|  | April 14, 2007
The "Digg" Case January 19, 2007
The "ITX-Laptop" December 07, 2006
The "Tortoise Beetle" October 02, 2006
The "DOS Head Unit" August 31, 2006
The "Janus Project" August 05, 2006
The "Leela PC" June 26, 2006
Nano-ITX in a Football May 17, 2006
The "EPIA Alloy Mod" April 11, 2006
Neatorama's Collection of Case Mods February 18, 2006
The "Rundfunker" |
| | | | October 24, 2005
The "ITX TV" October 06, 2005
The K'nex-ITX August 05, 2005
The "Waffle Iron PC" July 21, 2005
The "Supra-Server" July 18, 2005
The "Mega-ITX" July 07, 2005
The "Encyclomedia" May 25, 2005
The "Accordion ITX" May 16, 2005
The "FileServerRouterSwitch" May 15, 2005
The "Mini Falcon" May 13, 2005
The "Bender PC" May 11, 2005
The "BBC ITX B" May 10, 2005
The "Frame" April 20, 2005
The "Jeannie" March 09, 2005
The "Cool Cube" January 30, 2005
First Nano-ITX Project? January 17, 2005
The "iGrill" January 15, 2005
The "Gumball PC" December 15, 2004
The "Deco Box" December 03, 2004
The "TERA-ITX" October 06, 2004
The "Coealacanth-PC" |
| | | | September 17, 2004
The "Gramaphone-ITX-HD" August 26, 2004
The "C1541 Disk Drive ITX" August 25, 2004
The "SEGA-ITX" August 13, 2004
The "Quiet Cubid" August 06, 2004
The "BMWPC" July 14, 2004
The "Moo Cow Moo" July 02, 2004
The "Mini Mesh Box" June 17, 2004
Jukebox ITX May 24, 2004
The "ERN005PC" (KANA) March 13, 2004
The "Underwood No. 5" February 04, 2004
The "Humidor CL" January 23, 2004
The "Attache Server" January 22, 2004
"Racing The Light" January 21, 2004
VIA's Flat Panel DevKits January 20, 2004
The "Ambulator I" January 19, 2004
The "Borg Appliance" December 19, 2003
The Gingerbread Village Server December 04, 2003
Custom PC's XmasTreePC December 01, 2003
"Windows XP Box" November 12, 2003
"R2D2PC" Full alphabetical archive on right hand side of page... |
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The "Mega-ITX"
Introduction
I have been working with computers for a long time now, but it was not until I moved home from University in December 2002 that I realised how noisy they had become. I now have a PC in my bedroom that kicks out a lot of noise, even using silent components. In addition to this, I have been looking at the Mini-ITX modifications and projects for a long time, and patiently waiting for the Nano-ITX to be realised. By Summer 2004 I finally got bored of waiting and having all that noise I just could not bear any longer, so I finally decided to do something about it.
What I wanted was a computer that would be silent, in the true meaning of "silent," that I could use to check my emails and produce all of my material for my job (teaching) on. I also wanted this to be cheap, especially if there was a chance I could seriously mess it up. Therefore I went with the VIA EPIA 5000 motherboard, purchased from Mini-ITX.com
Components
To start with, I wanted a case before purchasing anything else. This is a key point for anyone building a Mini-ITX project. Get the case first, and then plan the rest of the components around the case, something I am only too familiar with now. Anyway, I wanted something small, unobtrusive and would not look out of place. I finally decided to go "RETRO" and obtained a non working SEGA Mega-CD from EBay for £15 as shown below.
Next, the case was opened-up and gutted as shown in figure 2. Several parts of the casing removed and a part cut out of the back of the case for access to the ports on the motherboard. This then allowed me to measure the space and figure out what components I could fit in to the box.
At this stage I the remaining components. A complete list of parts is given below (just to give you an idea):
• VIA EPIA 5000 Motherboard
• SEGA MEGA-CD
• Slimline DVD-ROM
• 40GB Laptop Hard Disk
• 60W PSU Kit
• Slimline CD Adapter
• 2.5" to 3.5" IDE Adapter Cable
• 256MB Memory (from previous project)
• Netgear 11Mbps Wireless USB
• USB Cable Adapter
Construction
As I said earlier, the case was gutted and several of the plastic parts of the case were removed (see figure 2). I wanted to reduce the noise coming from this system, electrical noise that is, due partly because we have a HAM operator living next door but also to reduce interference with any of my other equipment. This is something that many designs simply ignore or forget about, and is certainly worth considering early on with any design. Hence some of the original metal shielding has been left in place.
The next step was to open part of the back of the casing up to allow access to the ports on the motherboard. I decided at this point to make a hole large enough to allow the standard metal bracket to be mounted:
Initially I was going to sit the motherboard level. However this then creates a major problem. That is that the RAM sits too high to allow for the DVD-ROM to fit in the case and use the original CD opening. I could have moved the DVD-ROM tray and created another opening, but then what’s the point in modding something like this if you are not going to use the original characteristics? At this point, the only real alternative was to sit the motherboard in at an angle, which presents another minor problem that I will discuss later. Two holes were drilled through the case to allow the motherboard to be secured. To stop any shorting, a sheet of plastic was placed between the metal on the casing and the motherboard. The same problem is presented with the PSU board, and so the same solution was applied.
At the start of this project, I thought a motherboard, 17cm x17cm and a case as big as the MEGA-CD would have plenty of room. At this stage it was becoming apparent that I may be wrong. I attached the PSU cable to the motherboard, which instantly showed how tight it was going to get:
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You can buy most of this stuff from the Mini-ITX.com Online Store. We serve the UK, Europe, USA and beyond. If you order before 6.30PM GMT and your items are in stock, we'll ship same day! |
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