Aside from having a very cool name, parasitic power is an innovate way to recapture already spent power. This power can come in the form of wasted heating or cooling of a building for example. Last week the Southern Methodist University activated the first commercial Green Machine from ElectraTherm. The unit recycles residual heat from the building into electricity. So far, the 50kW Green Machine has exceeded expectations. The company also says owners can recoup the units cost after about three years.

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We’ve started to noticing a lot of commercial electric bikes on the street. Last year we looked at an electric trike project, after the break find out what people have been up to lately with similar projects.

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Time to look way back into the Hackaday archives, well back to 2005 at least. This is a new feature to follow up and revisit some of our favorite projects of the past. Our first installment includes the week of May 24-31 2005.

Pictured above we see one of the amazing cable braiding machines from UK based Cobra Machinery. This link was found on a post about creating your own high end speaker wires from cat5 cable. At the time we hoped to find a DIY braiding machine. No such luck today but we did come across and interesting site in the process. diyAudoProjects has a ton of great how to guides for all things audio. They even have a few walkthroughs for creating your own speaker wires.

We looked at the robotic dexterous hand from The Shadow Robot Company. Browsing through their high rez image gallery its pretty clear to see the product has been progressing nicely: 24 degrees of freedom complete with force feedback and a GPL based software package.

Three years ago we covered the Nokia 770 internet appliance and it’s upcoming SDK. The device has now been replaced by the Nokia N810 (pictured on the right). However, open source support from Nokia has continued to develop. We found a blog from software developer Ari Jaaksi where he talks about Nokia’s involvement in the community. Recently he discussed the latest news from MAEMO, the platform used for open source development of Nokia internet tablets and other Linux-based devices.

There are several very nice 3D mice out there for navigating services like Google Earth or Second Life. 3Dconnexion for example makes a whole line of devices for 3D navigation. Their compact units offer 6-8 degrees of freedom with several customizable options. The company has an SDK available and many of their devices are natively compatible with Linux (or available for access through an XInput driver). So while that is all well and great, lets look at some alternative ways people are navigating 3D spaces.

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Lots of con news is coming in these days so lets do a quick roundup of upcoming events:

REcon
June 13-15, 2008
Montreal, Canada

REcon has started posting information about their training sessions such as the Advanced Reverse Engineering session with Nicolas Brulez.

The Last HOPE
July 18-20, 2008
New York City

The Last HOPE just announced its speaker list. It includes the infamous Kevin Mitnick, Mythbusters co-host Adam Savage, and author Steven Levy to name a few.

DEFCON 16
August 8-10, 2008
Las Vegas

The DEFCON team also released the first batch of speakers for this year’s convention. Qualification starts tonight at 10PM EST for the capture the flag (CTF) contest so be sure to get registered. Check the txt for more information. We recently talked about the beverage cooling contraption contest, but you can find many other contests on the forums.

Since it happens to be the day after a nice holiday break, many of us are finding ourselves back in front of our desk once again. Perhaps some of you never left it the entire weekend. In any case, it seems fitting to take a look at a few interesting integrated desks we’ve come across lately. Follow through after the break to see our favorites.

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Building a render cluster doesn’t mean you have to spend a lot of money, even if you’re buying brand new hardware. [Janne] built this 6 unit cluster inside of a 6 drawer IKEA Helmer cabinet. He wanted the cluster to be low power and low cost. After finding a good price on 6 65nm Intel Core 2 CPUs, he found 6 cheap Gigabyte motherboards. The memory on each board was maxed at 8GB. With 24 2.4GHz cores consuming 400W, the power consumption and cost isn’t much more than a high end PC. Each board is running Fedora 8 and mounts an NFS share. Dr Queue is used to manage the render farm’s processes. [Janne] says jobs that previously took all night now only require about 10-12 minutes. The estimated capacity is 186Gflops, but plans are already in motion for a12Tflop version.

His site also has plans for an underwater camera housing like our recent post. If you want to see more IKEA abuse, check out IKEA Hacker, even if it’s not very technical.

[via Hackzine]

[UPDATE: yep, we duped ourselves]