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."
Oh yes, those.... they are actually very very bad for you. I used the Sun metal mousepad for quite a while.
When you use a mouse, your wrist will actually rest on the mousepad quite often. A metal one will drain the warmth from your wrist nicely, which does nothing to help prevent Carpal Tunnel Syndrome. After a few months of using this thing my wrist started to hurt, and my physician recommended "keeping my hands warm", even wearing gloves, since cold hands and wrists are more susceptible to CTS than warm ones. I switched to a regular mouse and my problems went away.
No bloody way I am ever using a metal mosuepad again. I'm using an optical mouse now that requires no mousepad at all.
If construction was anything like programming, an incorrectly fitted lock would bring down the entire building...
You don't get it.
It turns on a multiway mains adaptor (powerstrip, four way etc.)using the 12V as a signal from your PC, so everything will go on and off at once. The power does not come from the power supply in the PC.
It was pretty clear from the article.
[From the DV Hardware link]
The black colored Steelpad comes from Denmark and is made out of a 3.5mm aluminium plate.
So the Steelpad is made of aluminum; that makes sense.
It's also hardended [sic] to ensure the durability under all conditions
That's good, too: I know my mousepads always ended up twisted and mangled from daily use...
I want to drag this out as long as possible. Bring me my protractor.
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.
For fuck's sake...
DV Hardware a little article about an aluminium mousepad, called the Steelpad
Wow, and to think all this time I've been using nice, soft gel. Time to throw that out and get me a nice block of steel...that'll do wonders for the 'ol carpal tunnel...
To make a pun demonstrates the highest understanding of a language