What does a computer mouse see?

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  • čas přidán 12. 06. 2024
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Komentáře • 3,8K

  • @stiky5972
    @stiky5972 Před 3 lety +2617

    "What does it see?"
    **minecraft texture pack**

  • @madezra64
    @madezra64 Před 3 lety +5355

    "let's take a look with a Gameboy camera" - weird flex but okay.

    • @3dlabs99
      @3dlabs99 Před 3 lety +266

      The nerd factor is high with that line

    • @herzglass
      @herzglass Před 3 lety +161

      My reaction was like: Sure that's the only camera he got sensitive to IR, alright.

    • @Fortuna1
      @Fortuna1 Před 3 lety +12

      When watch with the GB camera, both looks, maybe is so fast how for read in a screen
      Is interesting

    • @herzglass
      @herzglass Před 3 lety +18

      @@Fazer_600 I was being ironic. My dad showed this to me already in the 90s or very early 2000s when he already had some digital camera prototypes from epson.

    • @marcelo55869
      @marcelo55869 Před 3 lety +4

      4:28 That's a Humble brag!

  • @raz0229
    @raz0229 Před 3 lety +3724

    _"What does a computer mouse see?"_
    Mouse: _I've seen horrible things_

    • @heavenlydusk
      @heavenlydusk Před 3 lety +93

      It has seen things no man shall see.

    • @catalinbadalan4463
      @catalinbadalan4463 Před 3 lety +57

      "I've... seen things you people wouldn't believe" (a Mouse, probably...)

    • @randomgecko4637
      @randomgecko4637 Před 3 lety +11

      I misread the 8 in 148 for a B lol.

    • @yash1152
      @yash1152 Před 3 lety +7

      @@randomgecko4637 where? timestamp? and what does that mean??

    • @randomgecko4637
      @randomgecko4637 Před 3 lety +30

      @@yash1152 Back when this comment had 148 likes, I thought the 8 was a B and saw it as 14B likes.

  • @meuthic8886
    @meuthic8886 Před 3 lety +2961

    Yo, massive props to the camera man he had to be stuffed into a mouse.

    • @KazunaiOwO
      @KazunaiOwO Před 3 lety +114

      Ikr how the fuck did they do it?

    • @KazunaiOwO
      @KazunaiOwO Před 3 lety +43

      ccc310 Wtf bro thats insane!

    • @Door01
      @Door01 Před 3 lety +45

      Not exactly a feat... In all the movies I've seen the cameraman *and* the camera are invisible.

    • @pineapplejuice1109
      @pineapplejuice1109 Před 3 lety +6

      I love you

    • @JukoYT
      @JukoYT Před 3 lety +75

      Not a single woooosh? I am surprised

  • @amouse9739
    @amouse9739 Před 3 lety +1303

    We mostly see the mouse pad and our owner's hands. It's kinda boring most of the time.

    • @ovalteen4404
      @ovalteen4404 Před 3 lety +101

      Considering that you're focused to a distance of only a few millimeters, I'm surprised you'd see the owner's hands and not just some smudge.

    • @coolguy-xd1bg
      @coolguy-xd1bg Před 3 lety +57

      @@ovalteen4404 They see *everything*.

    • @ChaseMC215
      @ChaseMC215 Před 3 lety +35

      What about your distand reletive, the Wireless Mice?

    • @WiiUniverse
      @WiiUniverse Před 3 lety +16

      Username checks out

    • @amouse9739
      @amouse9739 Před 3 lety +61

      @@ChaseMC215Oh, him? He gets more freedom, he also dies from time to time. But over time, you could be good friends with him with enough time and paitience.

  • @CheetahNotHacker
    @CheetahNotHacker Před 3 lety +3502

    Me: playing Minecraft.
    My computer mouse: EVERYTHING IS COBBLESTONE.

    • @deathdeathrevolution3499
      @deathdeathrevolution3499 Před 3 lety +39

      apparently im not the only one playing minecraft and watching this

    • @dogerish
      @dogerish Před 3 lety +87

      Wait, it's all cobblestone?
      Always has been.

    • @zapdust2928
      @zapdust2928 Před 3 lety +5

      That's what i was thinking haha

    • @oh-ox9sj
      @oh-ox9sj Před 3 lety +7

      Death Death Revolution huh yt recommended and minecraft is the most popular game in existence

    • @g4bri3l.
      @g4bri3l. Před 3 lety +1

      @@deathdeathrevolution3499 Of course not

  • @soup6482
    @soup6482 Před 3 lety +137

    “What does a computer mouse see?”
    me looking at the thumbnail: Minecraft gravel?

    • @dedinside6085
      @dedinside6085 Před 3 lety +2

      Cobblestone.... but ok.

    • @soup6482
      @soup6482 Před 3 lety +4

      @@dedinside6085 no way, it totally looks like gravel

    • @dedinside6085
      @dedinside6085 Před 3 lety +1

      @@soup6482 i see it now

    • @rajeshwari6543
      @rajeshwari6543 Před 2 lety +2

      Same

    • @Corn0nTheCobb
      @Corn0nTheCobb Před 2 lety +1

      @🇨🇦 TheRealLoganYT 🇨🇦 it does look similar to it. And you can't "woosh" someone on their own joke.

  • @NovemberXXVII
    @NovemberXXVII Před 3 lety +130

    See this is why I prefer trackballs: they aren't watching me.

  • @EmilySucksAtGaming
    @EmilySucksAtGaming Před 3 lety +1421

    "let's take a look with a Gameboy camera" not the tool I'd use to check for infrared light but I guess it works

    • @EVRLYNMedia
      @EVRLYNMedia Před 3 lety +12

      exactly lmaooo

    • @Teukka72
      @Teukka72 Před 3 lety +28

      Depending on cellphone camera quality, you can see infrared on them too. Another thing to try would be a cheapo webcam.

    • @TechnologistAtWork
      @TechnologistAtWork Před 3 lety +34

      Any smart phone camera would do the trick

    • @krissjacobsen9434
      @krissjacobsen9434 Před 3 lety +33

      @@TechnologistAtWork Not iPhone for instance. They have an infrared filter that filters out the infrared light. But my Samsung S10e can see infrared.

    • @the_kombinator
      @the_kombinator Před 3 lety +25

      All of my smartphones detect it. I use them to check to see if remotes work in classrooms at work without needing to remove the batteries and check them.

  • @lily_anatia
    @lily_anatia Před 3 lety +775

    I remember when I was in high school, the rollers in the mice couldn't be cleaned because some school administrator had decided it would be a good idea to superglue all the ball covers "to keep people from stealing the balls". so people ended up throwing the entire mouse in the trash whenever the rollers would get too dirty, and the school would just buy a new mouse.

    • @williefleete
      @williefleete Před 3 lety +51

      I went to a school like that. the covers were super-glued.

    • @encycl07pedia-
      @encycl07pedia- Před 3 lety +63

      What's stupid is that's actually a thing. I remember finding a few mice without the balls inside at school. Not many, but some morons actually stole them. Of course by that time optical mice were becoming popular and cheap...

    • @duotronicnone4572
      @duotronicnone4572 Před 3 lety +14

      @@AnonymousGentooman Well, they always had more of someone else's money.

    • @AndrewAMartin
      @AndrewAMartin Před 3 lety +22

      @@AnonymousGentooman You'd think that, but probably not -- unless you're getting a volume deal on the replacement balls, it was probably faster and cheaper to just toss the mouse. And if you were really determined to clean your mouse, you could just unscrew the case...

    • @moadot720
      @moadot720 Před 3 lety +4

      “Stealing the balls”... ...BALLS... ...😂

  • @psychodog8117
    @psychodog8117 Před 3 lety +60

    Ah yes, my computer mouse sees a mixture of blocky gravel and blocky cobblestone.

  • @pedrosimoes8763
    @pedrosimoes8763 Před 3 lety +493

    This channel is like the museums should be. Less about staring at endless static and boring exhibitions and more about getting more knowledge and interest about how things were made in the past!

    • @squidslapper7328
      @squidslapper7328 Před 3 lety +23

      I went to the Ben Franklin museum and they explain everything perfectly and the history. I went to others that walk you through and describe the objects while history. Maybe you live in a place where museums suck. No hate btw. Hopefully your day is well.

    • @shiruvuiaanimak1485
      @shiruvuiaanimak1485 Před 3 lety +15

      @@squidslapper7328 most of them suck. It's usually about how well funded they are, but sometimes they still end up being very boring. I find it to be way more interesting to have a good guide person than an "interactive" wall if text on a tablet.

    • @deathcenter115
      @deathcenter115 Před 3 lety +2

      69 likes nice

    • @tweeleaf
      @tweeleaf Před 3 lety +2

      Ok boomer

    • @sheilaolfieway1885
      @sheilaolfieway1885 Před 3 lety +3

      exactly this is how history should be portrayed.

  • @SylphidUndine
    @SylphidUndine Před 3 lety +988

    ahh, ball mouse. when dying in quake meant you had a valid excuse to blame it on the mouse even if it wasn't true.

    • @override7486
      @override7486 Před 3 lety +52

      "Lag..."

    • @vincentlamb3436
      @vincentlamb3436 Před 3 lety +26

      I played quake with an old Logitech Trackman Marble. Sure you can come at me with your optical mouse but my trackball would never fail, especially trick shots with the rail-gun !

    • @pingaslord9726
      @pingaslord9726 Před 3 lety +7

      @@vincentlamb3436 I'm playing with a Logitech MX Ergo trackball. Everyone makes fun of me but it's a dream to use.

    • @CC-ke5np
      @CC-ke5np Před 3 lety +6

      Once my mouse broke down and my only spare was a graphic tablet. The mouse of the tablet didn't work great for Quake so I used the pen instead. I had a **** of a good time until there was a hard tap on my shoulder and when I turned around there were 8 angry guys standing behind me each with a spare mouse.

    • @vincentlamb3436
      @vincentlamb3436 Před 3 lety +3

      @@pingaslord9726 yes the apex of trackball evolution, im not laughing here!

  • @hblaub
    @hblaub Před 3 lety +264

    "I've seen things you people wouldn't believe" - 1st ever optical mouse

    • @kearygallagher
      @kearygallagher Před 3 lety +5

      is that a blade runner reference

    • @CubicApocalypse128
      @CubicApocalypse128 Před 3 lety +9

      "All those moments will be lost in time, like tears in rain. Time to die." - Last ever optical mouse

    • @kearygallagher
      @kearygallagher Před 3 lety

      Cubic Apocalypse A man of culture

    • @kearygallagher
      @kearygallagher Před 3 lety +1

      fechaqui 95 damn I love that movie lol

  • @florianthesnow
    @florianthesnow Před 3 lety +25

    I am so grateful for optical mice! Never having to clean them, having them work on any surface, and so on are just such huge improvements!

    • @OMA2k
      @OMA2k Před 3 lety +2

      Any surface, except for a glass table. Ball mice were superior for that 😉

    • @link7417
      @link7417 Před 5 měsíci

      Not just glass but glossy surfaces in general is terrible for optical mice

  • @Z_kun11
    @Z_kun11 Před 3 lety +105

    *”what does a mouse see?”*
    A mouse cursor: Uhhh I’ve been seeing a anime pad and being flinged into the wall

    • @warrior6633
      @warrior6633 Před 3 lety +3

      Copied

    • @libee1881
      @libee1881 Před 2 lety +2

      @@warrior6633 everything on the internet is copied nerd

    • @warrior6633
      @warrior6633 Před 2 lety +3

      @@libee1881 that is not a proper argument

    • @libee1881
      @libee1881 Před 2 lety +1

      @@warrior6633 never tried to make an argument. I'm just stating a simple fact. You can never say or write anything that isn't copied.

    • @parvp4529
      @parvp4529 Před 2 lety +1

      @@libee1881 Lmao he stopped, you win

  • @JayMaverick
    @JayMaverick Před 3 lety +374

    I remember as a kid I was the only one who ever cleaned those mouse rollers. It's still incredible to me how people could use a mouse with all that gunk inside.

    • @kamX-rz4uy
      @kamX-rz4uy Před 3 lety +20

      So many times at work I'd be helping a coworker and their mouse would hardly move. Can't understand how they could work that way. I'd open it up and remove a ridiculous amount of gunk from the inside.

    • @frederickevans4113
      @frederickevans4113 Před 3 lety +7

      Been there, done that, got the tee-shirt. I've been in IT since the mid 1990s and I remember opto-mechanical mice and cleaning both the ball and the rollers inside. I also remember my employer bought a Sun Ultrasparc 4000 and that was the first time I ever saw an optical mouse and its special mouse pad. I was part of the team which migrated the company's software, data, and employee login credentials from the previous UNIX system to the new Ultrasparc 4000 system. Solaris for Sparc. Being in IT, not only did I clean the mouse ball and rollers for my own mouse, but for company staff too.

    • @Dennis_MK
      @Dennis_MK Před 3 lety +1

      You Can Remove it?It won't need to be replaced?

    • @yannisgk
      @yannisgk Před rokem

      @@Dennis_MK yes!no! ;)

  • @RandoView
    @RandoView Před 3 lety +2419

    It's a good day when the 8 bit guy uploads.

  • @worldofretrogameplay6963
    @worldofretrogameplay6963 Před 3 lety +104

    This channel should be on television. It reminds me of all the computer shows I used to watch in the 1980s.

    • @itszain6317
      @itszain6317 Před 3 lety +1

      1980s? Dang u must be old

    • @Darkpyscholy
      @Darkpyscholy Před 3 lety

      Thanks for 700 😘
      abb 710 kra do plzz😭❤
      Love you all 💞💕💝

    • @yosefmacgruber1920
      @yosefmacgruber1920 Před 2 lety

      Then TV turned to crap and we had to turn off the TV, because it messes with your mind. TVs became "smart" as the TV programming became more and more dumbed-down and misleading, even outright lying to us.

    • @yosefmacgruber1920
      @yosefmacgruber1920 Před 2 lety +2

      @@itszain6317
      Well thanks. I remember "the good old days" when you could watch cool computer TV shows on TV. Computers were the new cool thing. Now computers have largely stagnated during the last decade. What does a modern computer even do, that a decade-old computer can not do?

  • @anti3018
    @anti3018 Před 3 lety +160

    Thumbnail: What does a computer mouse see?
    My brain: Looks like the old Cobblestone texture from Minecraft

  • @Derpy1969
    @Derpy1969 Před 3 lety +332

    I don’t missing cleaning mouse balls. Or anyone’s balls.

    • @trinidad17
      @trinidad17 Před 3 lety +22

      People have nostalgia about the weirdest things. "Hey guys don't you miss mullets and having people pretend to play keytars on TV?!?!"

    • @tin2001
      @tin2001 Před 3 lety +5

      I worked in a school before optical mouses were common... We glued the mouse ball covers on so the balls wouldn't get stolen, so cleaning them required removing the cover.
      Fortunately it was one screw, and it really didn't take any longer than pulling the ball out.

    • @alexh.9550
      @alexh.9550 Před 3 lety

      😂😂😂

    • @idranoutof1d
      @idranoutof1d Před 3 lety

      Hmmm

    • @RayanfhoulaBR
      @RayanfhoulaBR Před 3 lety

      Something wrong is incorrect

  • @RegebroRepairs
    @RegebroRepairs Před 3 lety +167

    I figured out the solution for the gummed up mouse in the 90's: I had a table where the mouse ball would slide. So I taped a paper onto the desk as a makeshift mousepad. Turned out not only could I also use it as a note/scratchpad, it also kept the mouse clean! The gunk would end up on the paper and after a few months it was dirty and full of notes, so I switched it. I kept on doing that until optical mice took over.

    • @oliversakic5907
      @oliversakic5907 Před 3 lety +12

      I thought I was the only one doing that!! I guess I’m not alone :D

    • @countzero1136
      @countzero1136 Před 3 lety +11

      Optical mice don't like highly polished desks though, so paper mousepads still have their uses :)

    • @JohnDlugosz
      @JohnDlugosz Před 3 lety +4

      @@countzero1136 Yes, the newer "Laser mouse" overcame that issue. I used a regular old mousepad for a camera-based mouse that didn't like my wife's black granite desktop. Laser mice were already taking over, so seemed old tech that this decorator mouse (bamboo mouse body) used the older generation technology.

    • @leos3010
      @leos3010 Před 3 lety +3

      damn boy, i just cleared up the gunk.. manually.. every 2 weeks or so ..

    • @sessna
      @sessna Před 3 lety

      Big brain

  • @AaronHamm
    @AaronHamm Před 3 lety +22

    Scraping those rollers clean was sooooooo satisfying lol

  • @JonDaye07
    @JonDaye07 Před 3 lety +60

    Dude uses a gameboy camera instead of just a cellphone. He's showing off at this point.

    • @frederickevans4113
      @frederickevans4113 Před 3 lety +6

      If he has an iPhone, it probably won't show IR light. I've tried with friends' iPhones and it never worked. Looking at the very same TV remote or surveillance camera using my Android smartphone's camera always showed the IR light - the fruity phones I've tried never did. Assuming the TV remote had good batteries and was in good working order or the surveillance camera was in night mode.
      Ditto for elevator door light curtains. Where I live, elevators are required to have light curtains between the doors and typically, light in the IR spectrum is used. If an object breaks the light curtain between the elevator doors, the doors either remain open or, if they are in the process of closing - they stop and re-open. It is a safety requirement. Most elevator companies enable a feature called "nudging" whereby after a preset amount of time, even if the light curtain is broken, the doors will still attempt to close (albeit with reduced force, I think). This is to prevent someone from holding an elevator indefinitely while other people are waiting (on other floors).

    • @herrbonk3635
      @herrbonk3635 Před 3 lety

      Not having any "cellphone" (or any gameboy), I would simply use one of my old digital cameras for that type of task. Their sensors see infrared too, of course.

    • @OMA2k
      @OMA2k Před 3 lety

      @@frederickevans4113 What? You mean iPhone cameras don't pick IR light? Why is that? I thought ANY camera could do that. Even my ancient VHS-C camera from the early 90s could pick up IR lights from remotes.

    • @frederickevans4113
      @frederickevans4113 Před 3 lety +3

      @@OMA2k I think the fruit company put a filter on their cameras, either a physical one in the camera's lens, or a software one in the image processing.
      It might be a safety/modesty thing following the Sony camcorder IR nudes/semi-nudes from the late 1990s. Going purely from memory, please research it. Sony had introduced a feature called "Night Shot" into their line of camcorders 📹. It included IR illumination to help brighten night time video recording. According to the story, no one at Sony tried it in daylight. In direct sunlight, there was enough IR light (from the ☀) that the camera could see through a single layer of clothing. After months on the market and millions of these camcorders had shipped, Sony was inundated with requests to explain how to use the x-ray vision feature. When Sony tried to issue a recall, most individuals and many stores were less than enthusiastic to return the camcorders. The next version Sony released still had the "Night Shot" feature, but it was disabled in direct sunlight. If I remember the story correctly.
      I don't know for sure, but I suspect that the Sony camcorder story might have influenced the fruit company to filter their mobile device cameras.

  • @soyleo_san
    @soyleo_san Před 3 lety +218

    3:07 I always cleaned the ball... My whole life was a lie

    • @martinkuliza
      @martinkuliza Před 3 lety +14

      i used to always clean the ball.
      i used to always throw it in the air and catch it LOL
      it was cool
      but one day i realized there was a lot of shit on the rollers and sensors so i cleaned them and i realized what i needed to do

    • @plok7533
      @plok7533 Před 3 lety +5

      My dad is a technician, he would always pull the gunk out of the inside with a pocket knife so that's how I learned to clean it (not with a pocket knife, of course).

    • @OrionSoul
      @OrionSoul Před 3 lety

      I was 1 years old when those mouse came I think-

    • @kruleworld
      @kruleworld Před 3 lety +1

      @@plok7533 i used the plastic tool from Hobbytex, a fabric paint system. the tool was a nice blade that was soft enough to not damage the rollers, but sharp enough to get off all the gunk. I've cleaned mice that had so much gunk, it felt like off-roading...

    • @plok7533
      @plok7533 Před 3 lety

      @@kruleworld That sounds neat! I use digital mice these days, but I must admit the rollerball mice have a special charm about them. Even if they could get pretty yucky!

  • @RayMak
    @RayMak Před 3 lety +4038

    The Mouse is really an amazing invention

    • @theultimatedragonx
      @theultimatedragonx Před 3 lety +30

      Agreed.

    • @AlexMProductions
      @AlexMProductions Před 3 lety +162

      I swear I’ve seen you on a bunch of videos I have seen.....

    • @rimz3800
      @rimz3800 Před 3 lety +70

      You are everywhere in comments

    • @kierain9206
      @kierain9206 Před 3 lety +38

      Imagine using an analog stick to move a cursor

    • @dem4xed
      @dem4xed Před 3 lety +6

      I think Trackpads are even more amazing 😄

  • @DashsChannel
    @DashsChannel Před 3 lety +3

    03:34 mouse roller gunk is some of the nastiest stuff ever. Thanks for taking me back to 2003 and cleaning out the mouse for my Dell Dimension desktop I made my first programming and gaming experiments on, lol.

  • @FahadNazir007
    @FahadNazir007 Před 3 lety +10

    "What does a mouse see?"
    Mouse: I see pad, people.

  • @gabigeek22
    @gabigeek22 Před 3 lety +998

    Title : "what does a computer mouse see ?"
    Thumbnail : cobblestone

  • @DiamondDepthYT
    @DiamondDepthYT Před 3 lety +674

    So...what you're telling me is that MY CLASSMATES IN ZOOM WERE USING THEIR MOUSES FOR THEIR WEBCAMS?

  • @vzvulchev
    @vzvulchev Před 3 lety +6

    You could save the image after each tiny movement and then compose all the saved images into animation. Viewing the animation will be more logical to understand what the mouse "sees"

  • @SateLight
    @SateLight Před 3 lety +199

    Imagine having a ball inside your gaming mouse
    "And yes, it exist."

    • @JohnFortniteKennedy_
      @JohnFortniteKennedy_ Před 3 lety +25

      This post was made by modern pc gang

    • @gabrieldabriel
      @gabrieldabriel Před 3 lety +24

      Imagine needing a mouse pad
      This post was made by poor gang

    • @argonauts56au1kera6
      @argonauts56au1kera6 Před 3 lety +23

      @@gabrieldabriel Imagine using a separate mouse.
      This post was made by the Laptop touch-pad gang.

    • @daemonspudguy
      @daemonspudguy Před 3 lety +18

      @@argonauts56au1kera6 imagine using a touchpad
      THIS POST BROUGHT TO YOU BY THE IBM TRACKPOINT GANG.

    • @argonauts56au1kera6
      @argonauts56au1kera6 Před 3 lety +14

      @Jacob daemonspudguy Tice Imagine using a pointer or mouse.
      This post was made by the Keyboard only gang.

  • @kyleolson8977
    @kyleolson8977 Před 3 lety +237

    You missed the problems with the Mouse Systems pad optical mouse. I know you couldn't try it, but it does not act like an optomechanical mouse even if the way it measures movement is technically similar. The optomechanical mouse moves in the orientation of the mouse. The Mouse Systems pad optical mouse moves in the orientation of the pad, which meant that while it was very accurate, turning your hand any amount, as you do naturally, or having the pad at an incorrect orientation would cause the mouse to move in an unexpected direction. For most people, moving in the orientation of the mouse feels more natural. You could work with it when you had to like on a Sun workstation, but I had little patience. Using a ball mouse and dealing with the cleaning of the rollers was easier.

    • @Cythil
      @Cythil Před 3 lety +4

      Interesting. I never really had that issue when I used such a mouse back in the day. I am sure it happened but I think is similar to the lack of issue I have with the up and down direction of a USB. Just something a lot of people encounter that I never really did and the few times I had a slight issue it was so slight and took so little time to correct that I forgot about it.
      It may be that I also had a more advanced later version of the grid pad optical mouse. Something that may have used grid for the sensor but was more akin to a modern optical mouse. It was such a long time ago for me, so I am not sure.

    • @austinramsay
      @austinramsay Před 3 lety +3

      Weird I have a Sun 3/80 workstation I use quite a lot and I never even noticed. Gonna have to try and get it to mess up now lol

    • @random_n
      @random_n Před 3 lety +8

      A lesson re-learned years later with the Apple puck mouse - the mouse with no orientable shape. A courageous endeavor in pushing the boundaries of form over function!

    • @unvergebeneid
      @unvergebeneid Před 3 lety

      I wondered if this exact same issue would arise when he explained how it worked. Thanks for confirming that this is indeed what happened!

    • @markjstradling
      @markjstradling Před 3 lety +5

      However, you could really annoy the person next to you with a 90s Sun workstation by moving the mouse mat round 90 degrees. So now, up with left and left was up. Small pleasures but you got to find happiness where you can.

  • @nishitsoni3297
    @nishitsoni3297 Před 3 lety +138

    I googled this question just a few days back and didn't get a convincing answer... This is so perfectly timed!

    • @morganrussman
      @morganrussman Před 3 lety

      :D

    • @2mozz
      @2mozz Před 3 lety

      XD

    • @GoldSrc_
      @GoldSrc_ Před 3 lety +4

      What do you mean you didn't get a convincing answer?
      People have been hacking mouse sensors as really crappy cameras and explaining the same years ago lol.
      Here, this is from 10 years ago czcams.com/video/bci7Gi05BNc/video.html

    • @ProGamer1515
      @ProGamer1515 Před 3 lety +1

      @@GoldSrc_ People have search results 'tailored' to them by Google. What you see - even at the same time with the same search - is most likely entirely different than what they see.

    • @trinidad17
      @trinidad17 Před 3 lety +1

      Regarding reading mouse data, just go into anonymous mode and google "arduino mouse camera" and you find plenty of results along these lines, which work faster that the one presented here.
      @@ProGamer1515 I've seen Google not finding some obvious things, but not sure it tailors the results that much to user profiles, usually it's things it just doesn't index properly for anyone or jumbles it with many other unrelated things as to make the results useless. But that's not the case with this in my experience.

  • @eddienaing6821
    @eddienaing6821 Před 3 lety +14

    You are the first youtuber that i watched the video without skipping a second.

  • @supermario_bueno
    @supermario_bueno Před rokem +1

    This is one of the best channels on CZcams! Thank you so much for sharing with us your knowledge! Man, imagine having a class with The 8-Bit Guy!!

  • @nxone9903
    @nxone9903 Před 3 lety +58

    Ah, yes, that is the exact thing i should be watching in 2 am

  • @kbsanders
    @kbsanders Před 3 lety +117

    Ah, the memories of having to periodically clean the crud off the rollers when the mouse stopped working.

    • @Merescat
      @Merescat Před 3 lety +7

      And all the tech support calls for the same!

    • @fep_ptcp883
      @fep_ptcp883 Před 3 lety +1

      Ah, the old days of cleaning the rollers using a Bic pen cap...

    • @Norman_Fleming
      @Norman_Fleming Před 3 lety +2

      I still do. Using a logitech M-BA47 .

    • @kbsanders
      @kbsanders Před 3 lety +2

      I've heard of people collecting belly button lint and earwax. I wonder if somebody out there collects mouse ball crud. 🤣🤢

    • @BlackEpyon
      @BlackEpyon Před 3 lety +2

      Back then, it was always the rollers. Now, many of the balls have degraded to the point where the rubber has gone ever so slightly stiff. Just enough so that it doesn't quite grip the rollers properly, and you get tracking issues. I've found that the Microsoft Serial Mouse 2.0/2.1 are still fairly reliable.

  • @yusufdelikaya951
    @yusufdelikaya951 Před 3 lety +8

    4:30 You don't need a Gameboy camera for that. Phone cameras show infrared light as well. I tried it with the LED of my TV's remote controller.

    • @frederickevans4113
      @frederickevans4113 Před 3 lety +4

      You probably have an Android smartphone. All my friends' fruity smartphones I've tried that with have failed to see the IR light. I have a Samsung Galaxy S7 and it sees IR (as did the GS5 and GS2 I had before).
      If you have a smartphone capable of seeing IR, that is one way to check the batteries in your TV remote. Pressing buttons: good batteries = blinking light, bad batteries (or faulty remote) = nothing.

  • @hatdognialjur2070
    @hatdognialjur2070 Před 3 lety +19

    Title: "what does a mouse see"
    The video: *literally explains every part of a mouse*

  • @1BitFeverDreams
    @1BitFeverDreams Před 3 lety +218

    Wow, what a packed and super interesting episode. Last year, I ran into those opto-mechanical solution inside a Mac ADB Advanced Gravis MouseStick (I) and had to diagnose it before it started registering movement. I made a lengthy thread about it in the allaboutcircuits forum. Basically, the light wasn't picking enough light because of scratches in the plastic film on plastic film contact inside the wheel between LED and photoresistors. I had to up the voltage feeding the LEDs to make the whole sequence trigger. Most people owning these joystick have developed this problem over time so these 'duds' are unfortunately getting sold on eBay and most people don't realize it's an easy fix by turning a potentiometer for a bit.
    I went further down the rabbit hole this year by getting inspired by a custom thumbstick joystick getting interpreted by a very small Arduino which sent back the same kind of quadrature data, but digitally, to an old Macintosh serial port, so that it could replace the mouse in a Mac Plus, 512k, 128k or even Lisa. I mimicked the design and tried to improve on it while also making a gamepad case, 3d printed. Our designs and choices are documented in the hardware section of 68kmla forums.

    • @theaveragecactus
      @theaveragecactus Před 3 lety +2

      how.....
      Mu0n
      17 hours ago (edited)

    • @JustAPolishAmerican
      @JustAPolishAmerican Před 3 lety +5

      @@theaveragecactus He's probably supporting the 8-Bit Guy on Patreon. I mean, Technology Connections actually releases videos a day early to Patreon supporters.

    • @KOTYAR0
      @KOTYAR0 Před 3 lety +2

      Hmm, mate, since you are so enthusiastic about this?
      Why is a hole on bottom of a mouse, - is shaped like a key hole?

    • @1BitFeverDreams
      @1BitFeverDreams Před 3 lety +3

      Yup, I support the patreon and the videos are up the day before

  • @KPbICMAH
    @KPbICMAH Před 3 lety +45

    "there are only 224 pixels" - 225, dammit!

    • @mare65
      @mare65 Před 3 lety +7

      That would be the most cursed number as it's not divisible by 8.

    • @frankzeppelin
      @frankzeppelin Před 3 lety

      @@mare65 I was wondering why they did 15x15 instead of 16x16. Maybe a reserved or null value? Or maybe it was easier to have a zero column (and row) where everything was offset relative to it. I don't know anything about engineering but this is fascinating.

  • @fu1r4
    @fu1r4 Před 3 lety +2

    3:58 If i don't remember it wrong the direction of the movement was always how the mouse pad was placed and not how you hold the mouse. You could turn the mouse the other direction but the mouse pointer moved up even if the mouse cable was against you.

  • @anthonyverdin6743
    @anthonyverdin6743 Před 3 lety

    Awesome video, I always enjoy watching guys like you explain common everyday items.

  • @zipperman
    @zipperman Před 3 lety +97

    Looks like a 2009 first release minecraft cobblestone texture

  • @ironscatman
    @ironscatman Před 3 lety +208

    me: trying to sleep
    8-bit guy: Wanna learn about Mouse Mechanisms!?

    • @bwgti
      @bwgti Před 3 lety +6

      It was honestly worth the lost sleep.

    • @SJSharkMaster
      @SJSharkMaster Před 3 lety

      bwgti i can agree on this

    • @vibaj16
      @vibaj16 Před 3 lety +1

      It’s 6:28 in the morning and I’m going to sleep now...

    • @furret122
      @furret122 Před 3 lety

      @@vibaj16 12 am here

  • @ksmolsen
    @ksmolsen Před 3 lety +4

    Cleaning the wheels on an old mouse was always so satisfying.

  • @KubyAmel
    @KubyAmel Před 3 lety +52

    Fun fact: the mouse is actually a camera used by FBI to let them see what you are doing.

    • @WiseWik
      @WiseWik Před 3 lety +6

      I know it's meant to be a joke but with tech getting advanced, I wouldn't be surprised if it turns out true in the near future

    • @MisterNuke
      @MisterNuke Před 3 lety +4

      So they can see deep fried minecraft? Or my table?

    • @KubyAmel
      @KubyAmel Před 3 lety +2

      @@MisterNuke they can probably see your crafting table but idk about the irl table

    • @jasfhermelendres4243
      @jasfhermelendres4243 Před 3 lety +3

      *FBI:* _wow! nice mousepad._

    • @MisterNuke
      @MisterNuke Před 3 lety

      @@jasfhermelendres4243 lol

  • @SwitchAndLever
    @SwitchAndLever Před 3 lety +116

    Pretty neat that you wrote your own program to poll the sensor, though there are already people who have done this. There's even a program called mousecam which lets you more or less "scan" with the mouse, so you can read larger areas by moving around the mouse.

    • @ramsesvelasco
      @ramsesvelasco Před 3 lety +21

      Switch & Lever yep but I guess that takes away the fun of programming your own code on the Maximite

    • @martin_hansen
      @martin_hansen Před 3 lety

      Link?

    • @SwitchAndLever
      @SwitchAndLever Před 3 lety +4

      @@ramsesvelasco never said anything else.

    • @SwitchAndLever
      @SwitchAndLever Před 3 lety +4

      @@martin_hansen easily findable with Google, oftentimes CZcams comments with links just get flagged as spam.

    • @encycl07pedia-
      @encycl07pedia- Před 3 lety +5

      @@SwitchAndLever CZcams has gotten really close to NK with their censorship of videos and comments. It's really frustrating and sad.

  • @rachelnelson3765
    @rachelnelson3765 Před 3 lety +58

    man's answering the questions i didn't even know i was askin

  • @parampandya9312
    @parampandya9312 Před 3 lety +3

    I didn't came to know anything
    STILL ENJOYED

  • @HenryFlores4
    @HenryFlores4 Před 3 lety +2

    This video made me appreciate The Mouse even more! Great job as always! 👍🏼🖱️

  • @tmhchacham
    @tmhchacham Před 3 lety +10

    I love how calmly you just say you're going to write a program by looking at its datasheet.

  • @Shadow-xb2ce
    @Shadow-xb2ce Před 3 lety +35

    I figured out all by myself that it was the wheels getting dirty. A fingernail did wonders for scraping gunk off. SOoooo satisfying to remove that stuff.

    • @spacefightertzz
      @spacefightertzz Před 3 lety +2

      Ya me too and then I taught the other kids and teachers that trick. Because teachers would only have like 2 or 3 extra computer mouse in the class, and when a whole bunch of them had gummed up some of us would get stuck with gummed up ones. Now that I think about it, the teachers sent the computer mouse back to IT for maintenance/repairs because hardly anyone knew about cleaning the rollers...

    • @Shadow-xb2ce
      @Shadow-xb2ce Před 3 lety +1

      @@spacefightertzz The optical equivalent, getting a cat, dog, or arm hair stuck in front of the eye, and that's more frustrating to deal with, harder to get out, and lacks that sense of accomplishment. On the plus side, it isn't as sure to happen as gumming balls.

    • @JNCressey
      @JNCressey Před 3 lety +2

      How did people think it was the balls? You open it and take the ball out, the rollers have a ton of junk of them and the ball is spotless.

  • @EiffelVale
    @EiffelVale Před 3 lety

    I'm glad this video blew up in many people's recommendations.. have been a follower since forever!

  • @maraudo5454
    @maraudo5454 Před 3 lety

    Love the uploads!

  • @edge3220
    @edge3220 Před 3 lety +19

    To troll, for the picture of what the mouse sees you could've used an image of a piece of cheese.

  • @erich6860
    @erich6860 Před 3 lety +57

    I remember cleaning the rollers (not the ball) on my mouse in the 90's. Oh the things kids today miss out on :-)

    • @kmpoppe
      @kmpoppe Před 3 lety +2

      Same here. Same 'ol process every week or so ;-)

    • @the_kombinator
      @the_kombinator Před 3 lety +6

      I recently cleaned a few of mine up - definitely a flashback. Did you know, the balls in Microsoft mice, when the rubber coating is removed, fit into paintball guns near perfectly? :D

    • @erich6860
      @erich6860 Před 3 lety +3

      @@the_kombinator Oh my, thats 200 fps of danger there lol

    • @needfortweed8734
      @needfortweed8734 Před 3 lety +4

      yeah, I used my fingernails for that. In retrospect I should probably have used a better tool. Ah well. It worked.

    • @axelBr1
      @axelBr1 Před 3 lety +6

      The satisfaction of clearing the curd of the rollers.

  • @Austin_Boath
    @Austin_Boath Před 3 lety

    Your videos turn a topic which is very confusing to understand for most people and makes it simple to understand.
    Thank you David for making such interesting content, and explaining it really well.

  • @dr.fuzzduzz
    @dr.fuzzduzz Před 3 lety

    gbc camera was a genius way to find the infra red, kudos to you for thinking of that

  • @memaimu
    @memaimu Před 3 lety +23

    I always keep my Gameboy Camera handy for situations such as these.

  • @benjaminlum5894
    @benjaminlum5894 Před 3 lety +22

    7:58 "Now you'd think all I need to do now is read register B here, which is pixel grab."
    No, no I did not think that, let alone think at all when the data sheet was displayed..

    • @mikehunt3688
      @mikehunt3688 Před 3 lety +3

      Benjamin Lum its actually not too difficult to understand, its all laid out on the datasheet, for example take the register Motion at 0x02, so since its using a byte it has 8 bits, below the chart with the registers it lists in detail the bits and the fields and what they mean, like for Motion it says bit 7 (it starts at 0 so 7 is actually the 8th bit) is MOT which it says is motion since last reported which returns two values, 1 or 0, 1 meaning motion has occurred, 0 meaning no motion, with the rest of the bits reserved. What this tells us is that you can read at 0x02 and the 7th bit will tell you whether or not motion has occurred.
      If you’re interested in reading more for yourself you can find this particular datasheet at media.digikey.com/pdf/Data%20Sheets/Avago%20PDFs/ADNS-5030.pdf

  • @KryzysX
    @KryzysX Před 3 lety

    you're GENIUS i liked your INTRO X)

  • @TheUltimateNick
    @TheUltimateNick Před 3 lety +1

    This was a really interesting video!
    I didn't understand a lot of it, but it was still really awesome to see how mice work ^w^

  • @mattthe2nd865
    @mattthe2nd865 Před 3 lety +41

    Watching him cut out the microcontroller instead of desoldering it hurt me a little.

    • @scose
      @scose Před 3 lety +2

      Desoldering is a pain in the ass!

    • @gmirwin
      @gmirwin Před 3 lety +1

      Watching a good desoldering is a bit therapeutic, for some reason.

  • @soupp
    @soupp Před 3 lety +138

    "What does it see?"
    *deep fried minecraft*

  • @TheGandorX
    @TheGandorX Před 3 lety

    I have seen a prototype of a vacuum cleaner that had a mouse sensor built in to the head to sense the type of surface. That info was used to adjust the suction power. The power went up on a carpet floor and down on a hard surface (tile or wood floor).

  • @habdochkeineahnung
    @habdochkeineahnung Před 3 lety

    So cool. Hope you guys in texas are ok again. Hope to see more videos in the future! ;)

  • @zraphy4165
    @zraphy4165 Před 3 lety +432

    Everybody gangsta till the mouse starts moving on the Z axis. 😔😔😫😫😫👊👊😳😳

    • @boomrr07
      @boomrr07 Před 3 lety +43

      The emojis killed it for me

    • @zraphy4165
      @zraphy4165 Před 3 lety +34

      @@boomrr07 😫😫👊👊😳😳

    • @sequentiacyclica
      @sequentiacyclica Před 3 lety +30

      @@boomrr07 they were ironic and basically poking fun at stupid CZcams titiles

    • @jugodelicioso
      @jugodelicioso Před 3 lety +16

      @@boomrr07 😔😔😫😫😫👊👊😳😳 ok.

    • @AstralBelt
      @AstralBelt Před 3 lety +7

      @@boomrr07 banana sprite

  • @enchanted_games
    @enchanted_games Před 3 lety +135

    So what webcam do you use?
    Me: *MOUSE*

  • @robintst
    @robintst Před 3 lety +1

    Little bit of trivia for the 90s kids: The analog sticks on the Nintendo 64 controllers used optical encoders much in the same fashion as old ball mice meaning they were mostly digital as the encoders can only detect a set distance from the assumed center in so many exact increments. But by being able to detect so many small increments of movement, it essentially "emulated" true analog control as far as the end user was concerned. Probably the only thing that gives it away is the very subtle "ratcheting" feedback you can feel when rotating it, that's the plastic teeth on the encoder discs.

  • @djdublo
    @djdublo Před 3 lety

    Fascinating, not just the dive into how mice work but how you managed to read the data direct from the sensor.

  • @the_kombinator
    @the_kombinator Před 3 lety +41

    2:24 back in the day, we called these RPGs - rotary pulse generators.

    • @BloodAsp
      @BloodAsp Před 3 lety +6

      Thank you, I will now be using this. ...whenever the opportunity presents itself.

    • @andreasu.3546
      @andreasu.3546 Před 3 lety +7

      TSA officer: Any sharps or other illegal items in your luggage?
      Me: Only a couple RPGs, nothing to worry about...

    • @andreasu.3546
      @andreasu.3546 Před 3 lety +3

      @@Scwarzkop TSA officer rebooks you on a flight to Guantanamo.

    • @digiowl9599
      @digiowl9599 Před 3 lety +1

      And last time i poked around a cheap MS branded mouse, it was still used to drive the scroll wheel.

    • @HAWXLEADER
      @HAWXLEADER Před 3 lety +4

      Today we call these encoders...

  • @gustavgurke9665
    @gustavgurke9665 Před 3 lety +10

    That's how we know it's a documentary by David: He starts with explaining ______ really well and draws some diagrams and other useful graphics before starting to cut some wires, solder stuff and write a basic program just to demonstrate something simple.

  • @TWOOOOO2
    @TWOOOOO2 Před 3 lety +1

    Wow, The cameras banks used was mouse cameras, quite interesting

  • @xcoder1122
    @xcoder1122 Před 3 lety

    I also had a mouse with such a special pad for my XT PC, connected via serial port. At some point that pad was falling apart and I had no money to replace it. So what I did was simple: I printed a similar pattern as was on that pad using my 24 pin needle printer of that time on ordinary paper. Of course, I couldn't print as fine as the original pattern was but it was fine enough, the movement was just a bit slower. Finally I got a very thin, transparent piece of hard plastic as a cover and the replacement was done. While not good as the original, it kept that mouse alive and I could re-print it as often as needed. As you can see, my mouse was already a bit newer and did not work with two different kinds of light, it just required a pattern of tiny squares, circles, or octagons (I tried all three and all of them worked). When I got a new computer, I also went back to a mouse with a ball even though they got dirty, their movement was just smoother until the first real optical mice were available for affordable prices.

  • @smayds
    @smayds Před 3 lety +31

    I had a Mouse Systems Amiga mouse back in the 90s - absolutely brilliant at the time, so long as you kept the mouse perfectly straight! Angle it a bit and the pointer starts to do the Lambada.

    • @TheducksOrg
      @TheducksOrg Před 3 lety +2

      I admined a Sun box with one of them until 2012.. it was apparently in service until 2014

    • @Pentti_Hilkuri
      @Pentti_Hilkuri Před 3 lety

      I had a C64 with GEOS and a mouse.

  • @fen4554
    @fen4554 Před 3 lety +7

    Great video. I was the nerd in the computer lab that could do 'magic' things to mice by cleaning the rollers. Some of the kids used to get so worried when I'd pop the ball cover off and they'd see a flash of the circuit board.

  • @simonasfaw9450
    @simonasfaw9450 Před 3 lety

    Awesome channel, awesome content 👍

  • @sanjayreddy3295
    @sanjayreddy3295 Před 3 lety

    Sir your work is mind-blowing

  • @video99couk
    @video99couk Před 3 lety +25

    0:36 I used to have an Amstrad PC-1640, which had get another mouse connector variant.
    I remember the cold metal Sun mouse mats.

  • @CarthagoMike
    @CarthagoMike Před 3 lety +28

    Ah, perfect. An 8-bit upload just as I finished preparing dinner. I know what I'll be watching whilst dining!

  • @standardnerd9840
    @standardnerd9840 Před 3 lety +7

    Every time I catch myself feeling too smug about my OG nerd skills & knowledge, I come to your channel and get humbled. Thanks for your great videos and for documenting the beginnings of what we take for granted today!

  • @masonwithasmile5701
    @masonwithasmile5701 Před 3 lety +65

    Next video: “What does my microwave see?”

  • @vonSachsenbach
    @vonSachsenbach Před 3 lety +10

    There was an old project posted on Hackaday where someone managed to used one of those sensors kind of like a scanner. Obviously the resolution from the 18x18 CCD was very low but the result was pretty impressive for what it was. It definitely blew my mind at the time. Unfortunately the link is now dead.

  • @sanpol4399
    @sanpol4399 Před 3 lety

    You made possible to show what the mouse's camera sees. That was brilliant. 👏🏻👏🏻👏🏻👏🏻

  • @imbahnezz
    @imbahnezz Před 3 lety

    This is without any doubt the best channel on CZcams, under literally any aspect.

  • @LegendBegins
    @LegendBegins Před 3 lety +12

    Using the Gameboy Camera to see the infrared light was a stroke of brilliance.

    • @jokuemt
      @jokuemt Před 3 lety +1

      you can use any camera really

    • @Omar-em7rl
      @Omar-em7rl Před 3 lety

      @@jokuemt not really, lower quality cameras can detect infrared better, go try it with your TV remote.

  • @nextmx
    @nextmx Před 3 lety +17

    I've always wondered how these mice worked. Thank you!

  • @elwyndude
    @elwyndude Před 3 lety +4

    You get reminded of how old you are when you remember thinking nothing when taking out the mouseball to clean it.

  • @charis.s
    @charis.s Před 2 lety

    This has got to be the best intro i have seen. Wow!

  • @MDPToaster
    @MDPToaster Před 3 lety +61

    God I hope my mouse can’t see.

    • @mrkitty777
      @mrkitty777 Před 3 lety +4

      Think about the 🐹 hamsters too.

    • @TheRestartPoint
      @TheRestartPoint Před 3 lety +6

      Or smell or feel

    • @ChipGuy
      @ChipGuy Před 3 lety +4

      Don't worry. It can only "see" stuff less than 1cm away.

    • @D.G.M.
      @D.G.M. Před 3 lety +4

      As long as it only "sees" the table, I am fine with that.

    • @TorutheRedFox
      @TorutheRedFox Před 3 lety

      there's not much that a 15x15 mouse with a fixed lens that's focused on stuff that's about a centimetre away from it can see lol

  • @JoelElRican
    @JoelElRican Před 3 lety +5

    This is why I watch you, David. I learn so much about how things work and the evolution of things that I use everyday.

  • @krisraps
    @krisraps Před 3 lety

    I Always Wanted To Do This Project, Never Came Around To Actually Do It, THANKS FOR DOING IT !

  • @EarlOfMaladyCrescent
    @EarlOfMaladyCrescent Před 3 lety

    You are a very clever man, being able to hack in to the camera on that mouse! Pretty cool how you've got all this vintage gear as well. A lot of it must be hard to come by, (the stuff that still works anyway).

  • @wareya
    @wareya Před 3 lety +51

    Trivia: modern gaming mice still typically have independent MCU and sensor chips.

    • @lm4278
      @lm4278 Před 3 lety +13

      @@AnonymousGentooman That's what she said...
      Sorry. Had to do it.

    • @AkhyarMaulanaPangeranWeb
      @AkhyarMaulanaPangeranWeb Před 3 lety +1

      yes because they use more bigger camera

    • @wareya
      @wareya Před 3 lety +4

      @@AkhyarMaulanaPangeranWeb it's more about the processing they do being a lot more elaborate, they're not JUST cameras, they're also DSPs

    • @KuraIthys
      @KuraIthys Před 3 lety +2

      Kinda reminds me of the Wii's IR sensor.
      At first glance it seems like it tracks IR light sources - which of course, it does.
      But how it does that is basically that it's a 128x96 black and white camera with an IR filter, and a built in processing chip that takes the 4 brightest readings, interpolates the pixel intensity values to essentially determine the coordinates as though it was a 1024x768 image, and then send those coordinates + a 4 bit brightness value on to whatever hardware you connect it to...
      I guess optical mice are kind of doing a similar thing...

    • @acmenipponair
      @acmenipponair Před 3 lety +1

      @@AkhyarMaulanaPangeranWeb I would say, that the reason is latency: You can make a faster MCU when you seperate it from the sensor. And the faster the MCU can process the sensor data, the faster you can move your mouse cursor and therefore in games where the crosshair of your weapon looks too. Don't forget, when you have a 144 fps screen, your mouse must at least send the position data 144 times a second to the computer, so that you can move your mouse without lag.

  • @guyh3403
    @guyh3403 Před 3 lety +6

    4:41 Wow, I think you just fixed a broken pixel in my eye!

  • @poenze1
    @poenze1 Před 3 lety +2

    But how are you able to get real time movements if data transmission is that slow?

    • @ropewalkingelephant
      @ropewalkingelephant Před 3 lety +1

      I was really hoping that he might have been able to explain exactly this and the it ended!

  • @shaunclarke94
    @shaunclarke94 Před 3 lety

    I've always wondered if this was possible. That's awesome.
    Thanks too for explaining how a ball mouse registered direction. I'd always just seen a single opto coupler and wondered how it could tell direction.

  • @aivrytheshirtlesssinginwon7700

    Me seeing this video title in my notification: Uhh.........the mousepad