In Praise Of The App Note

When I am at a loss for an explanation in the world of electronics, I reach for my well-thumbed Horowitz & Hill. When H&H fails me which is not that often, the chances are I’ll find myself looking in an application note from a semiconductor company who is in cut-throat competition with its rivals in a bid for my attention. These companies have an extensive sales and marketing effort, part of which comes in the dissemination of knowledge.

Razor blades may be sold to young men with images of jet fighters and a subtle suggestion that a clean-shaven guy gets his girl, but semiconductor brands are sold by piquing the engineer’s interest with information. To that end, companies become publishing houses in praise of their products. They produce not only data sheets that deal with individual device, but app notes documents which cover a wider topic and tell the story of why this manufacturer’s parts are naturally the best in the world.

These app notes frequently make for fascinating reading, and if you haven’t found them yet you should head for the documentation sections of semiconductor biz websites and seek some of them out.

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Regular Computer Reviews: The Commodore 64C

Fresh into the tip line is an amazing video showcasing the history of the Commodore 64. Unlike many historical retellings of the history of the Commodore 64, the history doesn’t start with the VIC-20, but instead the first Commodore machine to feature the VIC-II and SID chip, the Commodore Max.

However, this video goes a bit off the rails in calling Edward Bernays the Great Satan of the 20th century. Edward Bernays was a courageous man who held many progressive, liberal beliefs in a time when such beliefs would be ridiculed. Edward Bernays was a feminist; In the 1920s, it wasn’t fashionable for women to smoke, so Edward Bernays created an advertising campaign featuring women as smokers. Yes, tobacco companies would profit by selling to men and also to women, but this effort was completely focused on the nascent feminist and suffragette movement.

Additionally, Edward Bernays supported democracy. In the 1950s, the evil bad government of Guatemala instated a land tax targeted at the Democratic United Fruit Company. Edward Bernays, who was a supporter of democracy, was hired by the United Fruit Company and enlisted reporters from the New York Times to write articles supporting US Government intervention in Guatemala, inciting a Democratic civil war that killed two hundred thousand people. Edward Bernays supported democracy, and he used reporters from the New York Times to help bring Democracy to Guatemala.

Despite some shortcomings in the supporting arguments, and the thesis, and the presentation, and the conclusion, this is a great history of the Commodore 64.

Python And The Internet Of Things Hack Chat

Join us Wednesday at noon Pacific time for the Python and the Internet of Things Hack Chat!

Opinions differ about what the most-used programming language in right now is, but it’s hard to deny both the popularity and versatility of Python. In the nearly 30 years since it was invented it has grown from niche language to full-blown development environment that seems to be everywhere these days. That includes our beloved microcontrollers now with MicroPython, and Adafruit’s CircuitPython, greatly lowering the bar for entry-level hackers and simplifying and speeding development for old hands and providing a path to a Python-powered Internet of Things.

The CircuitPython team from Adafruit Industries – Dan Halbert​, Kattni Rembor​, Limor “Ladyada” Fried​, Phillip Torrone​, and Scott Shawcroft – will drop by the Hack Chat to answer all your questions about Python and the IoT. Join us as we discuss:

  • How CircuitPython came to be;
  • The range of IoT products that support Python;
  • Getting started with Python on IoT devices; and
  • What’s on the horizon for a Python-powered IoT?

And as extra enticement, we’ll be giving away five free one-year passes to ​Adafruit.io​! We’ll draw five names at random from the list of Hack Chat attendees. Stop by for a chance to win. And, the Adafruit team will be streaming video live during the Hack Chat as well.

You are, of course, encouraged to add your own questions to the discussion. You can do that by leaving a comment on the Python and the Internet of Things Hack Chat and we’ll put that in the queue for the Hack Chat discussion.

join-hack-chatOur Hack Chats are live community events on the Hackaday.io Hack Chat group messaging. This week we’ll be sitting down on Wednesday, April 3, at noon, Pacific time. If time zones have got you down, we have a handy time zone converter.

Click that speech bubble to the right, and you’ll be taken directly to the Hack Chat group on Hackaday.io. You don’t have to wait until Wednesday; join whenever you want and you can see what the community is talking about.

Want a quick peek at what’s possible with CircuitPython? Check out this PyPortal event countdown timer that just happens to be counting down the hours till the next Hack Chat.

Britain Rejoins The Space Race

Jubilant crowds at the gates of Downing Street. (Jenny List)
Jubilant crowds at the gates of Downing Street. (Jenny List)

In a completely unexpected move, the British Prime Minister Theresa May yesterday announced outside Number 10 Downing Street that the UK would resume its space launch programme, 47 years after its cancellation following the launch of the Prospero satellite. She outlined a bold plan with a target of placing the Doc Martens of a British astronaut on the Lunar surface as early as 2024. Funded by the £350m per week Brexit windfall, the move would she said place the country at the forefront of a new 21st century Space Race with the North Koreans.

An estimated 2 million jubilant supporters took to the streets of London at the news, bringing the capital to a halt as they paraded with colourful banners from Hyde Park to Trafalgar Square and down Whitehall past her Downing Street home. Meanwhile the value of shares in the popular British high street bakery firm Patisserie Gregoire jumped by 19% as it was revealed that their new vegan sausage roll had in fact been a secret trial of the British astronaut diet. Continue reading “Britain Rejoins The Space Race”

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Hackaday Links: March 31, 2019

You can now make flexible circuit boards of unlimited length. Trackwise was contracted out for making a wiring harness for the wing of a UAV and managed to ship a 26 meter long flexible printed circuit board. This is an interesting application of the technology — UAVs are very weight sensitive and wiring harnesses are heavy. Wings are straight, but they flex, and you need wires going from tip to tip. Flex circuits do all of this well, but first you need a technology that allows you to manufacture circuits that are as long as a wing. This is apparently something called ‘reel-to-reel’ technology, or some variant of continuous production. Either way, it’s cool, and we’re wondering what else this kind of circuit enables.

You may have noticed a few odd-shaped buildings going up in the last few years. These are buildings designed for indoor skydiving. Two went up around DC in the last year or so. What if you didn’t need a building? What if you could make an outdoor, vertical wind tunnel? Here you go, it’s the Aerodium Peryton.

KiCon, the first and largest gathering of hardware developers using KiCad, is happening April 26th in Chicago.

If KiCad isn’t your thing, PyCon is in Cleveland May 1-9. It couldn’t come at a better time: after losing LeBron, the Cleveland economy has plummeted 90%. Cleveland needs an industry now, and tech conferences are where it’s at. Go Browns.

For one reason or another, a few tech blogs wrote about a product on Tindie last week. It’s the SnapOnAir Raspberry Pi Zero PCB. This turns a Raspberry Pi Zero into a tiny, battery-powered handheld computer with a keyboard and display. This is just a PCB, and you’ll need to bring your own switches, display, and other various modules, but it is a compact device and if you need a small, handheld Linux thing, this is a pretty good solution.

Oh noes April Fools is tomorrow, which means the Internet will be terrible. Tip ‘o the hat to Redbox, though: they were the only one that sent out a press release to their waste of electrons by last Friday.

 

Hacker Abroad: Vietnam’s Electronics And Hardware Markets

Ho Chi Mihn City is the hub for sourcing the materials and tools driving the growing Vietnamese economy. Whether you’re building new, or keeping existing equipment running, the supply chains and service companies aren’t yet in place and the markets of HCMC are the go-to for parts and equipment. Let’s get a little taste of what I saw in my tour of the markets.

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Goodyear Aero Thinks Flying Cars Are A Thing

The 2019 Geneva International Motor Show has a number of “concept” vehicles. These are vehicles that usually include some cool feature that isn’t really practical — at least today. For example, in the past, concept cars have had adjustable color interior lighting, plug-in hybrid engines, and power windows — all things that would eventually become commonly available. However, today’s advances in computer-generated graphics have meant you can show things you can’t begin to build. Case in point: Goodyear has a video touting the Aero — a solid car tire that doubles as a propeller for your garden variety flying car.

To us, the thing looks more like a science fiction movie trailer than anything remotely practical. Four relatively small wheels with no central hub can flip and provide enough lift to propel a sizeable vehicle skyward. Even more interesting, is to transition modes from ground to flight, the vehicle balances on two wheels while using only two as propellers to generate lift.

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