1000W Search Light – Now Build A Bat Signal

October 22, 2010 by 41 Comments

Forget flashlights, and leave those burning lasers at home, [Ben Krasnow] built a search light using a 1000W xenon arc lamp. That box you see on the side of the trash-can housing countains a starting circuit that shoots 30 kilovolts through the xenon lamp to get it started but it is separate from the power supply. [Ben] started experimenting with the lamp back in April but recently finished the project by using the inverter from an arc welder to get the 50 amps at 20 volts needed when the lamp is on.

The insert on the left of the image above is an outdoor picture of the beam. You can make out a tree at the bottom. Take a look at the video after the break for a full walk-through of the circuitry and some test footage of the finished product.

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Seaswarm: We Can Clean Up The Gulf In A Month

August 29, 2010 by 48 Comments

Want to clean up the Gulf of Mexico oil spill in one month? Seaswarm says it can be done with 5000 floating robots.

As the name implies, the project uses swarm robotics. Each unit draws power from the sun, and drags around a conveyor belt of oil absorbent nanofabric that doesn’t get wet in water. Once the fabric is saturated with crude it can be removed using heat; not a task the swarm can do by itself. But get this: after separating oil from nanofabric both can be used again. That means you get the environmental benefit of cleaning up the Gulf, not throwing away your collection medium, and the oil is once again a usable commodity. Sounds like a lot of high promises, but take a look at the video after the break and decide for yourself.

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OpenWRT On A Seagate FreeAgent Dockstar

July 17, 2010 by 50 Comments

The Seagate FreeAgent Dockstar aims to make all of your stuff available online. It serves that purpose but sometimes you just want more options for controlling your hardware and running some scripts. [Eric Cooper] put together a guide for installing OpenWRT on the Dockstar by building your own kernel and loading it onto the internal storage. Once you have a kernel that will play nicely with the hardware, you can install it by tunneling in through SSH; the same method you would use if you wanted to run Linux on this hardware. If you have problems along the way, [Eric’s] also included a guide for cracking the Dockstar open and connecting a serial cable.

Seawater Cooled Data Centers

September 22, 2009 by 89 Comments

swac-mauritius

Remember Mauritius from High School geography? We didn’t either, but apparently it’s a small island nation east of the southern tip of Africa. It seems they are trying to develop an industry in eco-friendly data centers. The plan is to use a pipeline to gather cold water from the ocean, run it two miles to the island, and use it as inexpensive cooling. Because rooms packed with servers generate copious amounts of heat it’s easy to see how this can reduce the cost of maintaining a data center.

The thing that struck us here is, how eco-friendly is this? The article mentions that this technology is fairly mature and is already used in several places. With that in mind, isn’t this just another way to raise the temperature of the oceans, or does the environmental savings of not using electricity or gas to produce the cooling offset this?

[Thanks Vesanies]

Laptop Running On A Sealed Lead Acid Battery

September 20, 2009 by 24 Comments

steupup_box

[Viktor’s] laptop needed a new battery; he had the trade off between carrying around a cheap but heavy sealed lead acid (SLA) battery, or buying an expensive but light Li-Ion battery. Figuring his old laptop was pretty heavy already, and having an unused SLA available, re-purposing it for his laptop wouldn’t be too much of a hassle. Using a boost converter he built out of a custom dip MAX668, he is able to output the necessary 5 amps required. An MC 34161 voltage monitor chip is planned for future revisions, but he’s currently running it just fine. Check out some of his other cool hacks on Karosium.

Related: MSI Wind extended battery

Real Time Searching

September 2, 2009 by 5 Comments

reallivesearch (Custom)

With the fresh competition of Bing, we are reminded that search engines haven’t changed much since Google came along. Bing has made some nice advancements, like video previews, but still has a way to go to be truly different than Google. [Long]put together this prototype of a real time search system based off of Bings API. He was inspired by Google Wave which we hope to see soon. Wave is primarily for communication, redefining how email and messaging would work. We can’t help but think that Google probably has some cool stuff in the secret vaults for searching too.  [Long]’s project seems like a decent start, but like the goodtimes.searchengine, we think it needs some work. What happened to the cool video previews? More importantly, why can’t we turn off the parental filter?

Experimental Search Engine Display

August 26, 2009 by 18 Comments

gtse

goodTimes.searchEngine is an experimental set up to display search engine results. Be sure you’re using Firefox or IE, because it isn’t working with chrome right now.  [Gordon] pointed us to it and asked for our feedback. We had a pretty quick list of improvements we would like to see, such as the category changes not popping up in new windows, or the new windows appearing on top for that matter. Or most importantly, a way to transition from the fancy preview window to a new tab or window. We are curious to hear your thoughts on this. What would make it better? Is it even needed? Is he building a tool to fix a problem that isn’t there? With Bing showing some nice new features over google, would something like this be of more use?