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"Red is Dead" Optical Mice LED Change

Hemos posted more than 11 years ago | from the i-want-mauve dept.

Hardware 500

A reader sent us the HOWTO for changing that red LED on your fancy-pants new optical mouse to blue - or, I suppose any other color. I think I'm fine with what I've got - although, the glass tops on tables does make using optical mice a pain there.

Sorry! There are no comments related to the filter you selected.

why?? (2, Insightful)

Anonymous Coward | more than 11 years ago | (#4625652)

You don't really stare at the light under your mouse do you?

Re:why?? (0)

Anonymous Coward | more than 11 years ago | (#4625687)

Its funny all the first posts that didn't get first post when this one was on topic as well...

What's Up Abhi (-1, Troll)

Anonymous Coward | more than 11 years ago | (#4625707)

If you read this dog, reply to it. If there is no reply I will be forced to assume that you are admitting to be a homosexual and will publicize this fact while stealing your backpack in Econ.

Re:why?? (0)

Anonymous Coward | more than 11 years ago | (#4625711)

No, but a red light helps you to find your mouse in the dark.

Re:why?? (0)

Anonymous Coward | more than 11 years ago | (#4625720)

almost any light source would help in that situation...i think its called a light switch, try it next time

green is cooler (-1, Redundant)

Anonymous Coward | more than 11 years ago | (#4625656)

blue is out. green is in.

Re:green is cooler (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4625736)

bus (-1, Redundant)

Anonymous Coward | more than 11 years ago | (#4625659)

my bus is blue too

Why (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4625660)


woodgrain (1, Insightful)

Anonymous Coward | more than 11 years ago | (#4625662)

it doesnt like wood grain either.


Re:woodgrain (0)

Anonymous Coward | more than 11 years ago | (#4625721)

I have a wood grain desk and it works very well...

Re:woodgrain (0)

Anonymous Coward | more than 11 years ago | (#4625748)

My intellimouse works great on my oak ply desktop

Re:woodgrain (2, Informative)

chrisseaton (573490) | more than 11 years ago | (#4625812)

Works fine for me

what about ultra-violet? (3, Interesting)

dirvish (574948) | more than 11 years ago | (#4625663)

Can you use a black light?

Re:what about ultra-violet? (2)

meatspray (59961) | more than 11 years ago | (#4625727)

Not too sure about UV but most ccd's are sensitive to infra-red.

Re:what about ultra-violet? (3, Informative)

Anonymous Coward | more than 11 years ago | (#4625806)

UV LED light output sucks right now. There are severe materials limitations in their construction. However, if you had a bright enough UV LED, it should be possible. Just don't use IR. Si is transparent to IR, and this is most likely what the detector is made out of.

Re:what about ultra-violet? (5, Funny)

grub (11606) | more than 11 years ago | (#4625875)

Yeah, that would be smart. All over the world geeks would be getting major sunburns on their right palms. :P

frist p0rst (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4625665)

(Use the Preview Button! Check those URLs! Don't forget the http://!)
Plain Old Text HTML Formatted Extrans (html tags to text) Code

Yay! I got the first post! (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4625666)

Hurrah to me!!

logitech is blue... (5, Interesting)

b_pretender (105284) | more than 11 years ago | (#4625670)

When I bought my Logitech optical a 1.5 years ago, I stopped at RadioShack on the way home to pick up a blue LED. I was planning to change it first thing when I got home.

However, upon pluggin my mouse into the computer, the logitech logo and mouse in general glowed blue!!! I was happy. Although the LED on the bottom was red, they had an *extra* LED that was blue for the logo and the *glowing* plastic. That made my day and it involved NO soldering.

Re:logitech is blue... (1)

Pred (315149) | more than 11 years ago | (#4625753)

I assume you mean the Mouseman Wheel Optical. Its a shame they don't make them anymore (and you still pay full price if you buy from a retail store!) because its a great mouse. I wanted to get another for my new computer and had to settle for the uglier Intellimouse Explorer

Re:logitech is blue... (3, Interesting)

Wiseazz (267052) | more than 11 years ago | (#4625756)

I'm looking at my Microsoft optical now... it looks like it also has a seperate cosmetic led for the logo on the back... I may just try swithcing that out instead of risking the one used for tracking (there may just be one... I haven't taken it apart to check).

An optical mouse is still a little expensive for me to experiment with. As in, my wife won't let me :)

Re:logitech is blue... (1)

flippet (582344) | more than 11 years ago | (#4625822)

I was thinking the same thing about mine, but the plastic the LED shines through is red too, so I don't know how well it'd actually work...

Phil, just me

Re:logitech is blue... (1)

EvilBudMan (588716) | more than 11 years ago | (#4625762)

We have 3 of these at work. I wish they still made them. I would like to replace my old ball mouse at home of the same shape. Both are good for shooters and fast gun CAD.

Re:logitech is blue... (1)

tusixoh (561920) | more than 11 years ago | (#4625767)

that's because logitech is the king of all peripheral input devices. i just wish i could find a trackman like they used to make that isn't wireless. my buttons are getting are screwy because it's so old.

Re:logitech is blue... (2)

Verteiron (224042) | more than 11 years ago | (#4625799)

My IBM optical has that as well; the tracking LED is red, but the mousewheel glows a bright, even blue. I've never had a better mouse than this one.

No more red? (0, Offtopic)

nogoodmonkey (614350) | more than 11 years ago | (#4625671)

But I kind of liked red. It wasn't my favorite color, but it was one of the better ones. :-(

I wish it hadn't died.

Fix for glass tabletops... (5, Funny)

MyHair (589485) | more than 11 years ago | (#4625674)

although, the glass tops on tables does make using optical mice a pain there.

Rub some sandpaper over the part of the glass where the mouse will be. Problem solved!

Re:Fix for glass tabletops... (1)

Ponty (15710) | more than 11 years ago | (#4625693)

Not for people who don't like their glass all gritted up =)

Re:Fix for glass tabletops... (0)

Anonymous Coward | more than 11 years ago | (#4625862)

Why do you think he's suggesting that you scuff your own glass. You want to scuff the glass in the waiting rooms of the clients you call on when you are on the road!

Re:Fix for glass tabletops... (1)

hands (173986) | more than 11 years ago | (#4625778)

What about taping a cool photo to the bottom of the table, under where you use the mouse?

Re:Fix for glass tabletops... (5, Funny)

FuzzyDaddy (584528) | more than 11 years ago | (#4625855)

Or maybe if you had some sort of special pad that went underneath your mouse...

Oh, wait. Nevermind.

Re:Fix for glass tabletops... (1)

Lochin Rabbar (577821) | more than 11 years ago | (#4625894)

Cool photo under the glass doesn't work and if the photo is glossy the chances are it won't be too useful on top of the glass either. I settled for just using a bit paper which doubles as a scratch pad. I still like optical mice though, I always hated having to degunge the old ball and roller mice.

Now if only (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4625677)

Debian would support USB mice like all the other distros, then ill be able to stop using that usb-to-ps2 converter!

Re:Now if only (0, Offtopic)

mark_lybarger (199098) | more than 11 years ago | (#4625765)

maybe once they find out that there is a 2.4 series kernel, it'll be a lot easier for them. i won't tell if you don't.

Resolution (5, Interesting)

DrLudicrous (607375) | more than 11 years ago | (#4625680)

I wonder if the resolution on these mice is at all wavelength dependent. If it were, than a blue LED would be superior to a red LED, since blue is at about 400nm and red is closer to 700nm.

I do have to say that a blue LED mouse looks about 10X cooler than a red one. But it looks like this type of project will only interest serious modders who have some cash to spend.

Re:Resolution (2, Interesting)

Anonymous Coward | more than 11 years ago | (#4625745)

Ohotodetectors are primarily limited by the bandgap of their material. The bandgap of a Si or even a GaAs detector should be able to handle most optical wavelengths. Due to price limitations, I'm fairly certain that mouse manufacturers would choose to use a Si detector. They choose a bright red LED because that's cheaper than anything else out there too. GaInN blue leds are a little pricey, even in volume manufacturing.

As long as you don't use an infrared or longer wavelength, you should be ok. Si is transparent to IR.

Re:Resolution (0)

Anonymous Coward | more than 11 years ago | (#4625781)

I forgot to mention, the detector is intensity dependent, so make sure you get a "high brightness" LED. This will ensure that the detector can reach threshold and provide the necessary signals to your computer.

Re:Resolution (4, Funny)

lirkbald (119477) | more than 11 years ago | (#4625801)

If you can move your mouse to a precision of 700nm, I'm very impressed :-)

Re:Resolution (1)

tulse (620024) | more than 11 years ago | (#4625836)

The gain in resolution you'd make (if the beam was being highly focused, which i doubt) would be sub-micron. I don't know about you, but my hands are pretty shaky. The improvement would make no noticeable difference Si photodiodes are good up until about 1000nm which is defintely IR.

Re:NOT Resolution, Sensitivity. (1)

Grog6 (85859) | more than 11 years ago | (#4625847)

The only problem is that the camera that is looking at the light coming back from the desktop is likely Si, (due to cost) which in most configurations has a sensitivity peak about 700-800nm. Blue LED's have a shorter wavelength. about 470nm for the ones I have, and Si photosensors have a very low response to light of this wavelength. (about 10:1 lower) This is likely to cause problems in the long run.

But, Hey, if it works, it's definately cooler with blue than red.

Re:Resolution (1)

ch-chuck (9622) | more than 11 years ago | (#4625881)

only when your monitor is cranked up to 1,024,768,112 pixels per inch.

damn (-1, Flamebait)

Anonymous Coward | more than 11 years ago | (#4625681)

you geek losers have too much time on your hands. Or is that taco's semen on your hands?

Black light (4, Interesting)

hero (25043) | more than 11 years ago | (#4625682)

How about black light on a white mouse pad? That would be pretty nifty.


Blue? Blue's not cool! (1, Redundant)

Matey-O (518004) | more than 11 years ago | (#4625683)

Now, a _blacklight_ led, THAT'D be cool! (Where's my disco ball and old skool rollerskates?)

Optical Mouse on Glass Table? (1)

CanisMajor (551555) | more than 11 years ago | (#4625688)

I used to tease cats with red laser pointers. Think of how they'd react to an optical mouse on a glass table...

Re:Optical Mouse on Glass Table? (0)

Anonymous Coward | more than 11 years ago | (#4625900)

I used to tease your mom's pussy with my cock.

Glass Table Top? (0)

Anonymous Coward | more than 11 years ago | (#4625689)

Do you live in the 80's? Does Don Johnson drive a Ferrari to your office? Glass Table Top!?!? Get some sense of function and style.

Blue is the new Red! (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4625692)

IT'S WAR!! []

Not surprising (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4625826)

Not surprising.

Since the 9/11 it has been painfully obvious that the GWB/Cheney/Ashcroft triumvirate is hellbent on following goals:

1) Securing the vast oil fields in Iraq for US use.
2) Waging war on freethinking, science and liberalism [] .
3) To whip up a "conflict of civilizations" [] that will feed the military-industrial-entertainment complex for the years to come -- just like the Cold War did before.

WTF? (0, Offtopic)

RobertB-DC (622190) | more than 11 years ago | (#4625867)

Ok, I guess I'm a newbie (or should I say n00b, see .sig), but do people just hang around Slashdot with no purpose other than to post random political thoughts? I mean come on, isn't there someplace else you can go? Even the Where's George? [] "Dude!" forum would reach more people than a "Score: -1" on Slashdot.

Of course, I'm taking a chance on my *own* karma... will this message get moderated -1 Offtopic, or -1 Flamebait?

Re:Not surprising (0)

Anonymous Coward | more than 11 years ago | (#4625890)

conflict of civilizations"

Civilisations plural? the west versus...what? Whats the other civilisation? The ones who juggle their time between slagging off the west, to sneak in?

and the reason to do this is????? (1)

rimcrazy (146022) | more than 11 years ago | (#4625696)

No, I think you should drill out the case, put a clear top on it and shove 400' of Home Depot light sticks in there.....I mean how else could I possibly use it?

Red/White/Blue... (5, Funny)

monadicIO (602882) | more than 11 years ago | (#4625699)

Cool! I myself wanted to write a long FAQ about how to do an analogous thing for traditional mice. i.e. how to use a whiteboard marker to change the ball to match your decor.....but got bogged down by technical details...perhaps someone can help me...

Why? (-1, Troll)

pigpen_ (56028) | more than 11 years ago | (#4625702)

First, this is a stupid mod since you can't really see the LED. Second, why is this on slashdot? If I wanted stupid mods I'd read about them on stupid mod websites. And third, does anyone proof the stories before posting them? The blurb doesn't make any sense.

Re:Why? (1)

Unkle (586324) | more than 11 years ago | (#4625877)

I can't see the actual LED on my optical mouse (a basic Logitech), but the light does glow through the case, which is a translucent plastic. And it glows brighter while it's being used, goes dim when not in use (powersaving feature, I'm sure). However, I aggree that this isn't exactly news, especially since I saw this mod on a mod site (can't remember which one) nearly a year ago, and I think at that time it was already an old article.

Major Headline! (2, Insightful)

rjstanford (69735) | more than 11 years ago | (#4625703)

Next on Slashdot, a complete HOWTO on adding those leftover red LEDs to your car's window washer nozzles.

I mean, really. I know that we've been getting sillier lately, but this? Not exactly News for Nerds. Stuff that matters. Is it?

In unrelated news, a Japanese study [] shows another link between computer use and health problems. But hey, that sort of thing just isn't as k3wl....

Re:Major Headline! (2)

Ageless (10680) | more than 11 years ago | (#4625788)

Here's what you do...
Scroll down.

Now wasn't that easy?

Re:Major Headline! (2)

IIRCAFAIKIANAL (572786) | more than 11 years ago | (#4625791)

From the article (in parent):
The researchers urged more studies of the link between computer use and physical and mental symptoms.

I always like to see this sort of thing. It helps reassure me that the group performing the study is trying to be responsible and not just scare people.

(Personally, I'm more concerned that this story is probably a dupe than it being "unimportant to the readers of Slashdot", but anyway...)

Don't actually do this! (-1, Troll)

PhysicsGenius (565228) | more than 11 years ago | (#4625705)

Red light has the shortest wavelength possible, which is why it is used for mice. A small movement will then correspond to a large number of wavelengths, making tracking the mouse's position easier. If you switch to blue, the longest possible wavelength, your mouse will be essentially useless.

Re:Don't actually do this! (5, Informative)

EmagGeek (574360) | more than 11 years ago | (#4625763)

Red has a longer wavelength than blue.

Blue has a shorter wavelength than red.

The reason red LEDs are used is because they are the cheapest, as longer wavelength bandgap devices are easier to make.

The exception to this logic is infrared, since LEDs are typically used for visual indication. Infrared LEDs are useless for this purpose so manufacturers don't make nearly as many of them...

Which color works best? (3, Interesting)

Blimey85 (609949) | more than 11 years ago | (#4625708)

Back when optical mice were still on the drawing board, was any testing done to determine which color offered the best performance or was red simply chosen because the creator(s) thought it looked cool?

Personally I would rather have blue to match the blue case on my computer but the mouse that I have isn't all that responsive as it is and if it gets any worse, it wouldn't be usable.

Maybe one of the mod sites could do a test to see which colors offer the best performance and which colors should be avoided.

Re:Which color works best? (2, Informative)

GigsVT (208848) | more than 11 years ago | (#4625743)

Red LEDs are the cheapest per mcd of brightness. That's it. Highly technical, I know.

Re:Which color works best? (2)

ivan256 (17499) | more than 11 years ago | (#4625757)

I'm guessing that red LEDs being the cheapest might have had something to do with the decision.

Re:Which color works best? (2, Informative)

cronot (530669) | more than 11 years ago | (#4625820)

Excerpt from the article:

The reason for this is because the red light increases the contrast of the surface it is lighting up. The tiny camera used to take pictures in the mouse is able to see changes in the surface better, offering excellent responsiveness.

So, I guess the red color wasn't choosen for nothing... :-P Indeed, the article says that the mod will only work fine if you use high-intensity blue LED's.

Re:Which color works best? (1)

Blimey85 (609949) | more than 11 years ago | (#4625884)

What aroused my curiosity is that I know the military switched from using infrared technology to infragreen for night vision because it worked much better. I don't know the specifics on why it worked better. Maybe a green led would work better than a red one if they both have the same brightness. I don't care much for green, and would deffinitely go with blue given a choice, but only if the performance is equal.

I have several itellimice that I can play around with. Maybe I'll have to drop by Radio Shack later and pick up some various colors and see which ones perform better. How best should I determine the results of each color? Just my own opinion of which responds better or is there some (easy) scientific way to test the performance of a mouse?

Get a mousepad (0, Troll)

alta (1263) | more than 11 years ago | (#4625718)

and quit whining about your glass tabletops.

Not so fine (5, Funny)

L. VeGas (580015) | more than 11 years ago | (#4625719)

I think I'm fine with what I've got - although, the glass tops on tables does make using optical mice a pain there.

I thought I was fine with what I had too, until I got a glass tabletop... and started working without pants. Now I just cry every time I look down.

Damn you /.! (4, Funny)

El Camino SS (264212) | more than 11 years ago | (#4625725)

Aw, MAN! And I was just getting caught up on all of my ridiculous case modding and converting my Geo Storm into a Geo Storm "Type R"... ...NOW I HAVE TO CHANGE THE COLOR OF MY OPTICAL MOUSE TO GET PROPS AT THE DAMN LAN PARTY.

(Like Heston) Damn you. DAMN YOU ALL TO HELL!

Re:Damn you /.! (1, Funny)

Anonymous Coward | more than 11 years ago | (#4625850)

That's a Geo Storm "Type R-GSX J-Type", buddy... don't forget the double-decker biplane wing of a spoiler, either. You'll need all that downforce to keep you from losing the back end around corners on that front-wheel-drive car.. You'll be the talk of the town at the local supermarket where all the other dropped-down sticker-tapers are stuck on the speed bumps..

Cool looking, But... (5, Interesting)

CaffeineAddict2001 (518485) | more than 11 years ago | (#4625726)

The problem is that this can seriously degrade performance.

What I want to know is: Would it be possible to come up with a mod design in which it switches between red and blue? (Red when it's moving, Blue when it's idle)

I noticed the light turns off when the mouse is Idle with my intellimouse, maybe this could be switched around a bit.

Re:Cool looking, But... (5, Funny)

monadicIO (602882) | more than 11 years ago | (#4625755)

Red when it's moving, Blue when it's idle)

..... and yellow if you should stop soon. Of course, you could just speed up insanely onto the next window before it turns red...

Re:Cool looking, But... (0)

Anonymous Coward | more than 11 years ago | (#4625854)

...but then a little cordless mouse with a flashing blue LED on the top would come out and your hand would be banned from mousing for 6 months.

Re:Cool looking, But... (1)

Apreche (239272) | more than 11 years ago | (#4625872)

I have the logitech cordless mouseman optical. It can with a badass wireless keyboard too. You've probably seen it around its got all those fancy buttons and a volume dial. It was worth every penny. Anyway the LED in the mouse is red, but if the mouse isn't moving the LED blinks rapidly rather than being a constant on. I assume this is to save batteries. What's even cooler is if you wait a while the light still blinks, but less rapidly. Because it's wireless I don't think I'm going to fudge with the LEDs because it might mess with my battery life. But I'm sure someone can hack something together that makes the LED change colors rather than blink rapidly.

As seen previously on slashdot! (2)

Kraegar (565221) | more than 11 years ago | (#4625728)

In this post [] about the lego cryogenic [] mouse mod.

Did you send back the FAQ on the Slashdot Effect? (0)

RobertB-DC (622190) | more than 11 years ago | (#4625731)

'Cause that's what happened to the poor sucker... slashdotted before there were even a dozen comments posted. Poor sucker.

What about the detector? (2, Insightful)

P-Nuts (592605) | more than 11 years ago | (#4625739)

I'd be worried that the detector might only be sensitive to longer, redder wavelengths. It would probably be worth checking on what component the mice use, and what its specifications are.

Now all we need... (1)

JohnnyBigodes (609498) | more than 11 years ago | (#4625740) a how-to on making a stroboscopic mouse-led. That combined with a dayglo-orange mouse pad and some black-lights would make for the coolest trance-party deejay-PC around!

Article: Desoldering LEDs (5, Informative)

MyHair (589485) | more than 11 years ago | (#4625742)

From the article: With the LED's now exposed, gently heat each side of the LED's carefully pulling on them until they are removed from the PCB. Take your time. This is actually the hardest part of the whole mod.

This shouldn't be the hardest part of the mod. Solder-removal braiding and suction solder removers are cheaply available and highly recommended. Once you remove the solder, removing the LEDs is much easier and safer. (No flying hot solder!)

Why? (1)

FIT_Entry1 (468985) | more than 11 years ago | (#4625746)

The question begs to be asked. why?

Re:Why? (1)

SparkyMartin (206236) | more than 11 years ago | (#4625898)

To make your mouse look as cool? as all those Fast and the Furious wannabe cars you see driving around weekend nights with that eerie blue glow coming from underneath the chassis.

re: "Red is Dead" (1)

soreno (563079) | more than 11 years ago | (#4625759)

You've just inspired me to do a cool CRT-mod. I will remove the ability to show red colors.
That will make my desktop look very elite. Almost as elite as your mouse.

Hrmm... (5, Funny)

vasqzr (619165) | more than 11 years ago | (#4625764)

How many Slashdot'ers does it take to change an LED?

Answer: The ISP hosting the site is about to find out....

I wouldn't suggest doing it... (5, Informative)

delus10n0 (524126) | more than 11 years ago | (#4625766)

I did this on an older style Microsoft Intellimouse, using a light blue LED from Radio Shack. And they're not kidding about losing responsiveness. I couldn't play Counter-Strike anymore or any other games which required me to move the mouse quickly. The mouse would just lose tracking and the cursor would freeze on the screen. I swapped the original red LED back in, and what do you know, it works fine again.

I don't recall the URL, but about a year ago someone did a comparison of about 10 different LED colors they tried in an optical mouse, and found that red is the best. (Duhh)

Re:I wouldn't suggest doing it... (4, Informative)

Glytch (4881) | more than 11 years ago | (#4625899)

Actually, if you'd read the article, they said that the mod would not lower responsiveness so long as you used a bright enough LED. Bright red LEDs just happen to be cheapest. That's why they're used most often in manufacturing.

Red is Dead (4, Interesting)

ajs (35943) | more than 11 years ago | (#4625794)

A great scene is a great film (and I presume a great play, but I was too young to see it at the time).

The line is, of course, from The Wiz [] , which starred Diana Ross (Dorothy) Michael Jackson (Scarecrow) and Nipsey Russell (Tinman). My favorite song was "You Can't Win", which was sung by MJ. It's basically the three laws of thermodymamics, turned into a song about pessimism.

The "Red is Dead" line comes from a scene were they first get to the Emerald City. Everyone's dancing around this huge city square that's all lit green. Everyone's actually wearing white, but because of the lighting it looks green. Then there's an announcement that green is no longer in and the new color is red. Lights change, everyone is in red, and the dance continues. A few minutes later, the announcement proclaims, "Red is Dead" and I think the color moves on to gold.

This film was made at the hight of the disco craze, and Diana Ross was very much a part of it. I was kind of suprised to see her poking such fun at the whirling fashion trends that came and went in weeks in the late 70s.

The latest trends (1)

porn*! (159683) | more than 11 years ago | (#4625798)

Somewhat interesting article [] about blue LEDs and the science that got us here.

I'm green with envy, all you blue optical hipsters ;)

I'm so tired about blues (1)

denisbergeron (197036) | more than 11 years ago | (#4625800)

Everything is blues,
all OsX icons are blues,
all KDE icons are blues,
all KDE themes are blues
half gnome icons are blues
half gnome themes are blues
the sky is blue.
the water is blue
my tv screen reflection is blue
my DVD screensaver is blue
Help me my eye are blues !!!

I'm very happy whit my mouse and the red led :-)

Re:I'm so tired about blues (0)

Anonymous Coward | more than 11 years ago | (#4625866)

Half gnome? My half gnome is a level 50 thief with brown hair and brown eyes.

Red is for mood. (5, Funny)

grub (11606) | more than 11 years ago | (#4625804)

The faint glow of a red light while looking at pr0n just seems natural.

Blue is the new Red (1)

computer_redneck (622060) | more than 11 years ago | (#4625830)

Blue is great it is the new Red

Neat mod... (2, Insightful)

vasqzr (619165) | more than 11 years ago | (#4625834)

I'm guessing red LED's are used in the first place because of the cost. I read somewhere that red LED's are pennies and blue LED's are like $2.00 USD each. I probably read that on the Internet so take it with a grain of salt.

I'm wondering how many more blue LED's we can take. I remember the first thing I seen with them was the Sony PlayStation 2. If you go in to Circuit City or Best Buy, it seems like EVERY stereo, DVD player, TV, laptop, etc has blue LED's! I'm sure consumers like them, but I can see this fad passing soon.

If anyone opens up an old optical mouse, the kind where you need a special mouse pad, make sure you don't remove the infared LED and replace it with a blue one :-)

Glass tabletop fix (2, Funny)

LokiFoo (22476) | more than 11 years ago | (#4625843)

although, the glass tops on tables does make using optical mice a pain there.

Tape a mouse pad under the glass top.

Re:Glass tabletop fix (-1, Troll)

Anonymous Coward | more than 11 years ago | (#4625873)

That is a sooo very typical White Trash solution. Good god, howtacky can you be? Hope you were just kiddin, otherwise I pity you and the trailer park from where you hail.


Remember the /. rules.. (2)

grub (11606) | more than 11 years ago | (#4625851)

.. when you spill solder all over your MS mouse circuit board and ruin it you have to:

a) Call Bill Gates a poopy-head
b) Tell everyone "if MS included a schematic, this wouldn't have happened."
c) Repeat.

Yes I'm joking silly. :P

such a shame the author has can't type English (0, Flamebait)

jaymz666 (34050) | more than 11 years ago | (#4625868)

OMG, this passes as a /. story? With all the spelling and grammatical errors included!

How many LEDs do we need? (-1)

Anonymous Coward | more than 11 years ago | (#4625870)

Now lets see.

8 leds on my lap top
4 green, 4 yellow
2 leds on my two mice, both red
7 on my monitor all green
3 on my ms natural keyboard, green
6 on my cable modem
4 green 2 yellow
6 on my cable router
5 yellow, one green
five leds in my case
2 on the cd roms, one on the floppy and a busy and power switch
3 green two yellow
and finally two red and one green on my surge protector

So thats
41 total,
4 red
13 yellow
25 green

I dont want anymore! No matter what colour, just get rid of them all!

The reason they use red... (5, Insightful)

GoRK (10018) | more than 11 years ago | (#4625876)

Yes, red LED's are cheaper, but there is another reason, too.. They also want to use the cheapest CCD available. That's going to be a monochrome CCD that's sensitive to larger wavelengths. A red LED is going to work better on that.

With that in mind, an Infrared LED would probably work great with optical mice and their cheap CCD's.. maybe even better than red. You might have to remove an IR filter from in front of the CCD, and be wary of using them in a room with flourescent lighting, but it'd be good to try. How cool is an optical mouse with apparently NO light?!?!

If you want the "cool" blue look for whatever twisted ass reason, just use a blue LED and an IR LED in paralell. You might have to play with different led's/led voltages to get the right balance between a responsive mouse and the cool blue glow your riceboy heart desires, but again, it should work.


Cheap mouse to experiment on... (1)

Wiseazz (267052) | more than 11 years ago | (#4625885)

At compgeeks []

red LEDs and mice (1)

waldo2020 (592242) | more than 11 years ago | (#4625887)

Do you think that perhaps there is a reason that red works best ??? AFAIK opitcal mice work by imaging tiny features on the mouse surface onto 2d cmos ccd sensor. That means that the surface must be illuminated - so if the lens or sensor has a filter centered on the red LED spectrum, them any other color will work poorly at the filter dropoff.
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