11h.net

The blog of 11h

January 13th, 2008

How to: Make a cheap monitor stand

A while ago, I picked up a several 17″ LCD monitors for pocket change. They were old monitors from a school district in the Seattle area that had upgraded their computers. The only problem with the screens was that they didn’t have any stands. I’ve had the screens for almost a year and I haven’t used them solely because I haven’t found a stand for them. Today, I finally gave up finding cheap stands and just made some. The following is a quick how to make a LCD monitor stand.

Materials:
acrylic sheet (anything larger than 32cm x 12cm and 0.23622 cm thickness)
aluminum foil
ruler
drill
drill bits
screws
heat source
plastic cutting knife

First, cut a piece of acrylic about 1cm wider than the center of the mounting holes on each side on the mounting area on the screen and long enough to reach the bottom of the screen plus a little extra. The extra is so that you can bend and create a base for the screen. For my Dell screen I cut a 12cm x 32cm piece. That leaves 1cm width of extra acrylic on each side and a lot on the bottom.

Next, mark on the acrylic where the mounting holes reside on the back of the screen. The holes on my screen were 10cm apart in a square. Drill the required number of holes in the diameter of the screws. Make sure it mounts properly.

Measure or eye where the acrylic will need to bend to be effective to hold up the screen.  Cover the acrylic that you do not want to bend in aluminum foil. Leave about a 1cm gap where the acrylic will bend. The foil will help protect the acrylic from getting hot enough to be malleable.

Use a heat source to heat the acrylic. I used my stove. Hold the work piece over the heat source until it begins to bend on it’s own. Why work when gravity will do it for you!

Once the work piece is hot, bend to a 90 degree angle. The weight of the screen will cause this thin acrylic to bend a bit.

If you feel adventurous, you can repeat the heat bending process to make a neat base.

January 7th, 2008

I’m kicking my ass, do you mind?

Sometimes I wish that I could kick my own ass.

A long time ago, in a far away galaxy, I installed slackware on a hard drive. The thought was that I could use this drive as an emergency drive to power-on and back-up dying systems or resurect dead ones. So clever I was that I setup a very generic kernel to ensure that it would boot on any system. So clever I was that I changed the boot image from vmlinuz to vmlinuz.old and then changed lilo.conf to boot from vmlinuz.old. It took me five kernel compiles to catch on… Hint, the Linux 2.6 ‘make install’ copies bzImage to vmlinuz [but not vmlinuz.old]. What an idiot!

January 7th, 2008

Offline?! Burning?!

Offline. what?! My server, offline?!

“No way” I said to my self while traveling in France when trying to log into my server. There’s no way a fully redundant server has failed. UPS, dual CPU, hardware RAID5 with hot-spare. Down. Out. Not responding.

Thanks to Brian, I was finally able to move my file server out of the rack to a location where I could work on it. After a few minutes of debugging, I finally figured out why the server had failed:

Yes, I know that it is 2008. Yes, I know that ISA is extinct. I love old hardware. I like to recycle old things and bring them back to life. There’s no reason to throw something away simply because it’s old. Reuse, Recycle, reclaim!

For the last three years, this PCI and ISA CPU add-in board has been the backbone to my home network. It was a dual 550 MHz PIII with a 250 GB RAID 5 array with hot-spare.

It’s time to replace. One of the disks in the RAID failed in September and the controller immediately began rebuilding on the hot-spare. Now, it looks like the cap on the +5V rail on the ISA connector shorted, causing the D16 pad to burn itself right off the board. Glad to see that the PS was able to supply enough current to burn the pad off the board and NOT shut down…

Since this board is no longer functional, it is going to be reclaimed for its metal content.