig the T-1000, some like cuddly little WALL-E, and some grey-haired obscurantists will talk your ear off about V.I.N.CENT. from The Black Hole. But a everyone, we hope, has a soft spot in their heart for Robby the Robot from Forbidden Planet, the classic CinemaScope science fiction riff on Shakespeare’s The Tempest. But only the pop surrealism master Eric Joyner would think of painting Robby playing the blues on an electric guitar. Here’s more from Sci-Fi-O-Rama:

First I get a kernel of an idea, then think about it, expand upon it… consider all the possibilities. I may do some sketches, depending on how lost I am. Then I do research on the subject I want to paint. Next, I may photograph some of my toy robots. Then on the computer I will combine the sketches, research and photos into a composition. Then after transferring the image to the canvas, I spray it with fixative. Next is a thin wash of oil paint (1/2 thinner, 1/2 Galkyd); a brown or grey color. After that drys I work from dark to light, background to foreground, thin to thick and fuzzy to sharp. I mix regular oil paints with alkyds, so the paint drys faster. After a couple weeks I can varnish it, usually spray varnish.

See more!

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A Video Masterclass in Building Prototypes

Recently, I got an email from one of the readers of my weekly tips newsletter. He was looking for a series of videos about prototyping for engineers that he thought I’d written about at some point. I hadn’t, but I told him I would post his message in the newsletter to see if it rang any bells with others.

Within minutes after sending this week’s newsletter, I got this email from a reader named Talon Chandler:

I suspect he might be referring to Dan Gelbart’s series of videos. Dan is a local legend among engineers in Vancouver, BC. He founded Creo, a printing technology company that sold to Kodak circa 2005, and several other companies including Kardium, a growing healthcare company. I’ve had the pleasure of meeting Dan once (I interned at Kardium close to 10 years ago), although I haven’t had the pleasure of visiting his extraordinary shop.

The videos he points to are quite the find, an 18-part series on machining prototypes. Dan’s other videos are worth your time, too.

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Sesame Place under fire after performer appears to snub two Black girls at theme park

The family of two young Black girls release a new video that they say shows the performer 'Rosita' dismissing the girls before greeting other kids right next to them at Sesame Place theme park.

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8 Useful Op-Amp Circuits

On this Element14 video, they look at eight basic and useful op-amp circuits you can use as springboards for your own projects.

The amp circuits covered are non-inverting amplifier, inverting amplifier, comparator, peak detector, summing amp, differential amp, a clipper and a clamper circuit.

Here is a previous video they did explaining op-amps work:

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A Video Masterclass in Building Prototypes

Within minutes after sending this week’s newsletter, I got this email from a reader named Talon Chandler:

I suspect he might be referring to Dan Gelbart’s series of videos. Dan is a local legend among engineers in Vancouver, BC. He founded Creo, a printing technology company that sold to Kodak circa 2005, and several other companies including Kardium, a growing healthcare company. I’ve had the pleasure of meeting Dan once (I interned at Kardium close to 10 years ago), although I haven’t had the pleasure of visiting his extraordinary shop.

The videos he points to are quite the find, an 18-part series on machining prototypes. Dan’s other videos are worth your time, too.

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Exploring Solar Panel Efficiency Breakthroughs in 2022

In May NREL set a new benchmark for solar panel efficiency. Solar power is one of the most readily available renewable resources out there, if you can harness it. These new cells aren’t just impressive for their efficiency but how little light intensity was required.

Details of the development are outlined in the paper “Triple-junction solar cells with 39.5% terrestrial and 34.2% space efficiency enabled by thick quantum well superlattices,” which appears in the May issue of the journal Joule.

The results come from Inverted Metamorphic Multi-junciton cells. Great recap of current solar panel tech from Undecided with Matt Ferrell:

Scientists have just had a major solar panels efficiency breakthrough, and it could mean a big change for the future of renewable energy.

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пятница, 22 июля 2022 г.

John Park’s CircuitPython Parsec: tio serial i/o tool @johnedgarpark #adafruit #circuitpython

Check out ‘tio’ the Serial IO tool for any operating system that makes it painless to debug your microcontroller, even when resetting or power cycling your board. https://ift.tt/GZD1rip
Learn more about CircuitPython

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New Products 7/20/2022 Featuring Adafruit PCF8574 I2C GPIO Expander Breakout – STEMMA QT / Qwiic! (Video)

New Products 7/20/2022 Featuring Adafruit PCF8574 I2C GPIO Expander Breakout – STEMMA QT / Qwiic! (Video)

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Democrats participating in civil disobedience is a good thing

Democratic lawmakers getting arrested for abortion rights could help inspire the base.

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Smoothing 3D Prints with a Hobby Sanding/Polishing Tool

I have long been a huge fan of the Mr. Hobby Polisher Pro sanding tool. This is a simple (and a bit overpriced) battery-operated disc polisher/sander sold to the hobby market for sanding off sprue material and finishing models. It’s basically an electric toothbrush with a disc head.

The Polisher Pro comes with 3 sheets of sanding pads in 600, 800, and 1000-grit. There are 45 pads in all. I’ve had my tool for several years now, use it often in modeling, and still have plenty of pads left. There are also replacement sanding pads available on Amazon (and there are pads available in other grits).

This video introduces a use I hadn’t thought of: for sanding layer lines and joins in resin and FDM 3D prints. The video doesn’t have a lot of content beyond that basic idea, but I was happy to discover another use for a tool I already own.

I know many will think: Just use a Dremel tool. You can if you have a mini Dremel, but for modeling, this tool is better sized and not as aggressive as a Dremel. And, don’t be like this guy. Always wear a mask when sanding resin and plastic.

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Give a plant a personality using the Raspberry Pi Pico W #piday #raspberrypi @Raspberry_Pi