Archive for the 'Articles' Category

Cigarette lighter casemod

Saturday, March 25th, 2006
In the past when I’ve needed 12v DC to power something, I brought out my large, heavy 10 amp power supply left over from my ham radio days. Most commonly I do this to power my GPS while I program it from my computer for an upcoming trip. It would be nice to be able to power 12v items directly from the computer, since it already has a power supply built into it. So I rigged something up, and thought I’d post my work here in case anyone else might be interested.Here’s what you’ll need -
  • 4 pin male molex connector - you can’t cut this from an old power supply, those are female ends. You can pirate one from an old CPU or case fan, though.
  • fuse holder - I had some around, you can buy one from Radio Shack or salvage one from somewhere
  • cigarette lighter socket - I bought mine from walmart for less than $5
  • one of your 5.25″ drive bay covers

All parts for the cigarette lighter casemod project

I wired the molex connector up to some spade connectors, which then connect to the power socket. The spade connectors were included with the socket I bought. You’ll definately want to fuse this socket, you wouldn’t want to screw up your power supply if something went wrong with a device you had plugged in. In the worst case senario you could end up damaging your computer components too - so be sure to fuse it. No more than a 10 amp fuse, 5 would be better. I didn’t have any 5’s around so I used a 10. Oh yea, and be sure to use the yellow wire on the molex connector, not the red one. The red line is only 5 volts. I used wire crimps to hook everything together, but you could soldier it if you have lots of time. You could tape it if you don’t have soldiering equipment or wire crimps, but make sure it’s taped well enough that it won’t come apart!

Power cord for cigarette lighter casemod

Then - this is the hardest part - drill a 7/8″ hole in your drive bay cover. Actually this part is very easy if you have a unibit, a special drill bit for drilling holes in plastic and other soft materials. Otherwise you’ll have to use a regular 7/8 drill bit. It might be hard to drill a clean hole with that. Be sure to step drill it.

Unibit for the cigarette lighter casemod

Then insert the ligher socket into the drive bay cover, and tighten it down. The socket comes with an outter ring you screw onto it from the back, this holds it tightly into whatever you are mounting it into.

5.25 bay case for cigarette lighter casemod

Then install your cover back into your case, and plug the power plug into one of your available cords from your power supply.

Finished PC case for cigarette lighter casemod

The only small problem I’ve had is when pulling plugs back out of the socket, sometimes the drive bay cover wants to pop out of the case. This may or may not happen to you depending on how your case works. I might put a few drops of glue or something on there to hold it in better.

PodAdmin 0.3 Released

Sunday, February 5th, 2006

After Mike’s presentation on Podcasting in January, I thought a little about how it might be difficult for some to put together an XML podcast subscription file. So I wrote some software to do it. PodAdmin uses PHP and MySQL and provides a web-based interface for offering MP3 files via a podcast subscription.
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Burning CDs in Linux

Saturday, February 4th, 2006

Brion Hase - Sioux City Linux Users Group

Intro

This is document is an introduction of how to do the following in Linux:

  • Burn ISO images to IDE CDROM CD-W/.CD-RW drives
  • Create ISO images from a CD in an IDE Drive
  • Copy data CDs with an IDE CD-W/CD-RW drive.
  • Mount ISO images as live files systems to review or change
  • Ripping Audio CD’s to Wave and MP3 files
  • Burning Audio CDs using Wave Files
  • Using GUI interfaces to rip, create and burn CDs in Linux.

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Sed —- The Stream Editor

Saturday, February 4th, 2006

Sed —- the Stream EDitor

Sed was developed some time after the creation of grep back in the mid 70’s.
It works like a filter — deleting, inserting and changing characters, words,
and lines of text. The user sends a script of editing instructions to sed, plus
the name of the file to edit (or the text to be edited may come as output from
a pipe). Sed’s default function is to always print every line it reads to the
standard output(stdout). The command structure basically is as follows

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Intro to Bash and the Linux Shell

Saturday, February 4th, 2006

Presented to the Sioux City Linux Users Group
By Ryan Stille

In most installations, as soon as you get Linux installed, you get a nice graphical interface and rarely if ever need to make use of the so-called terminal mode (aka shell prompt).

However, in Linux the simple, modest terminal is not merely an afterthought, but an extremely powerful tool. While it may be true that you don’t need to use it, it’s not that difficult to learn, and very useful to know. 

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Quanta editor and FTPfs

Thursday, February 2nd, 2006

Quanta Plus is a highly stable and feature rich web development environment. The vision with Quanta has always been to start with the best architectural foundations, design for efficient and natural use and enable maximal user extensibility. We recognize that we don’t have the resources to do everything we would like to so our target is to make it easy for you to help make this the best community based desktop application anywhere. Pretty much everything in Quanta is designed so you can extend it. Even the way it handles XML DTDs is based on XML files you can edit. You can even import DTDs, write scripts to manage editor contents, visually create dialogs for your scripts and assign script actions to nearly any file operation in a project. You can even look at and communicate with a wide range of what happens inside Quanta using DCOP.
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MySQL Command Line Tips

Wednesday, February 1st, 2006

MySQL Command Line Tips

SCLinux.org – Brion Hase

Why Learn MySQL

Huge installed base - 4 million MySQL installations worldwide and 30,000 downloads of the software per day.

Free database to start/continue learning SQL with.

Runs great on Linux, very stable and very fast.

Open Source Software – you can make modifications to the source code.

Transactional support, online backups, clustering
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