Hair Thin Wires Save A 3DS From The Landfill

May 13, 2014 by Rick Osgood 28 Comments

Broken Nintendo 3DS

[Anton] recently acquired a broken Nintendo 3DS. When the power button was pressed, the device would start booting up only to shut back down after flashing a blue light and making a popping sound. It turns out this problem is pretty common with the 3DS.

[Anton] could have tossed this device into the landfill, but where’s the fun in that? Instead, he cracked the device open like any self-respecting hacker would. It didn’t take him long to discover two broken flex ribbon cables. [Anton] could have then searched for replacement cables, but his inner hacker told him he could repair this himself. He carefully scraped the insulation off of the broken traces and then soldered on some hair thin wires to bridge the gap.

All that was left to do was to glue the wires securely in place and feed them back through the hinges. This project is a great example of how a little determination and know-how can keep a useful device from the landfill. If you attempt this repair yourself, you may find this 3DS teardown to be a helpful reference. What devices have you been able to save from an untimely demise?

Developed On Hackaday: License Incompatibilities And Project State

May 13, 2014 by Mathieu Stephan 94 Comments

It has been a while since we wrote an article about our ongoing offline password keeper project, aka the Mooltipass. Our last post was asking our dear readers to vote for their favorite card art, so what have we been doing since then?

For the last few weeks we’ve mostly been improving our current PCBs and case design for the production process to go smoothly. The final top PCB shown above has been tweaked to improve his capacitive touch sensing capabilities, you may even see a video of the system in action in the Mooltipass project log on hackaday.io. We’ve also spent some time refining the two most popular card art designs so our manufacturers may print them correctly. We’ll soon integrate our updated USB code (allowing the Mooltipass to be detected as a composite HID keyboard / HID generic) into the main solution which will then allow us to work on the browser plugin.

It’s also interesting to note that we recently decided to stop using the GPL-licensed avrcryptolib. Our current project is CDDL licensed, allowing interested parties to use our code in their own project without forcing them to publish all the remaining code they created. The GPL license enforces the opposite, we therefore picked another AES encryption/decryption implementation. This migration was performed and checked by our dedicated contributor [Miguel] who therefore ran the AES NESSIE / CTR tests and checked their output, in less than a day.

We’re about to ship the first Mooltipass prototypes to our active contributors and advisers. A few weeks later we’ll send an official call for beta testers, just after we shown (here on Hackaday) what the final product looks like. Don’t hesitate to ask any question you may have in the comments section, you can also contact us on the dedicated Mooltipass Google group.

Retrotechtacular: Forging Of Chain By Smiths

May 13, 2014 by Brian Benchoff 36 Comments

Ah, the days when men were men and people died of asbestos related illnesses in their 30s. Let this video take you back to the ancient times when chains were forged by hand, destructively tested using wooden capstans, and sent off to furnish the ships of the line, way back in the year 1940.

The video is something of an advertisement for the Netherton iron works, located in the English midlands. Founded sometime in the mid 19th century, it appears the tooling and machinery didn’t change much the hundred years before this was filmed.

The chain begins as a gigantic mass of wrought iron bars brought in from a forge. These bars are stockpiled, then sent through chain shears that cut them into manageable lengths a foot or so long. The next scene would probably look the same in 1940 as 1840, with gangs of men taking one of the bars, heating it in a forge, beating it on an anvil, and threading it through the last link in the chain they worked on. This isn’t the satisfying machinations of industrial automata you’d see on How It’s Made. No, this is hard manual labor.

Whether through simple quality control or an edict from the crown, the completed chains are tested, or more specifically, proofed. Yard long samples are tested to their failure point, and entire chains are proofed to their carrying capacity in 15 fathom ( 90 feet) long lengths. These chains are then examined link by link, stamped and certified, and sent off to mines, factories, tramp steamers, and battleships.

Although the Netherton iron works no longer exists, it did boast a few claims to fame in its day. It manufactured the anchors and chain for both the Titanic and Lusitania. Of course, such a large-scale production of wrought chain in such an archaic method would be impossible today; today, every wrought iron foundry has been shuttered for decades. If you’ve ever wondered how such massive things were made with a minimal amount of machinery, though, there you go.

Continue reading “Retrotechtacular: Forging Of Chain By Smiths” →

Get Your Uni, School Or College Involved In The Hackaday Prize

May 13, 2014 by Jasmine Brackett 3 Comments

We’ve been busy contacting design tech and electrical engineering education departments to tell them about The Hackaday Prize, but there are only so many of us and we could do with your help to get the word out.

Are you excited about The Hackaday Prize? Do you think more people at your school should know about it so they can take part? Either way, please help us help them by emailing prize@hackaday.com to let us know what program coordinators, student group, or other people we should contact. If appropriate, we have a bunch of promotional materials we would like to send out to some of these awesome hackers.

You can also help us by telling your hacker designer friends, posting about The Hackaday Prize on college social media (#HackadayPrize), or letting the student newspaper know. We want to get as many universities, colleges and high schools involved as possible. Many senior year project ideas would make great starting points for THP entries, and we want to make sure students take up this opportunity to show off what they can do (and hopefully win some stuff in the process). This makes a great summer project, and looks great when applying for colleges or jobs in the future.

Remember you have until August to get your entry in, but the sooner you post it on Hackaday Projects, the sooner you can potentially start winning rewards. We have hundreds of tshirts, stickers, patches, posters and other swag up for grabs on the way to winning The Hackaday Prize.

Making Manual Lens Flares With A Few Simple Parts

May 13, 2014 by James Hobson 16 Comments

DIY Lens Flare

If you’re an aspiring film maker hoping to be the next [J.J. Abram] with a mild (severe?) obsession with lens flares, then this Instructable is for you!

Modern camera lenses are designed to prevent lens flare, but sometimes, just sometimes, you want a cool lighting flare in your video. Of course you could add them in post production, but that’s kind of cheating, and if you don’t have expensive video editing software, not very easy to do either.

Now you could just throw a super bright LED flashlight on set and hope for the best, but you’ll never get that cool Star Wars or Star Trek blinding purple line… unless you add something on your camera to help scatter the light! [Jana Marie] has figured out just how to do that. Continue reading “Making Manual Lens Flares With A Few Simple Parts” →

An Open Source Cortex-M0 Halogen Reflow Oven Controller With LCD

May 13, 2014 by Mathieu Stephan 15 Comments

Homemade reflow ovens are a great inexpensive way to quickly solder multiple prototypes at once. [Andy] may just have built one of the best ones we’ve featured so far on Hackaday. For his project a £25 1300W 12litre halogen oven was chosen because of its low cost and fast heating time, the latter being required to follow typical reflow profile ramp-up stages.

To control the AC power [Andy] first bought a chinese Fotek Solid State Relay (SSR) on ebay, which was quickly replaced by an american one after reading concerning reports on the internet. He then made the same ‘mistake’ by buying the typical MAX6675 thermocouple-to-digital converter from the same website, as he spent much time understanding why the measurements were wrong when the IC was just defective. His final build is based around a 640×360 TFT LCD that he previously reverse engineered, the cortex-M0 STM32F051C8T7, a SPI flash, some power regulators and buttons. The firmware was written in C++ and we’ll let our readers visit [Andy]’s page to see how well his oven performs.

Solderless Noise-o-Tron Kit Makes Noise At Chicago Makerfaire

May 13, 2014 by Rick Osgood 37 Comments

Noise-o-Tron

Anyone who’s manned a hackerspace booth at an event knows how difficult it can be to describe to people what a hackerspace is. No matter what words you use to describe it, nothing really seems to do it justice. You simply can’t use words to make someone feel that sense of accomplishment and fun that you get when you learn something new and build something that actually works.

[Derek] had this same problem and decided to do something about it. He realized that in order to really share the experience of a hackerspace, he would have to bring a piece of the hackerspace to the people. That meant getting people to build something simple, but fun. [Derek’s] design had to be easy enough for anyone to put together, and inexpensive enough that it can be produced in moderate quantities without breaking the bank.

[Derek] ended up building a simple “optical theremin”. The heart of this simple circuit is an ATTiny45. Arduino libraries have already been ported to this chip, so all [Derek] had to do was write a few simple lines of code and he was up and running. The chip is connected to a photocell so the pitch will vary with the amount of light that reaches the cell. The user can then change the pitch by moving their hand closer or further away, achieving a similar effect to a theremin.

[Derek] designed a simple “pcb” out of acrylic, with laser cut holes for all of the components. If you don’t have access to a laser cutter to cut the acrylic sheets, you could always build your own. The electronic components are placed into the holes and the leads are simply twisted together. This allows even an inexperienced builder to complete the project in just five to ten minutes with no complicated tools. The end result of his hard work was a crowded booth at a lot of happy new makers. All of [Derek’s] plans are available on github, and he hopes his project will find use at Makerfaires and hackerspace events all over the world.