Hardware Bits

Zygo writes "Again a little bit of hardware news for today: At MonkeyReview a very cool case... At DV Hardware a little article about an aluminium mousepad, called the Steelpad... OCCanada takes a look at the Gigabyte GA8PE667-Pro... ExtremeMHz brings you a guide to power... Some Christmas stuff... And Modthebox checks out a cool tachometer for PC's!" richie2000 submits a holiday-themed case mod: "A gingerbread case mod. Don't tell me you didn't see this one coming. And here's a mirror of one of the images."

Comments

Geeks with no electrical knowledge?

[cybergibbons]

The article at ExtremeMhz with the relay controlling the four way is pretty bad. Messing with mains voltage if you do not know what you are doing is stupid - and things like this encourage people.

First off, the bit about the relay mentions that there is an AC side and a DC side. WTF? There is a coil, and there are switch contacts. Next, he says that they are rated in current and voltage. Yes, true, but a voltage for the coil, and voltage and current ratings for the contacts (for AC and DC). A "12V 10A relay" means very little. I have what could be described as a "12V 45A relay" here. It has a 12V coil and will switch 12V at 45A. Not mains (110V or 240V). See how easy it is to get this wrong when people just copy your article.

In this country (UK), a 10A relay is not enough to power a four way. A maximum of 13A can be drawn through a plug, so you would need a higher current rating on the contacts of the relay. I do not know about the US, but because it is 110V, I would assume currents to be higher. This relay is probably quite inadeqate.

And if you have to tell someone how to drill a hole into a plastic box, surely they aren't competant to play with mains?

Moving on. He mounts a mains voltage relay inside a plastic box with absolutely no regards to strain relief on the cables. All it would take is a trip on the four way and the cables would be yanked out the box, possibly leaving live conductors bare. Not good at all.

Also, those "quick disconnects", which are called spade connectors, should be covered by a plastic shroud when they are used on a relay such as that. There is the possibility of the 12V wire coming into contact with mains, which would have dire consequences. Also, try fixing the relay into the box...

I'm just not keen on the number of people who write things like this, essentially idiots guides, which people blindly follow. They aren't a good idea when people can get hurt.

It reminds me of a rudeboy car magazine I read which showed you how to install NOS into a Citreon Saxo. Drill this, thread this, this colour wire goes here, etc. No explanation of how or why... quite ridiculous really.

Re:Geeks with no electrical knowledge?

[evilviper]

As someone (with extensive electrical knowledge) from the US, allow me to say how I am continually surprised how few accidental electrocutions there are anually. Many, many, unqualified "weekend" electricians like to "fix" things in the most half-assed ways. You would find it hard to imagine (as I did) the dangerous situations lurking around most homes due to bad wiring.

My own relatives were routinely plugging-in and unplugging a toaster who's rubber shielding had been damaged near the plug. I cringe at the thought of such terrible practices, but a surprising number of people are exposed to similar conditions multiple times every day, and yet surprisingly few get killed, although, there are no shortages of stories about kids who cut through lamp cords, or electricians who don't shut off circuit breakers, and get knocked 20 yards (err... meters) across a room.

Perhaps if the standard US voltage was 220V like much of the world, there might be far more fatalities. In addition to the low voltages, GFI outlets or very common, which protect those people that like to take a bath along with their hair dryer, radio, etc. Although, a huge number of house fires are caused by electricity.

So, I agree that things like this are very irresponsible, and dangerous, but they are not uncommon, and are probably less dangerous than conditions many people are exposed to on a daily basis. In my opinion, power lines should be converted to around 50v DC before they enter a residential home. Although that wouldn't help those poor bastards that decide to put up their TV antennas near high-voltage power lines.

Dear Slashdot:

[onomatomania]

Please, for the love of god, never link to dvhardware.net again. Fer christ's sake, with a readership in the tens to hundreds of thousands, you'd think Slashdot could accept articles that feature quality sites... which dvhardware.net is NOT. Hmmm, let's have a look at the checklist for crappy hardware reviews:

1. Article split into unnecessarily high number of pages? Check.
   
2. Verdana microsized font (specified in pixels in the stylesheet) which is unresizable? Check.
   
3. Terrible spelling and grammar? Check. (Note: I realize that English was probably not the author's primary language. Nevertheless, it doesn't excuse passages such as this:

   One of the good things about it is the material it's made of , aluminium. Another good thing is that the pad looks very cool! One of the downsides of the pad is the noise, the pad makes lot's of noise when you're moving your mouse on it. And then another thing , which is good and bad together :p , the pad always feels cold. This would be very good in summer but now in winter it feels too cold.

   If you want to be taken seriously you must write articles that don't sound like a twelve-year-old puked on the keyboard.
   
4. Useless pictures that look like they were taken by some retard with a digital camera, featuring a "click on me to enlarge" link which doesn't help at all? Check.
   
5. Overall vapid commentary that ends with a predominantly positive rating, in this case three stars? Check.
   
   For fuck's sake...