Custom Cable Management

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You would be hard pressed to find a hacker who doesn’t have in some form a rats nest of wires and cables behind their computer desk. [Antoine] decided to tackle the problem and came up with his custom built cable management system. There is little info, but he does say his setup uses Ikea Antonius coat hangers and some hollow tube. Its quick and wont leave a residue like some cable solutions, so long as you don’t mind a screw hole or two. We especially like how if you need to change your setup you wont have to re-zip tie everything.

Ikea LED Matrix

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[Spikenzie] has created an 8×8 LED array that fits inside an ikea frame. He multiplexed the 64 red LEDs on a PCB with connections on the back. He then used a MAX7129, an LED multiplexer and driver, driven by a PIC over SPI to do animations and play pong. He then encased the array in laser-cut cardboard and white acrylic to get large dots. This entire assembly was then placed inside an Ikea RIBBA picture frame. The result is an aesthetic homebrew display that is easy to control.

Related: 64pixels are enough

Colorize Your Election Party

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[Eric] has put together a simple python script to scrape election results from CNN.com. It uses urllib2 to return the popular and electoral votes for each party and throws an ElectionWon exception when CNN calls the race. He’s planning on hooking this to DMX controlled RGB LED lighting that will shift to either blue or red as the night progresses. It’s a great starting point if you want to pull off something similar.

You may remember [Eric] for building the IKEA MAME table and the TRS-80 wireless terminal.

[photo: skenmy]

UPDATE: [Garrett] of macetech is putting the finishing touches on his version which uses 32 ShiftBrite modules and 2 4-digit displays controlled by a CuBLOC.

Uv Oven From An IKEA Cabinet

This may not be an amazingly complicated project, but it is a very elegant and fairly cheap way of building a UV oven for exposing PCBs. [aris] started with an IKEA FIRA cabinet. He basically left the framework as an empty shell and made a make shift top hinged door to enclose it. Mounted in the top is an array of 35 UV LEDs powered by an HP printer transformer.  He did not have a timer circuit, instead he just watched the clock and unplugged it at the right time. You can see from his pictures that his results were quite good.

If you don’t want that piece of furniture taking up room, and don’t mind using a little more elbow grease, you could follow our directions on how to make your own single sided PCB. If money isn’t an issue either, you can always just get your PCBs laser etched.

Another IKEA Linux Cluster

In a bit of serendipity, reader [Tim Molter] had decided on the IKEA Helmer cabinet for his new cluster right before seeing the previous IKEA cluster we covered. He and his coding partner recently completed building their own version of the IKEA Linux cluster. The cabinet was $30 and holds six headless boxes. Each board has a quad-core AMD processor for a total of 24 cores. They also feature 1GB of RAM and an 80GB laptop SATA drive. The latter was chosen because of space limitations in the case. [Tim] describes the Helmer cabinet as being almost perfect. The power supply lines up with the top edge of the drawer and the motherboard fits with a millimeter to spare. Power buttons were added to the front plus slots for airflow. It looks like a really clean installation and at $2550, incredibly cheap for the processing power.

IKEA Linux Cluster


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]

24 Core Ikea Cluster


[Janne] does freelance animation and wanted something with a bit more CPU to get his rendering jobs done. He picked up an Ikea ‘Helmer’ cabinet and refitted it to hold six Intel quad cores, six Gigabyte motherboards with 8GB of ram each and six 400 watt power supplies. He seems happy with it – I think it just needs some custom power wiring and an integrated Gig-E switch to achieve perfection. What? I’m not jealous at all.