Accessibility devices tend to be prohibitively expensive, and it’s always nice to see a hacker apply their skills to making these devices more affordable. BRAIGO is a low cost braille printer by [Shubham Banerjee]. He built the printer using parts from the LEGO Mindstorms EV3 kit, with a few additions. This LEGO kit retails for $349, and a standard braille printer costs over $2000.
The BRAIGO print head uses weights and a pin to punch holes in standard calculator paper rolls. LEGO motors are used to feed the paper and align the head for accurate printing. It takes about 5 to 7 seconds to print each letter, which are entered on the Mindstorms controller.
While this is a great prototype, [Shubham] intends to continue development with the goal of creating an affordable braille printer. He’s a bit swamped with media requests right now, but is working on releasing BRAIGO as an open source project so others can contribute. It’s an impressive project, especially for a 12 year old student. After the break, watch the BRAIGO do some printing.
Continue reading “BRAIGO – A Lego Braille Printer”
While 3D printing gives you the ability to fabricate completely custom parts, it does have some drawbacks. One issue is the time and cost of printing large volumes. Often these structures are simple, and do not require completely custom design.
This is where the faBrickation system comes in. It allows you to combine 3D printed parts with off the shelf LEGO bricks. The CAD tool that lets you ‘Legofy’ a design. It creates directions on how to assemble the LEGO parts, and exports STL files for the parts to be 3D printed. These custom bricks snap into the LEGO structure.
In their demo, a head mounted display is built in 67 minutes. The same design would have taken over 14 hours to 3D print. As the design is changed, LEGO blocks are added and removed seamlessly.
Unfortunately, the tool doesn’t appear to be open source. It will appear for the ACM CHI Conference on Human Factors in Computing Systems, so hopefully we will see more in the future. Until then, you can watch the demo after the break.
Continue reading “faBrickation: Combining Lego and 3D Printing”
[Kyle] teaches photography and after being dismayed at the shuttering of film and darkroom programs at schools the world over decided to create a resource for film photography. There’s a lot of cool stuff on here like mixing up a batch of Rodinal developer with Tylenol, lye, and sodium sulphite, and assessing flea market film cameras. There are more tutorials coming that will include setting up a dark room, developing prints, and playing around with large format cameras.
[hifatpeople] built a binary calculator out of LEGO® bricks or toys. It started off as a series of logic gates built out of LEGO® bricks or toys in the LEGO® Digital Designer. These logic gates were combined into half adders, the half adders combined into full adders, and the full adders combined into a huge plastic calculator. Unfortunately, buying the LEGO® bricks or toys necessary to turn this digital design into a physical model would cost about $1000 using the LEGO® Pick-A-Brick service. Does anyone have a ton of LEGO® Technic® bricks or toys sitting around? We’d love to see this built.
Think you need a PID controller and fancy electronics to do reflow soldering in a toaster oven? Not so, it seems. [Sivan] is just using a meter with a thermocouple, a kitchen timer, and a little bit of patience to reflow solder very easily.
The folks at DreamSourceLabs realized a lot of electronic test equipment – from oscilloscopes and logic analyzers to protocol and RF analyzers were all included a sampling circuit. They designed the DSLogic that puts a sampler and USB plug on one board, with a whole bunch of different tools connected to a pin header. It’s a pretty cool idea for a modular approach to test equipment.
Adafruit just released an iDevice game. It’s a resistor color code game and much more educational than Candy Crush. With a $0.99 coupon for the Adafruit store, it’s effectively free if you’re buying anything at Adafruit anytime soon. Check out the video and the awesome adorable component “muppets”.
There are a number of elaborate Lego creations out there, but you probably haven’t seen something quite like [Andrew Carol’s] Lego drawing machine. He drew inspiration from the film Hugo and from automata of the 1800’s, specifically [Jaquet-Droz]’s Draughtsman, which we featured in a Retrotechtacular article not too long ago.
[Andrew’s] hand-cranked creation is divided into three components: a plotter, an “encoded pen stroke program”—which stores messages in links of pieces—and a reader that translates the links into pen strokes. The plotter moves the pen in the Y axis and moves the paper in the X to mark on the page, and also has a simple lift mechanism that temporarily raises the pen on the Z axis to interrupt pen strokes between letters (or drawings).
[Andrew] describes the chain reader by comparing it to a film projector, feeding the message through the mechanism. Although you won’t find a detailed how-to guide explaining the devices’ inner-workings on his site, there are some clues describing basic components and a couple of videos, both of which are embedded below.
Continue reading “Drawing with Legos”
Master LEGO craftsman [Baron von Brunk] had the same childhood passions as a lot of us—LEGO (obviously), Transformers, and Nintendo. But he also harbored a passion for traffic lights and road signs. His latest offering, a fully functional LEGO traffic light, is some pretty fantastic plastic. You might recall that we featured [Baron von Brunk]’s LEGO mosaic lamps a few weeks ago. This project is that one on steroids.
The body is made of 1700+ LEGO and Technic pieces. [Baron von Brunk] was kind enough to provide his LDD file, though he says it should be considered a rough guide to construction. The red, yellow, and green 1×1 areas are each lit with a 48-SMD LED floodlight bulb. Colored lights are available, but he used the solid white variety for greater luminescence. The lights are driven by a traffic light controller typically used for model railroads.
[Baron von Brunk] ended up lining the inside with black 1x1s and metallic reflective duct tape to keep the light from leaking out of the masonry. He used some Technic bricks on the rear door to form hinges, and Technic pins to hold the LED lamps.
[Steve Sammartino] is a Melbourne entrepreneur, and he had an idea: could it be possible to design and make a functional full-size Lego car?
He sent out a single tweet to try to crowd fund the project:
Anyone interested in investing $500-$1000 in a project which is awesome & a world first tweet me. Need about 20 participants… #startup
Not one, not two, but forty Australians pledged money to start this crazy idea dubbed the #SuperAwesomeMicroProject. With the money raised, [Steve] and [Raul Oaida] purchased over 500,000 Lego pieces and began the build in Romania, where [Raul] lives.
Now before you get too excited, the car is not “fully” made out of Lego. It features real tires and some select load bearing elements. That being said, the entire engine is made completely out of Lego. It features four orbital engines utilizing a total of 256 pistons. The top speed they tested it to was about 20-30km/h — it might go faster, but they didn’t want to risk a catastrophic failure.
Since its completion (it took nearly 18 months to build), it’s been shipped back to a secret location in Melbourne, but the team has made an excellent video showcasing the project. Stick around after the break to see your childhood dreams come to life.
Continue reading “Full-size Lego Car Can Hit 30km/h!”
Looking for a throw back to your childhood, or maybe you just appreciate things that light up and look amazing? Well, [Baron] has a really impressive project for you. Not only does it look stunning and incorporate all of the things we love, it’s actually a pretty novel design. These lamps are built completely out of LEGO Technic pieces, the brand of LEGO that have holes drilled through them so you can build more advanced creations.
[Baron] used these parts with the drilled holes to create a dot matrix in which he placed colored transparent LEGO dots in the holes. The method of creating patterns is very similar to the way it’s done on the “Lite-Brite”. We especially love the theme of these lamps and they would match well with your LEGO mystery box. What’s really great about this tutorial is that it lays down the foundation for LEGO-built lamps that could be more interactive, involve more control (like RGB LEDs), or even introduce some LEGO mechanics!