MIT Makes Lego Lab For Microfluidics

As any good hacker (or scientist) knows, sometimes you find the tools you need in unexpected places. For one group of MIT scientists, that place is a box of Lego. Graduate student [Crystal Owens] was looking for new ways to make a cheap, simple microfluidics kit. This technique uses the flow of small amounts of liquid to do things like sort cells, test the purity of liquids and much more. The existing lab tools aren’t cheap, but [Crystal] realized that Lego could do the same thing. By cutting channels into the flat surface of a Lego brick with a precise CNC machine and covering the side of the brick with glass, she was able to create microfluidic tools like mixers, drop makers and others. To create a fluid resistor, she made the channel smaller. To create a larger microfluidic system, she mounted the blocks next to each other so the channels connected. The tiny gap between blocks (about 100 to 500 microns) was dealt with by adding an O-ring to the end of each of channel. Line up several of these bricks, and you have a complete microfluidic system in a few blocks, and a lab that only costs a few dollars.

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Optics Laboratory Made From LEGO

16A lot of engineers, scientists, builders, makers, and hackers got their start as children with LEGO. Putting those bricks together, whether following the instructions or not, really brings out the imagination. It’s not surprising that some people grow up and still use LEGO in their projects, like [Steve] who has used LEGO to build an optics lab with a laser beam splitter.

[Steve] started this project by salvaging parts from a broken computer projector. Some of the parts were scorched beyond repair, but he did find some lenses and mirrors and a mystery glass cube. It turns out that this cube is a dichroic prism which is used for combining images from the different LCD screens in the projector, but with the right LEGO bricks it can also be used for splitting a laser beam.

The cube was set on a LEGO rotating piece to demonstrate how it can split the laser at certain angles. LEGO purists might be upset at the Erector set that was snuck into this project, but this was necessary to hold up the laser pointer. This is a great use of these building blocks though, and [Steve] finally has his optics lab that he’s wanted to build for a while. If that doesn’t scratch your LEGO itch, we’ve also featured this LEGO lab which was built to measure the Planck constant.

Lego Mindstorms Used To Automate Tedious Laboratory Tasks

lego-bone-machines

Modern society owes so much to medical research, though what happens behind the scenes in a laboratory is usually far less than glamorous. A group of scientists at the University of Cambridge are working to develop synthetic bone tissue, but the process to create the samples used in the study is incredibly tedious.

To make the bones, a substructure must be dipped in a mixture of calcium and protein, rinsed, then dipped in a mixture of phosphate and protein…hundreds and hundreds of times. Equipment that can automate the process is available but very cost prohibitive, so the scientists did what they do best and built a set of robots to do the work for them.

Their new bone manufacturing setup was constructed using Lego Mindstorm kits, which were a perfect solution to their problem in several ways. The kits are relatively cheap, easy to construct, easy to program, and able to perform the same function precisely for days on end.

Now instead of burning time manually creating synthetic bone samples, the group can focus on the more important facets of their research.

Continue reading to see a video presented at the 2012 Google Science Fair, showing how everything came together for the crew at Cambridge.

[via Make]

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A custom LEGO throne for Dune's Baron Harkonnen.

A Throne For LEGO Baron Harkonnen

If you’re both a LEGO and a Dune fan, unless you’ve been living in a cave on Mars with your eyes shut and fingers in your ears, you’re probably aware that LEGO released a set for the royal Atreides ornithopter. The blades flap and everything. Anyway, it comes with several minifigures, including one that doesn’t quite fit with the others — a full-length Baron Harkonnen.

The inner workings of the Baron throne, showing the Baron affixed to his stepper motor. Given that, [gorkyver] decided to create a throne for the Baron that he could rise from, just like in the movie, while delivering the iconic line. With no reference materials available other than pausing the movie, [gorkyver] created a throne from scratch in BrickLink Studio, which made it easy to generate both a parts list and step-by-step instructions.

At the heart of this build is an Arduino Nano, which takes input from the momentary push button and starts the show. The Baron slowly rises on a rack and spur gear connected to a stepper motor, and a DF Player Mini runs the audio through a 75 mm speaker.

Rather than just buying a big box store display case off of eBay, [gorkyver] recreated the skeleton in Fusion 360 and used a hairdryer to bend a sheet of PET-G around to enclose it. A couple of sweet adhesive graphics later, and it totally looks like a real set on display. Don’t miss the demo/build video after the break.

Did you hear? The European Space Agency printed some bricks out of meteorite dust, and there might be one on display near you.

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LEGO Bricks: Now Out Of This World

Now the eyes of space explorers are turned once more towards the Moon, there are a whole host of new engineering challenges facing engineers working on lunar missions. One such challenge relates to how any proposed Moon base might be built, and as European Space Agency (ESA) researchers turn their mind to the problem they’ve taken a uniquely European approach. They’ve made some LEGO bricks.

Sadly lunar regolith is in short supply in Europe at the moment, so as a stand-in they’ve ground up a meteorite, mixed the powder with a polymer, and 3D printed their bricks. The LEGO write-up is a little long on frothy writing style and a little short on the science, but it seems that they clutch in exactly the same way as the official bricks from Billund, and can be assembled just as you would a normal set of bricks.

It’s with some regret that we have to concede that Europe’s off-planet outpost won’t be crewed by LEGO people in a base made from LEGO bricks, but we applaud them for doing this as a practical test given the limited supply of starter material. LEGO themselves have snagged some of them to display in a range of their flagship stores, so we hot-footed it down to London to catch some pictures. What we found is a single brick in a glass case, sadly looking very like any other 3D printed brick in a shiny grey medium. It’s probably the most expensive brick in the world though, so we doubt they’ll be available to buy any time soon.

If you’re hungry for more of all things LEGO, we can do no better than suggest a trip to the mother lode, in Billund, Denmark.

AI + LEGO = A Brickton Of Ideas

What if there was some magic device that could somehow scan all your LEGO and tell you what you can make with it? It’s a childhood dream come true, right? Well, that device is in your pocket. Just dump out your LEGO stash on the carpet, spread it out so there’s only one layer, scan it with your phone, and after a short wait, you get a list of all the the fun things you can make. With building instructions. And oh yeah, it shows you where each brick is in the pile.

We are talking about the BrickIt app, which is available for Android and Apple. Check it out in the short demo after the break. Having personally tried the app, we can say it does what it says it does and is in fact quite cool.

As much as it may pain you to have to pick up all those bricks when you’re finished, it really does work better against a neutral background like light-colored carpet. In an attempt to keep the bricks corralled, we tried a wooden tray, and it didn’t seem to be working as well as it probably could have — it didn’t hold that many bricks, and they couldn’t be spread out that far.

And the only real downside is that results are limited because there’s a paid version. And the app is kind of constantly reminding you of what you’re missing out on. But it’s still really, really cool, so check it out.

We don’t have to tell you how versatile LEGO is. But have you seen this keyboard stand, or this PCB vise?

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A hand holds a LEGO replica of a Polaroid camera. The back of the "camera" has been removed to show the sereies of Technic pieces inside that allow the camera shutter to work.

How A LEGO Set Is Born

LEGOs are the first window into making something in your head become real for many makers. The Verge dug into how a LEGO set itself goes from idea to the shelves.

While most sets come from the minds of LEGO designers, since 2008, fans can submit their own sets to LEGO Ideas for the chance to become a real product. In this case, we follow the journey of [Marc Corfmat]’s Polaroid OneStep Camera from his initial attempts at LEGO stardom with his brother [Nick] to the current set that took off.

While the initial idea and build are the seed for a new set, once the project is in the hands of LEGO, designers meticulously make revision after revision to ensure the set is enjoyable to build and any moving parts continue to function for thousands of cycles. This is all weighed against the total cost of the BOM as well as any licensing required for intellectual property. One particularly interesting part of the article is how designers at LEGO are afforded a certain number of “frames” for custom bricks which leads to some interesting hacks and collaboration as all good constraints do.

For more LEGO hacks, checkout LEGO’s long lost cousin, testing LEGO-compatible axle materials, or these giant LEGO-like pieces.