Mar 07

Flameless flare

Here’s an interesting gadget that I learned about from the Daily Giz Wiz podcast. It’s the CommuteMate Flameless Flare, a roadside safety device. This has several advantages over traditional safety flares. It uses LEDs and runs on two AAA batteries, so you can’t burn yourself or set your car on fire. There’s a powerful magnet in the base that lets you stick it right on your car if you need to. The Flameless Flare is reusable, and it’s remarkably inexpensive — Amazon.com currently lists it for $4.79.

Mar 03

Under pressure

Following a link from Instapundit, I read a Popular Mechanics article on Extreme Plumbing by Jamie Hyneman of MythBusters fame. Jamie makes the following point about pressure tanks:

The forces at play with high-pressure tanks can be huge. If the energy stored in a workshop air-compressor tank is released all at once, it can hurt or kill a person. I once complained to our insurers, “Why are you so fussy about the explosives we use on the show? Every day we make rigs using pressure tanks that are just as dangerous.” Big mistake. Now they fuss about pressure tanks, too.

As it happens, I was reading this shortly after I got home from Raleigh Little Theatre, where I spent all day working on the first technical rehearsal of House of Blue Leaves. I am assistant stage manager for this play, and one of my responsibilities is to handle the special effects that are used when, halfway through Act 2, a bomb explodes just offstage. One of those special effects is a compressed-air cannon that fires a load of fuller’s earth through a doorway onto the stage, simulating the cloud of dust and smoke produced by the explosion. The cannon fires when I open a valve that releases air from a pressure tank.
In fact, one of the last things I did at RLT before coming home was to repressurize that tank to 80 psi so that it’s ready for tomorrow’s dress rehearsal. Then I came home and read Jamie’s explanation that pressure tanks are dangerous and can kill you.
Actually, I’m not worried. If you read his entire article, you’ll see that that paragraph is scary only when taken out of context. Sure, pressure tanks can be dangerous if you use them in a reckless or irresponsible way, but the MythBusters don’t do that, and neither do theatre techies like me. Jamie’s article is really about how many of the challenges on MythBusters have been solved with plumbing and pressure tanks, and what that tells us about how useful and powerful that technology is. And fun, of course. I’m certainly going to be careful operating my cannon over the next several weeks, but I’d be lying if I said it won’t be a big thrill to set it off.

Feb 23

Real Alternative

RealPlayer has made a lot of enemies. It’s a free media player, which is nice. But RealPlayer likes to display pop-up advertisements, and it has a history of collecting information about the media files you play with it, leading some critics to classify it as both adware and spyware. When PC World compiled a list of “The 25 Worst Tech Products of All Time” last year, RealPlayer was number 2. (The top offender was AOL.)
But occasionally, you may need to play a file that uses one of the proprietary RealMedia formats, such as .rm or .ra. In that situation, are you forced to use RealPlayer? Not necessarily. On a Windows system, you can use Real Alternative instead. Real Alternative is a codec pack that enables you to play RealMedia formats with Media Player Classic. You can download both Real Alternative and Media Player Classic from the Real Alternative page of freecodecs.com.

Dec 06

Fun with Windows

A couple of months ago, the hard disk on our primary home computer became corrupted, and I had to reformat and reinstall Windows. I was able to do this without losing any data by installing a second hard disk, putting Windows on that, and then using a recovery tool (Active@ UNDELETE) to retrieve our data files from the corrupted drive. After I was sure that I had recovered everything of value from the corrupted drive, I reformatted it and started using it as a backup medium (with Norton Ghost as the backup tool).
That should have been the end of our Windows problems, at least for a while. Formatting the new C: drive and installing Windows from scratch ought to have resulted in a clean, stable system. But something went wrong, because we started seeing odd behavior over the last several weeks. The first warning sign was a folder on my desktop that I could not get rid of — I could drag it to the Recycle Bin and empty the bin, but the folder would reappear on my desktop later. That was annoying, but not really problematic. Then Windows started refusing to shut down, restart, or log out. You could select those actions from the Start menu, but nothing would happen; the only way out was to use the button on the front of the computer. It was clear that our system was unstable, so after making sure that everything was backed up to the other hard drive, I reinstalled Windows again.
If you’ve ever gone through this process (and if you’ve had your computer more than a year or two, you’ve probably had to), you know that the time-consuming part is not installing Windows from the CD, but installing four years’ worth of updates and patches. It takes several hours to get it all done. This time around, it occurred to me that I wasn’t actually doing anything except clicking buttons to tell Windows Update to proceed to the next step. The problem is that after installing each set of updates, Windows needs to restart, but it won’t do so without confirmation from you. And after Windows restarts, you have to manually run Windows Update again to start downloading and installing the next set of updates. In other words, what’s so burdensome is that Windows Update keeps stopping and waiting for manual intervention.
Why can’t the whole process be automated? What’s needed is a Windows Cumulative Update option, which would do the following:

  1. Check for high-priority updates and begin installing them.
  2. When it becomes necessary to reboot, do so automatically.
  3. After each reboot, run Windows Update again and check for more high-priority updates.
  4. Repeat these steps until no more high-priority updates remain, then exit.

Wouldn’t that be simpler? After installing Windows, you could start Windows Cumulative Update and walk away. A few hours later, your Windows installation would be fully up to date without any further action on your part. I hope Microsoft includes something like this with Windows Vista.

Aug 02

Interstate Wi-Fi

To win a contest at DefCon 13, a team of geeks established an unamplified Wi-Fi connection over a distance of 125 miles, beating their previous record of 55 miles. Team PAD did it by connecting their 300mw Wi-Fi cards to satellite dishes: one computer (outside Las Vegas) used a 12-foot dish, and the other (on a mountaintop in Utah) used a 10-foot dish. (I first heard of this amazing feat on the This Week in Tech podcast.)
It is probably not a coincidence that all four members of Team PAD are ham radio operators.

Aug 02

No iPod, no service

If you have iTunes installed on your Windows machine, you are running the Windows iPod service. But if you don’t use an iPod, you don’t need this service. Here’s how to turn it off and save 4MB of memory:

  1. Click the Start button and select Run… from the Start menu.
  2. Type services.msc and press Enter. The Services management console is displayed.
  3. Right-click iPod Service and select Properties.
  4. Click Stop to halt the service.
  5. Change Startup type to Disabled. Click OK and close the console.

If you acquire an iPod, you will have to re-enable the service in order to use the iPod with iTunes. (Thanks to Neil Turner, who described this tweak in his blog.)

May 23

Sanguinivorous

A Japanese research team has developed a fuel cell that can be powered by human blood. This is good news in the short term, because it means that pacemakers and other implants can be designed without batteries that have to be replaced periodically. But in the long term, it means that we’ll have to watch out for vampire robots. Will future Slayers have to carry a lightsaber as well as a stake?

Mar 24

Dave Barry’s gadget bag

Gizmodo is a blog devoted to interesting gadgets like contact lenses that monitor your blood glucose level, or a bottle opener that counts the beverages you consume. A recurring feature on Gizmodo is “What’s In Your Gadget Bag?”, which asks a (presumably geeky) celebrity what bits of technology he or she carries around all the time. Recently, they asked humor writer Dave Barry this question. I was aware that he had used a Palm PDA (because he mentioned it in his column a few years ago), but it seems that he has upgraded to a Treo. “In accordance with federal law, I also have an iPod,” he writes.