[Markus] noticed a lack of 7 segment LED displays that could show RGB. Like any hacker, he sought to remedy this. The solution he came up with was to basically remove all the electronics from the plastic body of the display. He then mounted new surface mount RGB LEDs in the correct places. This may be a bit messy, and definitely increased the footprint in this layout, but as you can see from the pictures on his site, the final result is quite nice. What uses can you think of for these?
What would you do if you were driving along the highway and you glanced into a field to see a giant array of fluorescent tubes lit wirelessly from the electromagnetic fields of power lines. Back in 2004, [Richard Box] set up this display after hearing about a friend playing “light saber” with fluorescent tubes under power lines. The tubes can be lit pretty easily by have a variation in voltage between the ends. By sticking one end in the ground and the other up in the air, he’s harnessing the strong magnetic field from the power lines. Though some thought the display was made to bring people’s attention to possible hazards of living near the lines, [Box] states that he did it just because it looked cool.
[via io9]
[Murray484] submitted his instructable on how to create a stepper motor controller from an old scanner. He removed the motor and controller from an old scanner then harvested the parts. He’s pretty much starting over, taking the ULN2003 chip from the scanner motor controller and putting it on a fresh board. He then wired it all up, installed the software and got it working. Finally, he built a container out of cardboard for it all. Though he could have made it nicer looking and used higher quality building materials, he was trying to make this a “green” project for the epilog laser cutter contest. He’s done a good job recycling, this could be pretty useful.
After a few pictures of the CrunchPad tablet leaked onto the internet, Crunchgear decided to release some more info. The prototypes you see are fully functional, have Intel Atom processors, and a 12 inch capacitive touchscreen. There isn’t much else available yet as far as details. What we’re most curious about is how the interface works. As many people who have used tablet PCs or touchscreens know, it’s usually the software interface that makes or breaks the experience. We’ve been curious since TechCrunch talked about what netbooks should be. Can’t wait for some videos.
[Mike] takes us through the process of adding a removable high gain antenna to the WRTSL54GS in this article. The antenna that comes on this unit from the factory is a bit small and underpowered. After upgrading it using OpenWrt, an open source full featured router software package, he felt it needed a beefier antenna. So, he cracked it open. The new antenna can simply be soldered in place, where the old antenna was.
[youtube=http://www.youtube.com/watch?v=2-ELGFunfbs]
[Paul] sent in this Robotfest 2009 exhibition competition entry. This is Jak, the blackjack robot. This seems to be a convergence between a digital game of blackjack and a physical game. The robot scans each card as it deals them and feeds the data to a piece of software that tracks each players hand. The players select their next step on the screen and the robot responds appropriately. They have won 1st place in the Ontario competition and are now going to the international level. Jak wins a round in the video, but we didn’t see him celebrating. Come on guys, make him flash some lights or talk some trash.
[RazorConcepts] has built this cool automated turret. It is a home made frame with an airsoft gun, a Roboduino development board, a rangefinder, camera, and some servos. They programmed it to keep up constant random banter from the game as well as respond appropriately do different inputs. For example, it complains when you pick it up or knock it over as well as announcing if it has acquired a target. The range finder is mounted on its own servo which constantly sweeps back and forth, so the turret itself mainly sits still. You can see that the tracking is not so great in the video. [RazorConcepts] notes in the instructable that this is because the main focus was just to make it for “show”. We’ve seen our fair share of turrets before. We think he did a good job, but if it is just for show, maybe spend some more time on a nice body and smoother motion.
