Hoverboard Comes To Life

[vimeo=http://vimeo.com/11968215]

This installation by artist [Nils Goudagnin] is a recreation of the hoverboard from Back to the Future II. We would like to see inside that plinth. We’ve seen levitating magnets before, but this is particularly stable. He says he is using lasers and a control system of some kind to stabilize it. Just to guess, we’d say that the lasers determine the distance of the board and an array of electromagnets below is adjusted to keep it level. Then again, we might be over thinking this. Even though it can’t be ridden, we’d love to have one around the office just to look at.

What’s The Worst Way To Transmit Video?

Perhaps the worst possible way to transmit video would be to send all pixel data in parallel.  That’s exactly how [Gebhard Sengmüller’s] parallel image device works. To be fair, this is an art piece called “A Parallel Image” that addresses the concept of where we would be if serial data transmission had never come to fruition. The brochure (PDF) accompanying the exhibit gives the juicy details we’re always looking for.

The device consists of a photo sensor unit and a display unit. Both are one-square-meter stripboard panels made of epoxy. The sensor unit consists of a 50×50 grid of photo-conductors that have their counterparts in the 50×50 grid of light bulbs on the display unit. Things start to get pretty crazy when you throw in the 7500 meters of magnet wire that connect the 2500 pixel sensor unit to the display unit.

You should be able to put together how this works. The sensors pick up light and then effect the brightness of the corresponding light bulbs. The result is an interesting image, and a nightmare of wire porn that would drive any TV repairman to drink.

Continue reading “What’s The Worst Way To Transmit Video?”

Industrial Robots Producing Art

[blip.tv ?posts_id=2728039&dest=-1]

Here is an interesting project that should spark some good discussion. Artaic is a company that is using industrial robots to produce mosaics. They are then selling these mosaics as fine art. As you can see, some of the examples are quite nice looking. However, we have to wonder what the draw is to own one that is made by a robot. Is it really that much different from just printing an image? We really do think it is a cool project and an efficient way of producing these mosaics. We would really love to see one of those super fast delta robots doing the work.

We’re trying to reduce the negativity here at Hackaday. We are passionate geeks and hackers, and as such, we tend to jump straight to the negative points. We hope you guys will follow along with us and try to be constructive in the comments. That being said, the video did seem a bit pretentious, didn’t it?

[via BotJunkie]

Ik-a-sketch Collaborative Scribbling

ik-a-sketch

At this year’s PICNIC conference [Neil Mendoza] and [Edwin Dertien] built a giant Etch-a-Sketch to help bring attendees together. The drawing area is a rear-projection screen, rather than a physical powder based setup, and is surrounded by the familiar red frame with vertical and horizontal control knob. Because the two knobs are too far apart for one person to use at the same time, two people must work together to move the stylus.

To help break the ice the device was designed to incorporate social networking. Each knob requires that an RFID (embedded in the conference badges) be scanned by the person controlling it. Both users are then connected as friends through a social network and when they’re done “making art”, the beauty of their creation is delivered to them via email.

We don’t know about you, but our etch-a-sketch attempts have always been crappy. There are some folks who can turn out a masterpiece on the thing, but this is really just meant to grab your interest for a minute or two and help you meet some people. One feature that should be noted, this giant device requires shaking to erase the image.

Repurpose An Unused Portable CD Player

diy_wall_mounted_cd_player

[Ariel] liked the look of the Muji wall mounted CD player. He set out to build his own, posting a how-to that documents his project. The custom paperboard case contains a portable CD player, two portable speakers with amplifier, and a pull-string switch to turn it on and off. With mp3 players sending portable CD players the way of the dodo, and with the proliferation of powered mini-speakers this is a thrift-store build waiting to happen.

[via Boing Boing Gadgets]

Sticky Light

light

With the availability of webcams and projectors, multitouch and interactive demos have become increasingly popular because they’re so easy. Students at the University of Tokyo took a new approach that uses lasers instead. They created Sticky Light, which uses mirrors, a laser, and a single photodetector. Unlike camera-tracking setups, this system requires no visual processing. The laser moves around and bumps into dark objects, sticking to them. It can follow drawings on the table or objects in space, such as shirt designs. They also created a few basic games and a demo that makes sounds based on the movement of the spots. Video of the project after the break.

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Self-portrait Machine

selfportraitmachine

[Jen Hui Liao] created a device that guides the user into drawing a portrait of themselves. Dubbed Self-Portrait Machine, it comments on how much in society is created by machines and we are dependent on them. Unlike previous drawing robots, the user is part of the sketching process. The machine holds the users hands and uses stepper motors and servos to move them around like a LOGO turtle. Liao promises to have more details available soon. Video of the machine after the jump.

Continue reading “Self-portrait Machine”