public domain

6 Articles

3D Printed Braille Trainer Reduces Barrier To Entry

May 20, 2024 by 8 Comments

Accessibility devices are a wonder of modern technology, allowing people with various needs to interact more easily with the world. From prosthetics to devices to augment or aid someone’s vision or hearing, devices like these can open up many more opportunities than would otherwise exist. A major problem with a wide array of these tools is that they can cost a fortune. [3D Printy] hoped to bring the cost down for Braille trainers which can often cost around $1000.

Braille trainers consist of a set of characters, each with six pins or buttons that can be depressed to form the various symbols used in the Braille system. [3D Printy]’s version originally included six buttons, each with a set of springs, that would be able to pop up and down. After some work and real-world use, though, he found that his device was too cumbersome to be effective and redesigned the entire mechanism around flexible TPU filament, allowing him to ditch the springs in favor of indentations and buttons that snap into place without a dedicated spring mechanism.

The new design is modular, allowing many units to be connected to form longer trainers than just a single character. He’s also released his design under the Creative Commons public domain license, allowing anyone to make and distribute these tools as they see fit. The design also achieves his goal of dramatically reducing the price of these tools to essentially just the cost of filament, provided you have access to a 3D printer of some sort. If you need to translate some Braille writing and don’t want to take the time to learn this system, take a look at this robotic Braille reader instead.

Thanks to [George] for the tip!

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Mickey Shall Be Free!

December 18, 2023 by 24 Comments

The end of the year brings with it festive cheer, and a look forward into the new year to come. For those with an interest in intellectual property and the public domain it brings another treat, because every January 1st a fresh crop of works enter the public domain.

We’ll take a look at the wider crop around the day, but this year the big story is that Mickey Mouse, whose first outing was in 1928’s Steamboat Willie, is to get his turn to be released from copyright. [Jennifer Jenkins] from Duke University’s Center for the Study of the Public Domain, is using Mickey’s impending release to take a look at the law surrounding such a well-protected work.

Mickey has perhaps the greatest symbolism of all intellectual property when it comes to copyright terms, having been the reason for the Disney Corporation’s successive successful attempts to have copyright terms extended. Now even their reach is about to come to an end, but beware if you’re about to use him in your work, for the Mickey entering the public domain is an early outing, without gloves or the colours and eyes of his later incarnations. Added to that, Disney have a range of trademarks surrounding him. The piece makes for an interesting read as it navigates this maze, and makes some worthwhile points about copyright and the public domain.

Last year, we welcomed Fritz Lang’s Metropolis to the public domain. Meanwhile if you’re reading this in 2023, we believe our use of a header image featuring the 1928 Mickey to be covered by the doctrine of fair use.

What’s New, From 1927

January 2, 2023 by 13 Comments

Here we are at the start of the new year, which for the Internet Archive means a note about what has just entered the public domain. 1927’s finest previously copyrighted materials are now up for grabs in the public domain, which means there’s a treasure trove of films, books, and music to freely copy and remix.

Their article highlights a few notable pieces of 1927’s popular culture , of which we suggest you should definitely take note of Fritz Lang’s Metropolis if you have any interest in sci-fi, but for Hackaday readers there’s not much else in the article itself relating to technology. Delving into the archive for 1927 is still a fascinating pastime though, because beyond the interest of seeing what’s now free it led onto what was the state of technology in the 1920s. And here we find ourselves as much navigating the English language as we do the library itself, because so much of what we do uses vocabulary from the decades since. Continue reading “What’s New, From 1927” →

Why Fedora Decided To Give CC0 Licensed Code The Boot

July 29, 2022 by 57 Comments

The term “open source” can be tricky. For many people, it’s taken to mean that a particular piece of software is free and that they can do whatever they wish with it. But the reality is far more complex, and the actual rights you’re afforded as the user depend entirely on which license the developers chose to release their code under. Open source code can cost money, open source code can place limits on how you use it, and in some cases, open source code can even get you into trouble down the line.

Which is precisely what the Fedora Project is looking to avoid with their recent decision to reject all code licensed under the Creative Common’s “Public Domain Dedication” CC0 license. It will still be allowed for content such as artwork, and there may even be exceptions made for existing packages on a case-by-case basis, but CC0 will soon be stricken from the list of accepted code licenses for all new submissions.

Fedora turning their nose up at a software license wouldn’t normally be newsworthy. In fact, there’s a fairly long list of licenses that the project deems unacceptable for inclusion. The surprising part here is that CC0 was once an accepted license, and is just now being reclassified due to an evolving mindset within the larger free and open source (FOSS) community.

So what’s the problem with CC0 that’s convinced Fedora to distance themselves from it, and does this mean you shouldn’t be using the license for your own projects?

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Retrotechtacular: Farming Implements In 1932

April 28, 2017 by 28 Comments

Few people would deny that farming is hard work. It always has been, and it probably always will be no matter how fancy the equipment gets. In 1932, farming was especially grueling. There was widespread drought throughout the United States, which gave rise to dust bowl conditions. As if those two things weren’t bad enough, the average income of the American farmer fell to its lowest point during the Depression, thanks to the Smoot-Hawley Tariff Act.

Even so, crop farming was still a viable and somewhat popular career path in 1932. After all, knowing how to grow food is always going to get you elected into your local post-apocalyptic council pretty quickly. As such, the John Deere Equipment Company released the 19th edition of their classic book, The Operation, Care, and Repair of Farm Machinery. This book covers all of the various equipment a crop farmer needed to get from plough to bounty. The text gives equal consideration to horse-driven and tractor-driven farming implements, and there’s an entire chapter dedicated to tractor engine maintenance.

According to its preface, this book was used as an agricultural text in schools and work-study programs. It offers a full course in maintaining the all the (John Deere) equipment needed to work the soil, plant crops, cultivate, harvest, and manure in all parts of the country. The Operation, Care, and Repair of Farm Machinery was so well-received that John Deere kept the book in publication for over thirty years. The 28th edition and final edition came out in 1957. We wonder why they would have stopped putting it out after all that time. Maybe it wasn’t profitable enough, or the company decided to phase out the shade tree tractor mechanic.

So why should you delve into a sorely outdated textbook about farm equipment? Well, it’s straightforwardly written and easy to learn from, whether you’re trying or not. You should check it out if you’re even remotely curious about the basics of farming. If for no other reason, you should go for the beautiful hand-drawn illustrations and stay for the interesting tables and charts in the back. Did you know that a gallon of milk weighs 8.6 pounds?

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Chalkbot Vs GraffitiWriter

July 9, 2009 by 30 Comments

For those who watched the Tour de France, you may have been pleasantly surprised to see some cool tech. Nike was using a robot to paint pictures on the street in chalk dot matrix style. It was accepted by the general public as new and innovative, as well as generally cool. In the hacker community though, a bit of trouble began to brew. The Chalkbot bears more than a passing resemblance to a project called GraffitiWriter. GraffitiWriter was a bot initially designed to protest the militarization of robotics. As it turns out, one of the early developers of the GraffitiWriter is behind the Chalkbot in a legitimate contract. The trouble doesn’t seem to be one of intellectual property legalities. People are mad at the corporatization of public work. They want kids watching to know that this system was designed by regular people in their spare time at their homes, not by a team of researches in a secret underground Nike laboratory.

The article takes a bit of a turn and talks some about the possibility of projects being taken and used for corporate advertisement. The specific item they are talking about is the Image Fulgurator which secretly projects images on objects in your photographs. You’ll have to go check that one out to see how it works.