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"Red is Dead" Optical Mice LED Change

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.

44 of 490 comments (clear)

  1. logitech is blue... by b_pretender · · Score: 5, Interesting
    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.

  2. Fix for glass tabletops... by MyHair · · Score: 5, Funny

    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!

    1. Re:Fix for glass tabletops... by FuzzyDaddy · · Score: 5, Funny
      Or maybe if you had some sort of special pad that went underneath your mouse...

      Oh, wait. Nevermind.

      --
      It's not wasting time, I'm educating myself.
  3. Resolution by DrLudicrous · · Score: 5, Interesting
    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.

    1. Re:Resolution by lirkbald · · Score: 4, Funny

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

    2. Re:Resolution by Anonymous+Custard · · Score: 4, Insightful

      Let's see... 700nm would have to equal one pixel movement, right? That means that for a full 1280-pixel travel across the screen, he'd only have to move the mouse 0.896mm (I think).

      (Disclaimer: fuzzy math ahead)

      Who says the mouse hardware has to send a constant (not variable) motion:pixel signal? Lets assume it sends a 'move cursor' command once per millisecond. I (just now!) moved my mouse across my 1024 pixel screen, and it took about two inches (5 centimeters) of mouse movement, at default windows mouse settings. That's about 2.054 pixels per millimeter mouse movement. During each millisecond, a move of anywhere from 700nm-1cm could translate to a one pixel cursor movement, then 1.00000001cm - 2cm would be two pixels, etc. The sharpness would only come into play if someone managed to move it 701nm in less than one millisecond, it would still correspond to a one pixel movement, where as less accurate mice would not move the mouse at all.

      I don't think it matters whether your beam is 400nm or 700nm, unless it helps the laser track the mouse across non-optimal surfaces such as solid colors or glass. What may appear solid to a sensor at 700nm resolution could appear slightly patterned at 400nm, kind of like doubling magnification on a microscope allows you to find texture on surfaces which previously seemed flat.

  4. Black light by hero · · Score: 4, Interesting

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

    -hero.

  5. Red/White/Blue... by monadicIO · · Score: 5, Funny

    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...

    --

    The law of excluded middle : Either I'm foo or I'm foobar

  6. Not so fine by L.+VeGas · · Score: 5, Funny

    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.

  7. Damn you /.! by El+Camino+SS · · Score: 4, Funny


    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!

    1. Re:Damn you /.! by Anonymous Coward · · Score: 4, Funny

      Geo Storm "Type R"

      You too? I got an extra sticker if you need it.

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

      Well, since he has Reagan Disease (Alzheimers), shouldn't that be more like: Damn you. Dam holds water. Sandwich ape! Gun go boom! Hello pill lady. PILL LADY IS MADE OF APES!

    2. Re:Damn you /.! by nolife · · Score: 4, Funny

      I have made some mods to my computer..
      I changed my case led's to show 133 when I actually only have a 100, a racing stripe on my burner, swiped an "Intel inside" sticker from a disply at Walmart and I hooked the 2940UW external led connector to the green power AND the yellow turbo light on the case front. Eventually I'll fire up Winbench but I figure I'm good for at least 60 more FPS in Doom..

      --
      Bad boys rape our young girls but Violet gives willingly.
  8. Cool looking, But... by CaffeineAddict2001 · · Score: 5, Interesting

    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.

    1. Re:Cool looking, But... by monadicIO · · Score: 5, Funny
      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...

      --

      The law of excluded middle : Either I'm foo or I'm foobar

  9. Article: Desoldering LEDs by MyHair · · Score: 5, Informative

    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!)

  10. Re:Don't actually do this! by EmagGeek · · Score: 5, Informative
    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...

  11. Hrmm... by vasqzr · · Score: 5, Funny


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


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

  12. I wouldn't suggest doing it... by delus10n0 · · Score: 5, Informative

    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)

    --
    Not All Who Wander Are Lost
    1. Re:I wouldn't suggest doing it... by Glytch · · Score: 4, Informative

      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.

  13. Red is Dead by ajs · · Score: 4, Interesting


    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.

  14. Red is for mood. by grub · · Score: 5, Funny


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

    --
    Trolling is a art,
  15. Re:what about ultra-violet? by grub · · Score: 5, Funny


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

    --
    Trolling is a art,
  16. The reason they use red... by GoRK · · Score: 5, Insightful

    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.

    ~GoRK

    1. Re:The reason they use red... by BeBoxer · · Score: 4, Interesting

      Works great. I've had an IR LED one of my mouse for quite a while now. It's hooked up to my jukebox PC which is out in the den. I got tired of having the mouse randomly flashing from dim to bright and back whenever it thought that maybe something was moving underneath it. It liked to do it the most when I was trying to watch movies. Dropped in an IR LED, and it works great. No more flashing.

    2. Re:The reason they use red... by radish · · Score: 5, Funny

      How cool is an optical mouse with apparently NO light?!?!


      About as cool as a 20 year old Sun optical mouse ;)

      --

      ---- Den ene knappen er powerknapp, den andre er Bender voice knapp "Bite My Shiny Metal Ass"

    3. Re:The reason they use red... by jellomizer · · Score: 4, Funny

      Of course you need the cool mousepad with the mouse for the Old Sun Optical Mouse.
      I remembered when someone told me about the "New" Microsoft optical mouse. at the time I was working on a Sun Workstation in the computer lab, and he was talking some junk on how inovative MS is. So basicly I turned the mose over that I was working with and showed him that it didnt have a mouse ball. Then I told him that this particular mouse is about 6 years old. Luckaly that shut him up and I was able to get to work.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
  17. Re:what about ultra-violet? by Angry+White+Guy · · Score: 4, Funny

    Goes with the friction burns on their left palms.

    Oh well, Karma suicide for a good joke....

    --
    You think that I'm crazy, you should see this guy!
  18. Re:what about ultra-violet? by binaryDigit · · Score: 5, Funny

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

    Thereby ruining their sex lives.

  19. Re:Glass tabletop fix by LokiFoo · · Score: 5, Funny

    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.


    Of course I was kidding, but you just gave me an idea. I can put the red LED's in the eyes of the pink flamingos out in my front yard...

  20. Computer mods... by GnomeKing · · Score: 5, Funny

    Every time I see one of these articles, this one in particular, it reminds me of the blokes who spend thousands of pounds to put UV tubes under their cars

    However, the main difference I can see between the two is that when the car modders have finished, they drive around town and OCCASIONALLY some girl stops, thinks its cool, and gets in with them, while mouse modders can only use their accomplishment to click on "sign me up" for yet another porn site

  21. Logitech Mouse by Christopher_G_Lewis · · Score: 5, Informative

    Here's a link for the same mod with a Logitech Mouse.

    www.skybusiness.com/ntanner

    I've done this, and it works fine. Note that there are two Radio shack LED's that are blue, one that outputs 2600 MCD's at 4.5 volts, the other 300 at 6 volts. I used the brighter one, and have no skipping problems at all.

    Radio Shack

  22. Re:why?? by GT_Alias · · Score: 5, Insightful
    Cuz d00d....it's 1337!!

    Serously, why do you need to ask why? Present a geek with a gadget, and he will find some pointless way to modify it, just for the sake of modifying it.

    Me? I think it'd be cool as hell to have a blue LED light under my mouse.

  23. Blue LED? Nah!! by cerebralsugar · · Score: 5, Funny

    A blue LED doesn't help me get any work done. Sure, it may look cool and impress chicks, but even cooler would be an ALL KNOWING, ALL SEEING MOUSE, that wouldn't rely on me to push it around the mouse pad to get work done. It would do all the work for me because it would be that smart. And I would fall asleep during working hours.

    It would be pretty damn good at playing quake as well, much better than me.

    If I could find a mouse like that, well heck, then it could have a blue LED. Until then though, only red for it, until it gets smarter and starts doing some damn work for a change instead of just sitting there until I push it.

    --
    Easy guys, I put my pants on one leg at a time. The difference is after I put on my pants I make gold records!
  24. Mice are kinda like lightsabers for programmers by Xpilot · · Score: 5, Funny

    Sith (evil programmers) use the red ones. Blue, green and now purple are used by the good guys :)

    --
    "Backups are for wimps. Real men upload their data to an FTP site and have everyone else mirror it." -- Linus Torvalds
    1. Re:Mice are kinda like lightsabers for programmers by Jugalator · · Score: 5, Funny

      Sith (evil programmers) use the red ones. Blue, green and now purple are used by the good guys :)

      That would at least explain the reason for the LED's used by Microsoft mice. :)

      --
      Beware: In C++, your friends can see your privates!
  25. Re:why?? by Jugalator · · Score: 4, Insightful

    Still, MSI color their mother boards, including ports, etc in a purple hue. I'm pretty sure they'd get the material in that boring green color easier, but it's all about standing out of the crowd. Same reason to why you'd make your LED blue.

    --
    Beware: In C++, your friends can see your privates!
  26. In other words... by andyf · · Score: 5, Funny

    In other words, this article is: Slashdot - How to Change a Lightbulb!

    --

    Photos of bits of the past hiding in the present: afiler.com
  27. Re:why?? by nmg196 · · Score: 5, Funny

    Matters not, whether you can see it.
    Red, it is.
    Feel it, you can.
    Blue, it must become.

    The force is not strong with you... Much to learn you have.

  28. Blue is Cool - here's an article on why! by swordboy · · Score: 5, Interesting

    I do have to say that a blue LED mouse looks about 10X cooler than a red one.

    Here's Why

    After reading this article yesterday, I pondered changing the LED in my mouse. Has slashdot implmented some sort of psychic cookies or something?

    --

    Life is the leading cause of death in America.
  29. Re:Where to buy ultrabright LED's? by Anonymous Coward · · Score: 4, Informative

    Hello,
    Yes, the hosting company shut down the site temporarily. Crippled their server. Sorry guys...I tried to keep it up.

    About the LED's used in this mod...
    They are from superbrightleds.com (go figure huh?) hehe

    You need them that bright in order for them to work properly. Hope this helps!

  30. How can a site named "extrememhz.com"... by Call+Me+Black+Cloud · · Score: 4, Funny

    go down so fast? This site is shutdown temporarily due to the slashdot effect.

    I suppose "extreme" could refer to minimum.

  31. Re:Which color works best? by Idarubicin · · Score: 5, Informative
    Please back up your studies with links.

    Please stop being lazy and Google for it yourself. The original poster is quite correct. The human eye is most sensitive to green light. Going from red (632 nm) to green (532 nm) there is an approximately fourfold increase in sensitivity. That's why green laser pointers are starting to appear, despite their cost. Novelty value, certainly, but also because a laser pointer limited to a safe power is four times more visible in green than in red.

    My guess is that it is because green does not re-transmit as far in distance as red does. Red has a longer wavelength and so can travel further without absorption. You don't want your enemy to be able to see you as well, right?

    The eye can resolve finer variations in contrast and brightness in green than in red, as well--hence the use of green displays in night vision scopes. Incidentally, it doesn't matter at all what colour your night vision scopes' display is from the enemy's point of view. Night vision devices are almost always passive devices that collect existing light. As long as they are properly fitted, they aren't directing any radiation--red, green, visible, invisible--outward, so there's nothing to see.

    There was a study done about what would be better to use for star watching: green or red.

    For amateur astronomers, red LED flashlights are available. They are used because even a fairly bright red LED is perceived as relatively dim by the eye, so your eyes don't lose their dark adaptation every time you check your star charts.

    As an aside to anyone here who works with near-IR lasers...you know that a 200 mW diode laser at 670 nm (very red) looks no brighter than a 5 mW HeNe (red, 632 nm)--indeed, it looks quite a bit dimmer after all those burn spots start occluding your vision. Wavelength matters just as much as power when talking about perceived brightness.

    --
    ~Idarubicin
  32. Re:why?? by Jeremy+Erwin · · Score: 5, Funny

    Hah. That's nothing. I overclocked my mouse sensor to 10x. Of course, my palm is occasionally injured by the blades of the cooling fan, but I found the extra precision is useful for negotiating a bloody mousepad...

  33. Quack by shadowj · · Score: 4, Funny
    ducktape is also very good to fix your windshield cracks

    Or for repairing a broken duck.

    Personally, I prefer using DUCT tape for most applications, including removing warts. Doesn't work all that well for taping ducts, though.

    --

    --Larry

    Never attribute to malice that which is adequately explained by incompetence