How does Bluetooth Work?

A ton of your devices use Bluetooth to communicate wirelessly. But how does Bluetooth work? In this video, we'll dive into the details of how your smartphone sends audio to your wireless headphones. Bluetooth is rather complicated and thus we're going to use a number of analogies and tools to explain it fully.
This video is sponsored by KIOXIA. Visit KIOXIA's website to see their lineup of solid-state drives:
www.kioxia.com
Do you want to support in-depth engineering and technology education? Support us on: / brancheducation
Website: www.branch.education
On Facebook: / brancheducation
On Twitter: / teddytablante
On Insta: / brancheducation
Or Join us on KZbin Memberships: / @brancheducation
This video is part of a series that explores how wireless headphones work.
1) Audio Codecs • The Engineering Inside...
2) Noise Cancellation • How Do Noise Canceling...
Script, Modelling, Animation, Editing- Teddy Tablante
Twitter: @teddytablante
Voice Over- Phil Lee
Table of Contents:
00:00 - How does Bluetooth Work?
00:37 - Traffic Lights
01:26 - 2.4GHz Spectrum
02:44 - Issues with the Bluetooth Visualization
05:56 - Details behind Bluetooth
07:30 - Bluetooth Packets
08:27 - Frequency Hopping Spread Spectrum
10:58 - Noise in the 2.4GHz Spectrum
13:05 - Bluetooth Signal Integrity
14:21 - Sponsored Segment
15:33 - Frequency Shift Keying & Phase Shift Keying
18:16 - More Details on Scheduling & Packets
20:43 - Outro
Key Branches from this video are: Wireless Headphones & Audio Codecs, Noise Cancellation
Erratum:
Animation built using Blender 2.90.1 www.blender.org/
Post with Adobe Premiere Pro
Additional Patreon / KZbin Member Credits Not Shown in the Video:
Adit Kaul
Credits:
Wikipedia contributors. "Bluetooth", "Frequency-Shift Keying" , "Phase-Shift Keying" , "Wireless" Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, Visited May, 2021
Music Credits
Sunburst, Tobu & Itro is licensed under Creative Commons Attribution License
www.7obu.com
• Video
#Bluetooth #Wireless #Headphones

[@williamcherry7656]

Every so often I need a reminder of how advanced our stuff really is. Just think of how many systems like this make up even a simple smartphone.

[@appleua4807]

Id like to know it all but I dont think my brain can store that much information

[@arshenio45]

@@cafeiketson2653 stop doing drugs

[@WhatDuhDogDoin]

@@cafeiketson2653 who told you that? I want your acid trip to be peer reviewed

[@terra6713]

@@cafeiketson2653 gimme the shrooms

[@LEGENDoa]

🧐

[@Dom2k16]

So it's magic Got it

[@stuartmacleod7466]

Yes

[@RudraJMore]

underrated XD

[@sus6694]

The person who made Bluetooth is a witch!

[@name8099]

Soo underrated

[@florentin4061]

Our whole existence is magic!

[@DarylSolis]

The fact that I can send a message from my phone from here in the UK to someone in Japan in less than half a second is just nothing short of amazing. What a time to be alive.

[@petercotegolf]

I reckon it will be far better to be alive in 100 years or more as technology finds ways to cure most ailments and can stop all kinds of pain many live with daily. We are still in a very early part of our development. People will live much longer and maybe poverty will be eliminated who knows.

[@SuAmigoElilegal]

Indeed my friend 😊

[@gobble_gang]

Hopefully we can overcome hatred as a global society before that point, otherwise nothing will be better for the human condition.

[@chiweiyang3318]

​@@gobble_gangI can't agree with you anymore. The only thing that can destroy human is war which is created by themselves.

[@13Gangland]

​@@petercotegolfYou don't read the Bible do you? Literally none of that will happen. The earth we keep on going, humanity will still be here, but nothing will be at peace.

[@Jenova97]

7:45 the fact that you wrote "send to: Hedwig Eva Maria Kiesler" aka Hedy Lamarr, aka the woman who is the reason we can use Bluetooth technology today due to her developing frequency hopping, warms my heart! :')

[@anthonynye1747]

That's super cool I love frequency hopping spread spectrum I think it's fascinating

[@vervetech9395]

She didn't create the actual Bluetooth tech we use today. Just the idea of frequency hoping. Lamarr was an actress not an engineer.

[@Jenova97]

@@vervetech9395 I know, which is why I wrote "the reason why we can use Bluetooth tech" and not "she invented Bluetooth". I even specified that she developed frequency hopping :)

[@vervetech9395]

@@Jenova97 👌🏼

[@biekgiek]

@@vervetech9395 She did more than acting.

[@symn2301]

Im always impressed by how smart some humans were that they came up with this or other mind blowing tech

[@izeakskates4094]

It was generations of engineering and learning from mistakes

[@kamaalhasan763]

@@izeakskates4094 wow this is amazing reply 🤩

[@bruhh7263]

Im always impressed by how smart the internet is and that some people just copy what´s written down on it lmao

[@smallhatshatethetruth7933]

It's a shame that smartphones have made people dumber, that was the intention really.

[@joepbeusenberg]

It's a shame that@@smallhatshatethetruth7933

[@hnt510]

I'm a Bluetooth engineer at a Bluetooth chip company. You did a good job for explaining the basis of the technology behind Bluetooth Classic. However, the newer version of Bluetooth, Bluetooth Low Engergy is quite different from Bluetooth Classic in terms of baseband transmission.

[@brayangarcia6466]

Cap

[@Triple_Tron]

Sus

[@francisbalfour1243]

Just curious, wouldn't it be possible for a device to recieve and record all channels at the same time? It would obviously be vastly jumbled like shredded paper, But the data itself isnt encrypted

[@paulstelian97]

@@francisbalfour1243 AFAIK Bluetooth does do its own encrypting as well, based on that code you use when pairing devices with each other. Also listening to multiple frequencies at the same time is not something that is easy to do, you'd need quite expensive hardware if you want that amount of flexibility actually.

[@francisbalfour1243]

@@paulstelian97 even if it is, it would need to send it's key to the phone/earbuds. Which itself cannot be encrypted or the device wouldn't beable to access the key to decrypt later packets. So the key itself seems like it could be evesdropped

[@tsarprince]

If you pause the video at places, you'll realise how detailed the video is at each timestamp, this must have took days to compile such great information in so easy to explain intuitive manner!

[@JAYBEE_JB]

As a doctor in Wireless network, IoT and low rate communication, I understand most of this, however, I've never listened & visualised the way this was explained here, it was so exciting to watch & listen to. Thanks to whoever created this content! 🙏🏾🙌🏽

[@panshultiwari6613]

Can you explain what does a doctor do in a wireless network?

[@JAYBEE_JB]

@@panshultiwari6613 I'm not a medical doctor but a Doctor of books & research in my own field. You can search for that online for this mate.

[@serahime]

@@panshultiwari6613 they mean they have a phd, or doctorate, in those technologies, meaning, they studied for long enough to eventually contribute to the field, only recieving the doctorate once they did

[@thinkingagain5966]

​@@serahimethen he should have said doctorate

[@inhort8644]

How did we go from banging rocks to this

[@DavidG2P]

Entropy definitely going the wrong way here

[@Forgan_Mreeman]

you bang rocks?

[@arande3]

@@DavidG2P one definition of life I've heard is that which defies entropy

[@vafixer8885]

Its been a long time. there has been plenty of banging and rebellious youth trying to be cool. ILL MAKE BLUETOOTH FU BOOMER. etc.

[@vansdan.]

@@arande3 we are agents of entropy. life accelerates entropy by like 20x or something. Earth emits 20 photons for every 1 it receives from the Sun, but at 1/20th the energy each.

[@wilhelmbittrich88]

This seriously just makes me appreciate how amazing our technology is that we take for granted. Seriously mind blowing stuff.

[@unlokia]

Any more overused superlatives?

[@Pactastic042]

It's actually very simple , you should go back to school or stop being so naive and gullible

[@JohnSmith-kc6ov]

Right now, I am sending you a message. It took 1000 acronyms, half of which you've probably never even heard of, to do it. HTML, CSS, JS, HTTP, BGP, IP, just for the website part, not to mention SSD, CPU, GPU, HDMI, and USB on my pc, and that's just what I can think of off the top of my head with what limited info I have on the subject. What about all the other technologies needed to make the keyboard I'm typing on, the screen I'm staring at, and the computer processing it all? What about the manufacturing process itself? The servers at youtube HQ, and the technologies to communicate between them and your pc? I feel like if one person ever properly understood every single one of those technologies we use every minute, they'd go insane from all the information. It's the life's work of millions of people, all culminating in the single greatest thing we've ever created. The sum total of all human knowledge, the answer to anything you could want to learn about and everything you could never comprehend, and the equipment to access it.

[@wilhelmbittrich88]

@@JohnSmith-kc6ov Agreed.

[@isaaccardenas5362]

@@JohnSmith-kc6ov B

[@ambition112]

0:00: 📶 Bluetooth technology uses electromagnetic waves to transmit information wirelessly between devices. 3:47: 📡 Different visualizations of Bluetooth waves and frequencies are explained, along with the division of the electromagnetic spectrum into channels. 8:32: 📡 Bluetooth operates by sending packets of information through frequency hopping spread spectrum. 11:11: 🔬 Bluetooth headphones and smartphones can lose signal when a microwave is on, but Bluetooth signals can easily travel through obstacles like walls. 15:43: 💡 Bluetooth uses frequency shift keying and phase shift keying to transmit information using electromagnetic waves. 18:36: 🎧 Bluetooth headphones use frequency hopping to transmit data between the smartphone and headphones, with packets consisting of access codes, headers, and payloads of varying sizes. Recap by Tammy AI

[@jasonowenz-wh5fl]

Fascinating

[@kartikeyamaheshwari9896]

Cool dude!

[@SnowyRVulpix]

I’ll just accept that it’s magic

[@PeteyGreen1982]

😂😂😂😂

[@d716agq]

I was a designer of CSr bluetooth chips some 10+ years ago and am literally working on a wifi 6 chip right now these explanations and especially the analogies are perfect!

[@BranchEducation]

That's super cool!! One topic I struggle on is explaining the circuitry because I did systems engineering for ion implanters, and an etcher tool for a little, so I didnt get exposed to any chip level design. Any interest in helping with this topic?

[@briscain]

This makes me a rock banger for sure.

[@alejandrotorres1252]

@@briscain So do I

[@Garretthegr8]

You Really got offered a collab and didn’t respond 😶

[@bruhdabones]

Cambridge silicon radio

[@hairyobama420]

This is so complicated, props to the engineers creating this masterpiece

[@vmp_online]

collective learning man

[@nya8482]

@@vmp_online yeah

[@projectartichoke]

Jacobus "Jaap" Cornelis Haartsen is the inventor. There wouldn't be much without the Dutch!

[@dodssosiro]

​@@nya8482 😅😅😅😅😅

[@AlvinCEliot]

Is Mike, Brian, and David ok, what about you harry

[@Phawder]

The precision required and all the various pieces working together in harmony is awe inspiring.

[@sa121895]

Absolutely brilliant analogies to explain extremely difficult concepts such as phase shifting. Awesome video as usual!

[@michaelvereker4681]

It is a crime that you do not have 1 mil subscribers yet. This is Soo coool :)

[@sashathomas1820]

100%

[@fatah496]

Yep

[@techmad8204]

Yup I subscribed after the ssd video

[@blackdeathghostye6654]

All those who aren’t subed yet should be changed with crimes against humanity

[@mayankdegada9829]

Sabar karo 🙂 The day will come soon

[@mrnobody6609]

One of the things that absolutely blows my mind is anything wireless. I understand how it works, but it still blows my mind. The fact that I can pull my phone out of my pocket, and just watch a movie in Ultra HD quality is something I'll never be able to get over. I can't even begin to describe why it's so mind blowing to me, but if you know, then you know.

[@joeKisonue]

BTW Ultra HD is pointless at the small scale of our phone screens. And 8k is not actually functional unless you are as close to the TV as you are to your phone. At that distance you're missing the big picture. Ha ha

[@gabrielandy9272]

as someone that grew up on a time that most things are wired, it does make me think how muhc technology improved, now i don't get this feeling anymore but i still remember how it was in the past.

[@Jotinha26]

Yhea you are getting that data, audio, information and everything that is stored in a server across the country/world almost instantly. The speeds of this are astonishing and it happens everywhere with everything

[@egg979]

My mind was blown when they first made touch screens and I still had old Motorola phones and Nokia

[@solar9137]

i agree

[@paulvalasutean7285]

This video is unreasonably good. I dont think i've seen an educational video of any sorts with better analogies, explanations or better representation than this one. Big up, man!!!!

[@Ove_Ove]

Technology nowadays is truly mind-bending, and the way you guys explain and illustrate it is on-par with the magic happening all around us. You have our deepest respect!

[@JayBiznizz]

Check out the evolution of video game programming storage. idk even know how to explain it 🤯

[@theadidastm1266]

yeah but i would also like to now how was all this technology created knowing this now. I get the waves, freqency packets but how was the technology like this created and who thought of it. Its fascinating.Im not educated in this stuff but was always fascinated by it. My mum told me as a child i would ask some difficult questions that she would not have the answers for you know right around the time we started getting coloured TV's then later on computers and its understandable her living in USSR Russia it was about survival... thing like sports and physical activity knowledge in combat sport some basic knowlege of math science and whatever language i believe it was German and English they could choose and anything that would make the country seem to be or to actually be strong there was no time to learn how a TV work so the point being was whenever a new piece of technolgy would come in like a black and white tv, then computers people would just get the basic jist of it "well u just stick a casset in and it reads it" or "here u press a button it makes a sound and the loads in to windows which is also a science of it own like no real interest in it. So now content like this is answering a lot of question for me.Im very glad i get to live in this peroid of time. With all the shit thats going around the world im very happy i get come home form a shift and dig into fire content.Fuck the drugs fuck toxic ego driven behovior, fuck laziness and blaming other poeple. Just find ur interest and put some effort into it.Especially the dummies in America get it together ur leaving an impact on the world dont you get it without even realizing in cause its the goverment doing it. How about working on yourself understanding politics and not just watching the biased news and reading headlines and basing ur opinion on that.The great people of America will understand and want live in peace. If you chose to speak or protest on something at least spend some time getting it and understanding it.

[@theadidastm1266]

Sorry for a switch of topic had to get that one off so i did knowing there are smart people here.

[@theadidastm1266]

oh and i dont wanna make it political on this channel but could anyone explain in detail why i should go for Hamas instead of Israel after Hamas killed 150 innocent people ? Supposedly trying to prove what exactly ?

[@danteerskine7678]

​@@theadidastm1266it's funny how no one pointed out where Bluetooth origins came from. This tech was named after the king Harald "Bluetooth" Blätand, and Harald had a son named "gabeldorsche" . Funny enough, in color Os found on OPPO smartphones, there's a setting called, enable Bluetooth gabeldorsche. The Bluetooth logo itself is pretty much Ancient Nordic Alphabet. I never thought this name was attributed to a Nordic sovereign a thousand years ago. Everytime I swipe down the notification shade on my phone, the Bluetooth toggle is the thing that I see the most

[@squid1712]

Thousands of engineers, scientists, tech designers pouring months to years to make this technology, exctracting rare earth elements from all across the world that miners risk there lifes for everyday to get, all so i can watch some hentai without my family knowing. Human achievements never cease to amaze me.

[@jesusmontanez769]

Until you realize the video isn't playing sound in your earphones because you're still connected to the family speaker in the living room. T-T

[@HalfDroid5]

@@jesusmontanez769 Bro that happens to me all the time! Usually I just roll with it and blast it from the speaker so I can hear it. After about 30 seconds I’ll be done and disconnect from the speaker. In case your wondering yes I do get weird stares from my family. Mostly my sister but my dad does it too so she and my mom are used to it.

[@denziljacobs]

I love this video so much, the visuals, the notes, the knowledge, the education. Its phenomenal and I would love to see more. I am going to enjoy this channel a lot

[@janmangu399]

Mind blown. PS. I am an electronic engineer myself but still you give very complicated information in a simple understandable format. And its amazing to know how these work

[@JaredOwen]

Fantastic! This video will be useful for many years to come. Great job Teddy😎

[@bhaarathputrans8257]

oo!!

[@TheThirdPrice]

Crossover of the year right here

[@chigingshah1824]

I'm your subscriber

[@rajneeshifollower811]

Omg 😲

[@muhammadhanzala313]

I'm your subscriber

[@MrMuumbutoo]

I actually feel like a child again learning something so amazing and having my curiosity sparked, thank you

[@ambush862]

Go start watching ryan

[@kidsaresodelicious9666]

@@ambush862 how old are you my friend?

[@calclips]

@@kidsaresodelicious9666 24

[@kidsaresodelicious9666]

@@calclips nice delicious

[@njun3426]

what a bizarre conversation

[@CaerelsJan]

Since nobody is mentioning this: One of the best (and most relevant) sponsored segments in a video I've ever seen. You just proved that having in-video ads can actually be highly relevant. Great video about bluetooth!

[@dddsss2023]

I love these explanations. Having worked with colleagues in the Bluetooth environment, I was never really able to grasp the concept and it was pandora's box for me. This video really helped me understand it better.

[@Andres.Guzman]

I am incredibly impressed with the presentation of information. Starting with the simplest analogies and using them as blocks to build into more complex ideas is invaluable. You guys have earned my subscription

[@aimanharith5817]

yesse 😄

[@anatoliy333]

Insanely well presented.

[@zeedoogyboy]

Andres, I agree! Wonderful presentation.

[@habibdeleonbanos8196]

Hell yeah

[@jamess5399]

I am impressed with your comment about what I was going to comment about. Their presentation is outstanding. Visuals. Commentary. The whole presentation is in a class of its own

[@ViperzITG]

I still don't get why your channel doesn't receive 100x more audience, can't stress enough the quality of your work when it comes to vulgarize complex technology while going in depth through all the layers that makes them with such attention to details and accuracy in a limited time. Keep them coming, we'll be watching.

[@MetallicReg]

There is no doubt that people will come with time!

[@VaderHater1993]

Did you mean visualize?

[@ViperzITG]

@@VaderHater1993 No, vulgarize as in "make less subtle or complex".

[@fatihyener7589]

Cause it sounds too much like a robot and it can be boring.

[@Boss_Tanaka]

2021 June the 19th, l just discovered this channel. Instant subscribing and binge watching. I think there are lot of people who would be interested in this content but they just dont know it exists

[@kashishgarg1224]

these animated education of these complicated devices and technologies is much more than grateful... I really request to kindly give us more and more informative videos

[@halodude50]

Instructions unclear I microwaved my AirPods.

[@defe6520]

Your brain

[@maklowiczxd]

Did they charge?

[@vincentcloud7185]

The crazy amount of detail needed to make these videos is mind blowing

[@Maltanx]

I watched all your videos and i still can't believe how informative and well animated they are. Thank you!

[@BranchEducation]

Glad you like them!

[@fatah496]

@@BranchEducation thanks for your hard work

[@TheOnlyDamien]

@@BranchEducation Is there any chance you might do a series one day on how you obtain and process such amazing photogrammetry (assuming) models? It's insane the quality and I would love more knowledge on the BTS process on these videos in general!

[@BranchEducation]

@@TheOnlyDamien Yeah, in the near future I'll make a video on that. It will probably be on one of the shorter videos, because longer videos, well, just take too much time already.

[@TheOnlyDamien]

@@BranchEducation That's perfectly understandable and I am excited to hear that it will happen in the future! I am fascinated with the process because I have never seen an educational channel have such amazingly detailed models for these breakdowns and I would love to know how it works! Thank you for all you do, you genuinely have no idea how many fields you have fascinated me on!

[@garagedoorrepairsgoldcoast]

Really well explained and very detailed! Love this kind of content. Most of the time these things are only explained in a very rudimental way, so I'm glad I found this channel!

[@lucianomelo9750]

Very Good. I`m Brasil. Não sou bom de ingles, mas fico acompanhando pelas legendas traduzidas para o Portugues. É dificil ficar parando o video e interpretando. Mas como amo a ciência e tecnologia, faço com satisfação. E a forma de explicar e comunicar é muito boa. Parabens à voces e aos patrocinadores. Obrigado. Thank you very mutch. 👏👍👋🤜🤛

[@mps6934]

I discovered your channel today. Your explanations (including the intentional repetition of information) and especially visualizations are superb - I mean really world-class IMHO. Channels like this are what make KZbin an amazing place and should be treasured. Faith in humanity restored!! Hope you never ever stop making these amazing videos

[@nathanmartinez2630]

Yeah the visualizations really are superb

[@duckybahiroast]

I came hear to write the same comment but you stole my words

[@avi12]

12:11 The fact that you repeat the warning twice shows how far humanity has come

[@bro_FREE]

This was super helpful. I have started doing some work in this area and have been looking for a good explanation. Thanks so much for sharing the information!

[@cheeheifoo9282]

Appreciate the technical content but also the hard work that went into the illustrative videos. So thanks!

[@DerpsGW]

It is really mind blowing that this is all REALLY happening. Though, I do think it's important to remember that many of the discoveries and science done that makes this technology possible was built over generations and not all in a few years. Standing on the shoulders of giants as they say.

[@cliffontheroad]

Giants of Industry now yet Packets were used by some Amateur Radio Operators (HAMS) in the 70's, least we forget the guy in his garage (or "shack") for developing the concept into reality. Maybe not all the credit, for hams had day jobs as engineers. They like to tinker. :)

[@galfisk]

Frequency hopping was invented by actress Hedy Lamarr and composer George Antheil.

[@imranq9241]

"..and it's all REALLY there" --Feynman

[@cliffontheroad]

@@galfisk U R making a joke, right? I missed getting the email, but thanks to Imran Q, the "Peters' Principal" (not Billy Peters) has availed the Hedy is someone to check out on DuckDuckGo. Now Feynman had something to do with the BigBangTheory, and it was someone else who said "I've given up my search for Reality, now I'm looking for a good fantisey." This cmnt will self destruct in one day. Good luck from Pennsylvania Mister Phelps.

[@BMcD314]

The use of thoroughly depicting multiple different visualizations of the concept was a really fantastic idea. The animations are incredible

[@AnexoRialto]

I'm really impressed with how clearly the concepts in this video are explained.

[@victorgasnier5654]

Really interesting and complete explanation to something I always wondered. Thank you !

[@DamienPictures]

This technology is so advanced to me that it seems like it was made by aliens.

[@tomv3361]

Now imagine the tech we'll have in the upcoming decades.

[@katiealdana150]

it was... it is...

[@millieh3179]

If you want to see alien hieroglyphics just look at the math behind frequency modulation.

[@JohnnoNonno]

It's deceiving to learn about it like this, because you don't realise the middle steps that came before.

[@maxk5065]

now look at the mri and how we use giant nitrogen cooled magnets to exploit quantum propriety of water to take microscome-like picture of inside of the body and fmri that does the same but also use the one Fe atom of red bloodcell to estimate if it have oxygen on it and hence where the brain use the oxygene and hence witch area is active you and i probably don't understand (and by that i mean we could not make it) most technology past 1800-1900

[@arahman3897]

Speaker chuckling 😹 : 12:17 *"Do not turn your microwave"* BTW Thank you.. ❤️

[@hardayswork]

I died laughing.

[@paulembleton1733]

Were it not for that warning, I would not be replying now.

[@dorischoo]

Love it, interesting and informative. Clear simplicity explanation, demo makes this complex subject easier to absorb. Marvel to the people who design and develop this many such devices making our life so much fun. 🙏 thank you.

[@AnilKumar-rp2vs]

Excellent video and exposition. I plan to use it in my courses. Thank you for your time, commitment and your generosity to educate others.

[@EvilSandwich]

Can I just say that I appreciate the time you took the beginning to clear up some of the potential misconceptions that could have cropped up from your graphical abstraction of the data flow? So many people don't bother, which can lead to so many potential misunderstandings. So thank you for nipping that in the bud right the beginning.

[@chairforcegaming6230]

Really impressed w this video tbh

[@ashtentheplatypus]

11:34 "Don't sit so close to the TV or you'll ruin your eyesight!" -- Mom

[@JoaoLeote7331]

Simplified, a bluetooth device is a lightbulb emiting invisible light that can be seen by the other device, and certain characteristics of this light can be decoded into binary, which in turn is decoded into whatever you want. An earphone, for example, will get the information of how to vibrate in order to create the desired sounds.

[@mskiptr]

This was a really nice overview! Still, I would love to also better understand how the protocol works | is supposed to be used on a bit higher level. I found it makes using technologies like this way easier. They just get more reliable for some reason

[@atharvakodape7494]

As an Electronics engineer graduating during Covid, these awesome animations have really taught me well. They really compensate for what I missed from having online lectures. This particular video has spanned across 4 subjects and 3 semesters. Though not complete syllabus, but it really helped me understand the basics. Thanks man!!

[@jesphyrbajo9971]

EcE here too haha

[@divinepraiseericc]

Here three...! lol... TBH studying ece at school here in Nigeria was almost nothing to write home about...

[@BranchEducation]

*What are your thoughts* on longer-length videos? What is the longest video on KZbin that you have stuck around and watched in its entirety? Conversely what are your thoughts on breaking up a single 30 min video into 3x 10min videos?

[@aimanrahman5768]

My longest is 3 hrs

[@macmanuelodumeru3708]

Make it as long as you want it to be but with the animations

[@Rodox2k10]

I like it that your explanation doesn't rely on just words, those animations do play a big part to help us understand and make sure we're following! So provided that _those videos are long _*_but with animations,_* I'd say go for it. It's going to be more work for you tho.

[@lennonmclean]

The captions on this video have a bunch of unnecessary hyphens

[@erth8096]

My max is around 3.5 hours

[@Robot007]

Magnificent presentation. Although I still do not understand the intricacies? Of this technology, it gives me an idea how misterious and practical it is. Congratulations for ALL the effort that was applied to produce a flawless video. Again, THANK YOU!

[@AnggoDoggo]

The way you explain everything in this is absolutely spectacular I just don't know how to even begin showering this with enough praise it's like the best form of information unpacking and any time I naturally have a question or a thought about what you're talking about you instantly answering in the next part it's absolutely spectacular

[@KishanKumar-ul1ef]

I love how you're providing each and every minute detail without compromising with the ability to explain it so easily.

[@raitrehemets2067]

Saw this in my recommendations at 4AM (being drunk), and I tested the microwave oven part, it actually does hold up and it blew my god damn mind. At real close range it will send a photo. But around 2,5 metres it already felt real slow and placing the phone behind a wall at 3 metres killed the connection (image failed to send). Standing at 2,5+ metres while trying to send a photo, it always failed to make the connection. Phone out of the microwave oven had no issues sending a photo from another room through a wall (around 9 metres distance). The phones I used were Samsung Galaxy A50 as host and LG F70 as the receiver. Awesome video!!!

[@BranchEducation]

That's great to hear. I tested it with my microwave, but it's good to see it applies to others as well

[@Tadesan]

The chassis of the microwave is insulated from the ground and antenna of the phone. If the phone were ‘grounded’ to the microwave the shielding would be even better.

[@MrMaxyield]

@@Tadesan *bonded

[@defnekolay7496]

I appreciate how clearly you explain everything. Thank you!

[@bwhiteman07]

Great explanation. I loved how you explained the transmission in various ways.

[@a11ienz28]

i just love learning about technology like this. i mean its mind boggling how complicated and amazing the technology we use every day is, and to most people it might as well just be magic. not many people really understand or care about how this stuff works.

[@elie933]

99% of people think it's magic

[@VulpisFoxfire]

@@elie933 Clarke's Law. :-)

[@swankitydankity297]

No words can describe how fantastic every video you produce is. The production quality is astounding and the graphics and visualisations are absolutely perfect! Not to mention the excellent narration that thoroughly covers all aspects of the presentation. Looking forward to the next one!

[@BranchEducation]

Wow, thank you!

[@seanh1355]

@@BranchEducationI just discovered you and am enamored. I have to ask, are you or the narrator involved in the USCSB animated videos? It’s giving me the vibes. Also Merry Christmas

[@BranchEducation]

@@seanh1355 Merry Christmas to you too! Nope, we aren't related to the USCSB videos.

[@impellentinfo6749]

​@@BranchEducation which applications do you used for animation

[@LarryLaird-eb8rp]

This is amazing and I love the narrator explains in a way that I can understand. Thanks for your video....

[@mibrahim4245]

can't wait for the antenna theory with your beautiful, clear, and detailed explanation .. please make an episode about it in details, kinks, propagation, patterns, etc...

[@fujinafiul6044]

I am speechless after seeing how amazingly "Bluetooth" technology is explained with such basic details with wonderful visualization. As a CSE grad I don't think this could be more easily explained

[@StevenAlbert15]

This channel must be protected by all costs. It's a true treasure!!

[@k4piii]

Just donate to them :D and share the content

[@StevenAlbert15]

I did actually, the badge indicates that :D and definitely shared lots of their stuff

[@k4piii]

@@StevenAlbert15 I just notice that, you are a great guy! I hope they can keep doing videos and stuff

[@rbnhd1976]

Too late. Tik tok has invaded. Everything must be assimilated.

[@michaelbeckerman7532]

Easily the best video I've ever seen on this subject. Really well done!

[@MohammadAdnanRabbani]

Very informative & I loved the presentation ❤

[@davidpena9698]

Bluetooth is a lot more impressive than I thought, I just knew it transmitted on frequencies. I never stopped to consider clogged channels or data being sent to the wrong device

[@huxleypolson-filas1385]

i didnt even make it there and its fascinating early on even

[@master74200]

It gets better when you start to read into how bluetooth actually transmits data, aka what the _protocol_ itself does.

[@princekha4540]

You are the top 1% of your field 👌

[@k4piii]

0.1% I would say, trust me, I am an engineer

[@princekha4540]

@@k4piii I agree 👍

[@roohanaparabia4200]

Wow! Its impressive. Outstanding work. You all are so good at what you do. I am happy I came across this channel. Your videos give lot of clarity when I read about the topic. Thank you very much.

[@cicly6231]

I literally found this channel today and watched like 5 videos and always impressed

[@HarnaiDigital]

Phenomenal Animation, Stunning Texturing, Spectacularly Rendered, well Edited and Beautifully Narrated. Really Appreciate that Hardwork. Keep it up.

[@csims.22]

I love this! I’m a tech nerd (but not an engineer) and love to learn about this stuff but it’s hard to find videos that are informative, graphically simple, and keep the engineering part of the technology as simple as possible. I like the occasional humor too; funny but not distracting. Thank you!

[@omoragan]

The different visualizations are very helpful

[@mahdimotamedi6812]

OMG It cannot be explained more simply than this. Thank you!

[@gabedarrett1301]

Your channel teaches better than universities! I haven't found any other KZbin channel that covers this content nearly as well!

[@paulcazza]

This is the first Branch Ed video I've seen. You are your own best advertisement - I bet a very large proportion of people like myself who run across your channel don't just walk on - I think they do what I'm about to - rub their hands and go and explore what other topics he's covered. Thank you Branch. I watched this with my 10 year old and thank you for his sake as well.

[@Zane3Erik]

After 4 minutes I can already tell this is a work a quality. Explaining all the basic knowledge necessary, an analogy welcome for people unfamiliar with the issue. Plus the different visualisations for diffenrent goals, all of this explained clearly, with a calm voice. I recognize there is a lot of work behind the scene. Even as a gratuated student in physics I feel I will learn a lot.

[@sorryTouYubewastaken]

Well stated. As someone that has learned primarily "on the job", I appreciate clear simple explanations of complex subjects.

[@cockasorrus7475]

Most excellent!

[@quizvideos1]

wow

[@Snofous55]

superb presentation!! answers many of my questions. thanks a lot!

[@mahmoudal-thaljah5160]

I could spend a whole day watching this channel and I will not regret a minute. It is full of knowledge. Thank you very much. (Syria)

[@nathanielmajors9817]

The idea of phase shifting just blew my mind! What an fantastic way to increase the speed of an output!

[@aaravsibbal8568]

Exactly what I was thinking!!!

[@qules]

I can't believe how I took Bluetooth for granted with me using it currently to listen to this and how complex it truly is which is a testament to human prowess. Great video in explaining something we often use to understand the complexities behind it.

[@anupamsingh25]

I have never scene such good quality explanation with top notch animation...u guys wherever u r from are amazing...i wish i could have access to such videos 15 years back when i was in college...

[@user-eh5ey2ix8k]

Fantastically explained the complex phenomenon in simple words. Thanks for clarification. It will be definitely helpful to student and interested individuals.

[@steveholmes1370]

I absolutely love that they used Hedwig Kiesler, and her home address, as the address (~7:50) for the example of the access codes/header. She was the one to discover/invent what would become bluetooth technology.

[@Ozninjaguy]

Nope. Bluetooth was invented by Jaap Haartsen.

[@Shizbazki2]

@@Ozninjaguy That specific part of the video they are discussing how Bluetooth prevents interference and encryption by frequency hopping. Something that Hedwig Kiesler (better known as Hollywood actress Hedy Lamarr) co developed during WW2. Jaap Haartsen used part of Hedwig's creation to allow for Bluetooth encryption. Google: Mother of Wifi Wifi also uses frequency hopping

[@Ozninjaguy]

@@Shizbazki2 Thanks for the info.

[@larsw.5559]

Every single video of you teaches me something new. Thank you ! Watched every single video of your chanal. Thank you!

[@rtstm]

I actually understand. I love how this was taught. The 'packets' of information given here is digestible. Thanks for the knowledge! Now, subscribed.

[@user-hb9wc7sx9h]

This is so complicated, props to the engineers creating this masterpiece. This is so complicated, props to the engineers creating this masterpiece.

[@cconnors]

Again another great video. Not only are they very nicely animated but you explain why things work from first principles, working from the very basics up. Always a pleasure to watch.

[@nottheengineer4957]

I love how those videos are both very accurate yet simple enough to keep everyone interested. I always thought that complexity was something to get perfectly right when explaining something, but you are making me rethink that.

[@ThatGuy-qj7fr]

This was very informative. Thank you.

[@julianxe]

This is the best explanation i found, great work!

[@anthonylucero]

This is the only youtube video and channel that actually explains in detail what happens in a very easy to understand and digest way.

[@bmodoryx]

Your videos are of legendary quality and clarity. The concepts are incredibly complex, yet you manage to make it intuitive and almost simple to understand. The technologies are a true marvel of human intelligence and collaboration. However, making it understandable and jnspiring for such a broad audience is something that deserves enormojs respect. Thank you!

[@parthbansal7005]

Concepts are very clearly explained

[@viktorbeldjajev5720]

Thank you very much for simple and clear presentation on this topic.

[@prasannarenapurkar5420]

Guys you are doing great job , I am an electronics engineer and couldn't have explained it better , the visualization were on point and also notes regarding the visualization!! I am grateful I came across this channel!

[@playerscience]

I've no words to describe how absolutely amazing this video is! This video and the Bluetooth technology both are work of art!

[@TheSfelex]

AMAXZING quality in explanation and visuals. thank you so much.

[@7AppleFan7]

I am impressed on the simple explanation. Now I can understand Freq hopping easily...

[@41linestreet]

I find the technology behind bluetooth to be just as mesmerizing as this channel's ability to explain such complex information to me. I'm grateful for both. Liked and subscribed!