How do Scroll Wheels Work? 🖱🛠🔬
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Have you ever scrolled a scroll wheel and wondered how it scrolls? Scroll is a rather strange word, isn't it? Anywho, in this video, we're going to explore the inside of a computer mouse and look at two different scroll wheels: an optical rotary encoder, and a magnetic rotational position sensor, and see how they are used to measure up and down rotational movement in a computer mouse scroll wheel. We're also going to explore the push button under the scroll wheel as well as the free-spinning vs. ratchet mode of the scroll wheel.
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Modeling, Animation & Editing: Mike Radjabov
Script: Teddy Tablante
Twitter: @teddytablante
Voice Over- Phil Lee
Additional Modeling: Prakash Kakadiya
Table of Contents:
00:00 - Intro
00:40 - Inside an Optical Scroll Wheel
02:46 - Direction of Rotation
03:37 - Inside a Magnetic Scroll Wheel
06:50 - Pushbuttons and Free Spinning Vs Ratchet Mode
09:08 - PCBWay
09:54 - Outro
Key Branches from this video are: Printed Circuit Boards, Lithium-Ion Batteries, Scroll Wheel, Bluetooth, Computer Mouse Image Sensor
Erratum:
Animation built using Blender 3.0 www.blender.org/
Internet References:
Logitech MX Master 3 Teardown offers an Intriguing look at its new scroll wheel
www.theverge.com/circuitbreak...
blog.bolt.io/logitech-mx-mast...
Fixing the Logitech MX Master Scroll Wheel
toemat.com/logitech-mx-master...
Details of the Image Sensor
www.pixart.com/
Inside the Omron D2FC-F-7N Microswitch
www.gonnalearn.com/inside-omr...
What is Mouse DPI? Does DPI Matter?
xahlee.info/kbd/mouse_dpi.html
Logitech Mouse Review. Logitech MX Master Wireless Mouse. Packaging and Equipment
playfmrussia.ru/en/programmy/...
Razer Viper Gaming Mouse Review: Lefties Bestie, Righties' Meh-stie
www.tomshardware.com/reviews/...
Wikipedia contributors. "Computer Mouse" , Interpolation Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, Visited October, 2021
Music Credits
#ComputerMouse #ScrollWheel #Mouse
@PCBWay 2 роки тому
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@smiletolife4353 2 роки тому
I, as a smurfy computer engineer, really appreciate, thank and wish you guys all the best on the great and impactful help that you give for such content creator and, for us, the viewers Hope you guys grow and bloom like never before, keep up the noble work!
@Dispelable 2 роки тому
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@fzigunov 2 роки тому
I'm happy you guys are sponsoring such a remarkable animator! Makes me even more happy to be your customer 🙂
@ZZ-vl5nd 2 роки тому
The level of details of these animations always amazes me!
@ashchbkv6965 2 роки тому
omg look at the screw at 6:53, it even has imperfections on its surface
@ghostali8351 2 роки тому
@Lon that's sick, I wonder how they do this
@Lon3wolf3 2 роки тому
@@ghostali8351 they said that they took apart these particular mice. Maybe they kind of 3D-scanned every part
@med_mn Рік тому
@@Lon3wolf3 where did they say this please?
@JaredOwen 2 роки тому
That was awesome - keep the videos coming!
@tonyadede2581 2 роки тому
gentleman your'e late with the helicopter project
@NewtYT Рік тому
2 3d kings
@liliu5250 Рік тому
did you get your idea to use computer animations to describe how things work from this person?
@opticalreticle 4 місяці тому
magic mouse is better
@ThatBenKraft 2 роки тому
I get so excited when these come out! As a current engineering student, I love seeing devices and breakdowns that actually apply to my everyday life and aren't just outdated technologies. Keep up the amazing work!
@kned7288 2 роки тому
Which engineering are you doing?
@ThatBenKraft 2 роки тому
@@kned7288 I’m in mechanical engineering
@kned7288 2 роки тому
@@ThatBenKraft Awesome dude, keep going!!
@ThatBenKraft 2 роки тому
@@kned7288 Thanks :)
@GoldenGrenadier Рік тому
I dunno, there's a 40s or 50s showcase of how differential units work on cars that's still relevant.
@drew1936 2 роки тому
You do not know how much this channel means to me. I love learning how things work, inside and out, and the detailed visuals and easy to understand voiceover make it so much fun to learn something new. Please continue to produce this amazing content!
@midas2092 2 роки тому
The effort that goes into this channel continues to impress me, I'd never thought that something so seemingly simple could be so incredibly well thought out in its every detail. Well done, thank you so much for doing these videos!
@corykiesling 4 місяці тому
Your videos have astounding detail. I cannot believe how much effort you put into them. Even the choice to spend time showing how the electrons might look as they move across the plate at 4:50 - the kind of plinko-effect, rather than just simply flipping the red and blue. Truly remarkable. Thank you for such quality work.
@theisgunvald4219 2 роки тому
I’ve without a doubt learned more than anywhere else from your channel. I love that you NEVER back down on detail and always seem to make everything easily digestible, love it love it love! Please do continue your great work! Computer engineering student
@andrewtay8086 2 роки тому
I'm not an engineering student or studying anything related to science, but I'm always excited to discover how things I use everyday work in detail and in a simple manner 🤩 love the videos
@surajvkothari 2 роки тому
Loved the sequence where the frame surrounding the wheel went transparent. Absoulutely amazing animations!
@Night_Hawk_475 2 роки тому
The timing on this is so funny to me - I was just a few weeks ago researching how feasible it was to try and build my own gaming-level mouse from scratch. I have some very awkward hand sizes that have made it difficult to find a mouse that's comfortable to me AND that includes all of the fancy modern features with buttons in places I like. It'd be really fun to 3d print my own case & buttons, and learn how to wire up the boards and sensors correctly on my own. But learning about scroll wheels was difficult, and figuring out how to obtain PCBs seemed impractical.... you managed to cover both in ways that have reignited my interest. Thank you :)
@namelesscare7982 Рік тому
I've been using these types of peripherals (mouse, keyboard) since the early 2000s. This is the most informative and illuminating video I've ever seen. Especially visual animations during the presentation are really top-notch quality.
@Hyraethian 2 роки тому
As an adult(and uncle) I am amazed by the quality and already excited to share these with the next generation. The quality is top notch from the explanation to the visual effects.
@Fexisepic 2 роки тому
As always a high quality, in-depth video that clearly focuses on education and understanding. Mad props to you guys
@constantinosschinas4503 2 роки тому
Amazing production quality and full, yet easy to understand, coverage of the subject. Thanks for preparing amd sharing.
@infinummjb 2 роки тому
I've ignored this video on purpose for some time because c'mon, what can I learn about mouse wheels - they are so simple. Man was I wrong. I suspected the visuals are going to be top notch and of course they are, as usual, but once again, the level of detail around engineering solutions is in class of its own - superb!
@FindStoicism 2 роки тому
man, your visuals and explanations are insanely well done. soooo easy to comprehend
@AshtonScorpius 2 роки тому
Thank you for another top-tier video. As a CS student and enthusiast, I love learning the inner-workings like this that we take for granted.
@MatchaCutie14 2 роки тому
You guys make learning about things fun with these animations so thank you a lot!
@nicolasayastuy 9 місяців тому
Every engineer I met, I always make sure they follow your channel. Thanks for the content!
@anthonyvolkman2338 Рік тому
Wow! I still am amazed by the quality and how indepth you go into each video. Thankyou, keep it up!!
@himanshuraj2677 Рік тому
Thank You so much @BranchEducation !!!!! Such outstanding content and animation are off the charts. My mind's blown. Love you guys.
@LaplacianFourier 2 роки тому
These are world class animations. Brilliant!
@NeoAF10 2 роки тому
Top notch graphics, animations and thorough details. Thank you!
@kaddasixseven3581 Рік тому
The love to detail in your animations and 3d models is excellent.
@nathanndruwin1782 10 місяців тому
The level of simplicity in your videos are mind-blowing.
@raghunathansundaresan8017 2 роки тому
Just discovered this channel few days ago. saw most of the videos and I just like it too much. I always wondered how the day to day things like this worked.
@BluishGreenPro 2 роки тому
I love this, I feel like I completely understand the topic. It reminds me of an old favorite (sadly, no longer active) channel called “The Engineer Guy”
@projectmoonlight7413 3 місяці тому
I literally needed to know how a mouse scroll wheel worked, for a project of mine. I thought to myself: "Branch Education probably won't have a video like that. I was mindblown to see that exact video, right here! And, as usual, the entire mechanism was explained with absolutely staggering detail. Well done!!
@thehakbro Рік тому
I'm so thankful that I was able to find this channel! Love it, keep up the great work guys!
@WERT2025 2 роки тому
Top tier animations, as always. But need to mention that 95% mice have simpler mechanical encoders.
@smithcasey9785 2 роки тому
I actually was searching for a mouse that I can trust. At the moment I have a Genius NetMouse Wheel/PS2 but I would like something with a USB connector and an optical scrollwheel (just like the NetMouse) to carry around in my backpack. Couldn't find one just yet :(
@Wanted54321 2 роки тому
This, most gaming mouse atm just uses simple mechanical encoders.
@BattousaiHBr 2 роки тому
honestly i think this was true even 5 years ago, but competition is extremely fierce and you now see tons of very affordable and cheap mice, typically targeted at gamers, with features that you only normally see in expensive ones. just look at amazon's best sellers and see their features and price point. maybe it's true that a lot of them still use simpler designs, but likely not 95% of mice.
@WERT2025 2 роки тому
@@BattousaiHBr Can you give several examples of better mice? AFAIK even top-tier gaming mice, not old by any means, like logitech g pro x superlight, razer viper ultimate, have mechanical encoders. And my current "pwnage ultra custom wireless symm 2" too.
@BattousaiHBr 2 роки тому
@@WERT2025 the superlight is an exception because it's going so far in the high end side that it's "sacrificing" some performance for less weight (though i reckon they have gone through effort to still make the scroll as good as it can). other than that, there's plenty of mice with optical scroll sensors. maybe most of the expensive ones? if you've seen mice with that wheel switch that changes between stepped mode and free mode, those are all optical sensors afaik. another good indicator (though not necessarily a rule) are metal wheels.
@pvic6959 2 роки тому
This channel has been a blessing since I discovere dit!! I have always itched to know how things work and this channel does such a good job!! The animations are AMAZING
@kasamravi4240 2 роки тому
You are marvellous .The way of exploring is amazing.We encourage you if you do more videos.It will be more helpful to many engineering students .
@harshabugatti Рік тому
Incredible animation. The way it has been explained is like a no knowledge or beginners will quickly grab the things. A thousand likes 🏆
@bradclarkson5871 2 роки тому
My senior math elective class really enjoyed this informative video, please keep the great work!
@nicoz4122 2 роки тому
This channel is one of my favourite due to its top flight engineering quality. Thumbs up !!!
@l1nk353 Рік тому
This content is what I was looking for ❤️, amazing work, keep going
@marcfuchs6938 Рік тому
The optical method is also the one with which the analogue stick of the N64 worked. For at least 20 years now, basically every controller uses 2 potentiometers at the stick, one registering the X movement, and the other for the Y movement. The N64 design was similar with registering X and Y, but with the same optical system as explained here. It was very unusual, but not a bad design at all, since those controllers were very accurate - even the stick was wobbly like hell. Still Nintendo recognized to improve this design big time with the GameCube controller, one of the arguably best controllers to this day, also part of it's (indestructable) stick.
@neuromancer845 2 роки тому
The quality of these videos is absolutely phenomenal.
@kp-dp5fl 2 роки тому
Thank u for uploading more regularly , keep it up , your vids are really useful ( for school as ) well , and also they are well designed and animated and organized , thwnk u (again)
@Romualdomgn84 2 роки тому
Thank you for this lovely video, excellent animation and clear explanation.
@errhka 2 роки тому
I've got the Logitech MX Master II so it was awesome to see how my mouse works - thanks for making these!
@drew1936 2 роки тому
Yes, now I finally know what the button behind the scroll wheel does!
@PushyPawn 2 роки тому
@@drew1936 I have a Logitech MX Anywhere 2S, and it is by pressing the scroll wheel itself that engages/disengages the smooth/stepping mode of the wheel, there is no motor but a simple mechanical latch. The button behind the wheel is its own separate button, with no relation to the wheel.
@Dust019 2 роки тому
@@PushyPawn Its different on every mouse. I used to have the standart MX Anywhere 2 and pressing the scroll wheel also enables the fast scrolling mode. I now have the Logitech G903 and it has a seperate button under the scroll wheel that enables fast scrolling and the scroll wheel click works as normal.
@drew1936 2 роки тому
@PushyPawn @David K I actually have two buttons on mine. One behind the scroll wheel, and one even further that changes the DPI between five settings. And then there are the two custom buttons on the side that I can configure to do whatever I want
@drew1936 2 роки тому
@@PushyPawn ^
@singularity___ 2 роки тому
One of the best channels out there 🖤 thanks for bringing us another video
@abhib9922 2 роки тому
The way of explanation is flawless.👏
@Bushybowl 2 роки тому
Love the way the video is presented, the commentary and the information. Keep up the brilliant content.
@BranchEducation 2 роки тому
Glad you enjoyed it!
@batman_2004 2 роки тому
This channel is amazing. Very well articulated everything!
@magyararon6918 2 роки тому
I always wondered how does it decide the direction of the movement, the dual sensor explains it. Thanks for these videos
@BranchEducation 2 роки тому
Glad to help
@TheAnimeist Рік тому
Thumbs up for the avatar.
@MrLazini 2 роки тому
These videos are on a whole other level man .... Truly incredible! Thanks !!!
@blairfernandes6881 2 роки тому
Thanks for such a high quality and deep explanation. Subbed.
@cameronmarzzarella3250 2 роки тому
These videos do not get enough views! This is amazing easy to learn engineering that anyone can understand.
@MrLuigiBean1 2 роки тому
To be fair, they _just_ uploaded this. 😆
@gavinjones 2 роки тому
Great video! The scroll wheel is usually the first thing that goes bad in most of the mice I have used. I was hoping you would have covered that too
@sumon_prodhan 2 роки тому
You and the you are working hard to make engineering/Technology easy to everyone....All levels can understand your video undoubtedly:)
@Dispelable 2 роки тому
If this channel continues on like this, one might be able to rebuild the entire high-tech civilization from the stone age just using it's videos as guides.
@TheGooEater 4 місяці тому
I was changing the encoder on my old noname mouse to seemingly same type of encoder part - potentiometer. Both old and new parts looked just alike, same xehagonal hole to engage with the wheel, same 3 contact legs. But the new part didn't work. So i squished the metal tabs and disassembled both. While the new had resistive track connected to side legs from its ends, the middle was moving across it. However the original now broken part was just 3 sliding contactors separated in a complex metal shape with many additional legs that could contact with only 2 of its legs thru a rotating metal contact on the spinning part. That was very clever and cheap solution. It lasted for years and became faulty only because of metal fatigue on the contacts, those weren't pressing hard enough to the spinning metal part. It was generic white Logitech mouse and yes i managed to fix it by pressing metal tabs that keep parts together harder.
@1123pawel 2 роки тому
This series is way too exciting!
@disposablefar1645 2 роки тому
Also great explanation on Hall Effect sensors!
@botirlasorin 29 днів тому
this is the kind of explanation world needs to understand basic working principles. Congratulations!
@triadwarfare 2 роки тому
I have two mice, the G502 which has an optical encoder, and a G102 which uses a potentiometer. The G502 still works to this day, but I had to replace the g102's encoder after 6 months of use. I didn't bother with warranty as I lost the box, and is as good as void if you lose it. Fortunately, you can get encoders shipped from China for cheap, you'll just need the right size. The encoder the G102 Lightsync uses is a Kalih 10. Fortunately, most encoders are standardized and the replacement I bought fits perfectly. I also had to replace its Omron switch. For the G502, I had to replace its middle click membrane button. It was difficult to find replacements as you have to buy it in a set and is surface mounted. I don't even have a proper hot air solder so I had to use a big a$$ heat gun to remove. I've partially melted an omron switch but it still works, and the middle click is now working.
@Switch620 2 роки тому
Super clear explanation and visual representation!
@fis8010 2 роки тому
i have never been addicted to a channel more than this channel
@zilatnic0089 4 місяці тому
This explanation helped me fix my scroll wheel, thank you
@PushyPawn 2 роки тому
If I had to fault this channel with anything, it would be that they don't release enough of these amazing 3D animated videos. 👍
@johnly_ 2 роки тому
Incredible. So many details that I've always wondered about
@AliEbrahimian Рік тому
Thanks for the video I appreciate the quality and detail of the video.
@theelephantvoice Рік тому
Loved the animations and 3D detailing!
@preethamgali3023 2 роки тому
This is the best education chanel I have ever come accross. Thanks for all your videos.
@a.lisnenko 2 роки тому
Amazing! I am sure that huge amount of effort goes into creation of these videos.
@mbenitez6722 2 роки тому
You sir need to explain me the world with your animations 😩♥️
@karansinha4719 2 роки тому
10 mins best invested. Great illustration great information ❤️
@prashantnair4883 Рік тому
I was facing this issue from months. This solved it. Thanks
@Johny40Se7en Рік тому
It's cool how both optical and magnetic systems work, but when you explained the latter, there's just a magic to that. I bloody love magnets, always have 😊
@AbhishekBana 2 роки тому
I subscribed for amazing animation and technical accuracy ❤️
@QwertyQwerty-so4kw 2 роки тому
Thank you so much for making these informative videos
@vanitamainde2389 2 роки тому
You guys are amazing and make complex topic soo easy to understand Love from India
@m.shahidur7 2 роки тому
Always a pleasure watching your videos!
@jacobvriesema6633 2 роки тому
Your content and quality animations are amazing!
@DoomFinger511 Рік тому
This was cool. I have the MX Master 2 and 3 right night to me right now and was always curious how they worked. Especially the MX 3 which uses the magnet wheel.
@gobinathsithanathan7 2 роки тому
Good understanding about mouses. Thanks branch education Mr.Admin
@rikodewantoro 2 роки тому
Wow I didn't believe my mx master 2 is tear downed here! Lovely to watch 😍
@marcgritter4835 2 роки тому
I just discovered your channel a while ago. Your videos are very clear and exacly the level of depth to actually understand the advanced tchnology behind some everyday objects. And yes, the creator's comments are beimg read as well ;)
@TheSatsoul 2 роки тому
Level of animation has once again improved! Congratulations!
@ashuzon 2 роки тому
I'm in love with these documentaries.
@huangjason6557 2 роки тому
Absolute wonderful animation and informative content!
@Jonathan-he7jf 8 місяців тому
very cool video thanks for making it.
@c0de99 2 роки тому
Another briliant video on how things work!
@front-endfatih4030 2 роки тому
This channel is absolutely incredible
@lukej4084 Рік тому
really cool ! i had to learn how it work so i can repair my own scroll wheels that jumping like crazy from a slight scroll movement.
@habtamusium8646 Рік тому
my whole sole see + listen this demo attentively and at the end found the true engineering and science of mice ! IT IS AMAZING! many thanks 4 interesting methodology and organization of audio-graphics they r like a spicy !
@BarryPiper Рік тому
Good animations and little to no on-screen clutter. I've been looking for a good video to use when I teach rotary encoders.
@randomname3669 2 роки тому
Thank you for making these videos!
@lexhd1994 Рік тому
I'm watching this while fixing my mouse. :D Thanks for sharing! Very informative
@MiD218 8 місяців тому
Great video! I just happen to have those mice. The MX Master, 2s & 3. They're still going strong like new after years of use but when one dies, I'll certainly pop one open
@whousefilms 4 місяці тому
Thank you. As always the video is great!
@SonnyDarvishzadeh 3 місяці тому
I was a teacher or lecturer, this channel would be something I would have suggested to the students regularly. Absolutely amazing information, narration, graphics and animation.
@Ayanda846 2 роки тому
I don't think there's ever a better explanation other than this
@xanderzone8293 2 роки тому
Awesome video explaination . Sir if you start making courses , it would be the best ever courses on the internet ever created and explained. Thank you
@egonvanpraet 2 роки тому
Great content. If you're open for suggestions, an EEG sensor as next concept would be nice to watch
@rbelatamas 9 місяців тому
brilliant explanation again ❤
@Treksh 2 роки тому
This is such amazing content!
@thedeathcake 2 роки тому
This Is one of the finest education channels.
Branch Education
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