Homemade speaker made with a toy motor /// Homemade Science with Bruce Yeany

[@gravityisnotmyfriend]

Great video. I had no idea a DC motor could transmit the complex vibrations required to create sound. Honestly, I was skeptical enough to create my own. And what do you know? It works! My kids absolutely loved biting the dowel and hearing music in their heads.

[@allwinaristo9590]

When you pass 12v ac current on 12vdc motor, it just vibrate a lot. When pass audio to motor with amplifier, it vibrate according to the frequency.

[@baltasavr]

in the USSR 50 years ago, I used to plug my dad's electric razor into the radio socket and listen with it to my ear.

[@Youngmafiofficalheree]

Yeah obviously it’s vibrating

[@magnushederstjerna5975]

@@baltasavr Thats one creative way to listen to radio

[@trenvert123]

@@baltasavr That's a cool story. Thanks for sharing.

[@42tancho]

So... How could I minimize this to, lets say cheat in tests by chewing on a pencil

[@BatMan-ke4ov]

Tancho K. you sir,are a genius

[@smackmybones1371]

Tancho K. well you could slip the device into your jacket pocket or something similar and have it so that you can slip the pencil on the motor shaft. all you would then have to do is make a recording of fyourself saying whatever it is you need there you go. I wouldnt advise doing it but for the sake of learning electronics and wave propogation you could always do it for fun

[@Heulerado]

I'd be careful not to use the table as a speaker when writing, so everyone can hear it . Or maybe it would just sound like a vibration, but not very stealthy anyway. If you could switch it on and off, that'd be better

[@red62]

stop giving him ideas!

[@mohamadrofiq8854]

hmmm...and don forgot to camouflage the motor..hahah

[@BisMaxx]

that was really cool! bitting on the rod and being able to hear the music without creating noise in the room could present some cool commercial applications. "no headphones? here, bite on this stick! " 😂

[@nodgod7109]

BisMaxx You could make a cigar that makes sound when you bite it 😏

[@cxsism5127]

I know there used to be a kid's toothbrush that did this. it would come loaded with a song that you could hear while brushing your teeth.

[@DannyGruesome]

BisMaxx a mouthpiece with an auxillary cable

[@giin97]

BisMaxx they've been around for quite a number of years. Look up bone conduction headphones. They sit on the bone behind your ear, leaving your ears open to hear normally. You lose a touch of the high end going through the skin, but otherwise quite decent.

[@BisMaxx]

That's awesome. I'll have to google them.

[@davids9139]

You are amazing! The world needs more teachers like you! Thanks for all you do! :)

[@PokefreakMaster333]

Proof bone conduction audio works

[@bveracka]

This would be a GREAT project to do with middle school or high school kids. I think you'd be hard pressed to find a kid who wasn't interested (at least a little) in making their own speaker; after all everybody loves music! It'd teach them something great and they can plug their smartphone into it. Excellent job with this video!

[@YeanyScience]

they seem to really like it, especially the speakers that they bite down on, shown in another video

[@bveracka]

Bruce Yeany Speaking of that; there are a couple of companies who are currently selling products which utilize the same principle. One product that I saw advertised over the summer was a pair of sunglasses that have vibrating nodes (much like the stick you bit down on in your video) on the parts which wrap around the back of your ears. The contact and slight pressure on the skull behind the ear is utilized as the channel to deliver the music. I wouldn't doubt that audio products that use contact vibration (I don't know the scientific term) will take-off in the next few years. I imagine super-small Bluetooth devices that allow audio to be enjoyed with no bulky headphones or finicky earbuds and no wires whatsoever. But anyways, that's enough about that! Happy Holidays to You =)

[@gazamisheawoh]

still sounds better than beats

[@harkostroef]

my god that savage

[@fen4554]

Shots fired.

[@Legiaseth]

Cristiano Ronaldo That's not hard, Beats cost under 3 USD to produce

[@amicaze9570]

I'm always amazed at all the people buying beats when in reality they are really shitty headphones

[@Legiaseth]

Amicaze 95 Another proof that the most expensive isn't always the best

[@yourdad9168]

But can you make a paper plate 7.1 surround sound system?

[@hippopotamus86]

Probably the 7, but not the sub.

[@DigGil3]

Maybe the sub too with enough filtering and tinkering...

[@nickdills2031]

I was thinking about maybe a high pass filter on the wire going to the motor so it'll play the lower notes.

[@HTea49]

Nick Dills wouldent you need a lowpas filter to hear the low notes?

[@hippopotamus86]

Nick Dills high pass means it let's higher frequencies pass to the driver.

[@Drachenfang]

You're amazing. Your channel is going to make a LOT of our students at the school where I work VERY happy. Can't wait to build a lot of your things with my kids.

[@YeanyScience]

thank you for the comment. If you need instructions or additional information, send me an email address. I have write-ups on most of these pieces

[@GaryEinhorn]

Bruce Yeany what is your email address? id like the instructions for this for a lesson on waves

[@OnlyNotes]

"Hey man, listen to this new song I found" Uhm, how? You're holding a stick... "Yeah, now put it in your mouth" ... "You'll hear music, I swear."

[@hard_satania926]

😂😂😂

[@crisbowman]

Lilo and Stitch...

[@X-Gen-001]

That was brilliant. I think I learned more just watching this than I did during high school.

[@giantdad1661]

You must be one awesome science teacher. I hope common core doesn't limit what you teach too much.

[@ancbi]

I'm new to the channel. However, I'd like to say that I love how you always show `control experiment' such as `cutting off the current to speaker', `shading solar motor from the sun to see it stops'. Makes for a very convincing presentation.

[@YeanyScience]

Thank you Apiwat,

[@Jacob-Day]

I suppose the motor makes Good Vibrations?

[@luisjuliato2341]

Jacob Day _C O O L V I B R A T I O N S_

[@jub8891]

lol

[@fryncyaryorvjink2140]

Careful, that's how The Who songs start

[@russellcollins5692]

The “Fundamentals” Love Them.. Your work is Very Helpful to designers. Thanks

[@assadij]

Hi, just to let you know that the sound is not produced by the rotation of the motor's armature, but it's actually the whole motor's stator and rotator vibrations. The arm attached to the motor is only transmitting the pressure waves. You could do the exact same experiment without the arm, just hold the motor between your teeth :-) A DC motor's frequency response would cut-off the audible region. Love the channel. Love the experiments. Cheers.

[@YeanyScience]

Hi James, this is what I like about posting videos, someone like yourself comes along and explains more about the piece that I didn't know. Thanks

[@assadij]

Bruce, I can't stop watching your videos. They are very educational and I've learnt a few things in the past 2 days since I've discovered your channel. So thank YOU.

[@ashir22ify]

@@YeanyScience 🙋👏

[@TheHackysack]

lol the abrupt "ok BYE" really got me but for real, this is like magic to me

[@virginiadalcastene8171]

And keep on doing this !. You are one of my best teachers. Thanks!

[@YeanyScience]

thanks

[@elit3darkness]

Better quality than what JBL consumer products are today!

[@hugueshenrion6642]

You are such a good science teacher, your projects cover a lot in physics through easy to understand concepts. Love to replicate them to play with my nephews! Thank you so much.

[@GamePlayShare]

When i was a kid i made a "speaker" by putting a wire around scissors and attached a magnet to them. It was already enough to produce some sound. So basically you can make sound source almost from anything.

[@mikecronis]

Stock radio speakers in cars aren't as good as this.

[@andthesunsets]

the calibur of these projects is amazing!

[@YeanyScience]

thank you, I enjoy building them

[@bryanclark5805]

so cool that you can bite it and hear. that's the best way to listen to something that you want absolutely no one hearing! lol

[@NFGprometheus]

Bryan Clark like porn >:D

[@preddy09]

Bone conducting headphones are available and pretty cheap, just don't expect them to be comfortable or audiophile material.

[@PlayNowWorkLater]

Still discovering projects you’ve done from ages ago, that are so awesome.

[@st.charlesstreet9876]

Absolutely Amazing! Never knew this and appreciate the demonstration! 🎉

[@SuperPN1]

Awesome! Somehow just seeing this now 9 years later. Hope the years have treated you well sir thanks for this

[@NateD77]

If every science teacher would teach like Bruce we would have a lot more great STEM professionals in the upcoming generations.

[@dansanger5340]

Very cool. Another very cool speaker is a plasma speaker, where the sound is generated by a continuous electric spark.

[@geronotefour3983]

Dan Sanger Yes, some 50 years ago I played with amplifiers connected to a automobile ignition coil. Producing a tiny speaking spark. Also the spark generated at the "antenna" of a badly tuned ham transmitter ! :-)

[@webbot15]

This video is fascinating and really cool! I was so worried you wouldn't feature "good vibrations" though. Glad to hear it at the end!

[@YeanyScience]

Had to, it's my favorite beach boys song

[@sciencedavedunning3415]

Very impressive ! I'm going to build such a speaker and see if I can drive it with a microphone made of a balloon that vibrates a pencil lead against a razor blade. This is just the kind of challenge I like. Thanks, Bruce !

[@heyeahlikely62]

Love your channel, so many tangents to go off of and plenty of intriguing things to pass on to my nephew for his science fair and curiosity. Thanks! Keep it going!

[@bentonquest6567]

He is a good physics teacher, and I have had a few, i'm a retired mechanical engineer.

[@quoththeraven3985]

great videos Mr Yeany. my children are really into science now. and they think I'm a genius. thanks for making science fun.

[@aatishbai9494]

i m electronic technician ur domestration is awsome i have never seen such good video abt electronic on youtube..u r doing good man

[@hunn20004]

MAGIC! Kill the warlock! but seriously, it really blew my mind that you could do that, it makes sense too.

[@ildesign]

This is great! Thank you for making the video. I'm going to do this with my boy. He'll enjoy it.

[@ZzzRoofus]

And I was gonna spend $200 on my old car to replace the speakers.....

[@therestorationofdrwho1865]

Adam S XD

[@ElindorBG]

200 O_O you serious ? what kind of damn speaker is that ....

[@djnazgra]

i spend 250 eur on my speakers.. so nothing special 200$ just good speakers

[@ElindorBG]

Matīss Nazgra I am Bulgarian ... here 50 $ is the top of the line ... xDD

[@djnazgra]

Марио Петров im Latvian ('. ')

[@florisvanhoof]

the motor singing "I get around" and the plate singing "good vibrations" blew my mind

[@ewauvwas]

HELL YESS another great video!!

[@YeanyScience]

thanks ewauvwas

[@bushanashashi5816]

it's awesome.

[@briankh4284]

I actually tried this when I was 13 years old. I was sooooo happy and proud of myself.

[@AiOinc1]

That's a good choice of music you got there! None of this modern rap rubbish!

[@edwardcarlton]

This is absolutely stunning.

[@braydenbledsoe3252]

What is this wizardry?

[@noahlankford1]

I love how the song is Good Vibrations! Nice touch my man

[@damienmccue2793]

serving food on those plates at a restaurant could be a thing

[@fuckoff4098]

Damien McCue but as a subwoofer

[@BenJaminLongTime]

if they dont mind their food splattering all over lol

[@kLuMzyOwl]

I doubt the vibrations would be that violent.

[@BenJaminLongTime]

if the vibrations aren't that violent you need a bigger motor until they are

[@vikasgaur6075]

I deserved this type of teacher back then 😢

[@carlislenightingale8853]

i want a iBiteOnStick instead of Earphones

[@bartnieuwendijk1024]

Yeah, me to

[@infamoussquire2955]

What a wonderful idea! I wonder how different materials would affect the quality of the sound, perhaps an idea for another video even! great video

[@DoNotPushHere]

...and I thought the inertia of the motor's core would ruin the sound...

[@biancab.4944]

This is amazing! I didn't know any of this. I'm just trying to figure out how to get ahold of some button controlled vibrating speakers to insert into a toy, but stayed for this because it was fascinating.

[@PlayToDIY]

simplemente genial, una duda se puede conectar a cualquier amplificador?

[@YeanyScience]

Es necesario utilizar un trong amplefier suficiente para alimentar los altavoces de tamaño regular . ordenadores y dispositivos portátiles de música con auriculares no son lo suficientemente fuertes .

[@seededsoul]

First time I've seen this configuration for a motor, great thinking.

[@seededsoul]

How powerful is the amplifier?

[@MateusHokari]

Nice video! An idea to better vizualize the sound waves is to pour a little bit of water in the plate, have you tried that?

[@YeanyScience]

no I haven't, thanks for the suggestion

[@0987-t4f]

MHz will. determine vibration pattern

[@SteveFrenchWoodNStuff]

I would have never thought to try a motor. Brilliant!

[@hugoelec]

Bone Headphones!! Wow So easy never thought of that I will think more before trow out any small motors now

[@YeanyScience]

every time I try it, I am amazed

[@hugoelec]

Bruce Yeany I'm thinking about making a smoking pipe that work on this phenomenon. Instead of smoking, it can receive Bluetooth sound from cell phone

[@awesomegaming8617]

Now that's unique! Don't see that everyday.

[@ellesmerewildwood4858]

Speakers out of plastic plates, brilliant ! But can you fix the Minnow ?

[@kaedeschulz5422]

And that's how the servo subwoofer was born :D Amazing!

[@davidm.johnston8994]

Now you know how to surprise your friends by serving them food in a singing plate!

[@BakerSTEMLab]

I just watched this video again. So clever and so cool!

[@Neumonics429]

THAT IS AMAZING!!!

[@f.jideament]

Not as much as Kermit.

[@brianhbinesh]

I wish I had you as my science teacher growing up. I love science

[@BrainstechKnowlogy]

nice!

[@emstudios14]

I love this creativity, very soon we will have HD speakers entirely built from special ceramics/meterials and a tiny less power consumption dc motor. Indeed nanotechnology will soon play a role in audio productions.... Thumbs up Sir.

[@G56AG]

If you are old enough you might remember when Lucy Arnez claimed on Johnny Carson's Tonight Show she was receiving radio stations on one of her fillings. LOL

[@MichaelRabbitBass3]

G56AG that was the first thing that came to mind.

[@USMiner]

Thanks for making, I love vids like this, I like to imagine that someday I find myself and friends in a dire situation where music MUST be played and I think back and remember watching this and save the day.

[@Kenabukanyo]

Cheating at exams buy placing a bluetooth device that vibrates in your mouth so only you can hear it . That would be a great invention .

[@theshuman100]

pretty there are teeth implants for death people. Pretty sure there are detachable and you could probably rig it to receive bluetooth.

[@deineroehre]

Roughly 10 Years after uploading this video youtube reccomended it. These "speakers" do lack bass, but what would you expect from a plate... Nice demonstratrion anyways, this will work with basically anything inductive or even some lose wires in a light bulb facing some magnetic field.

[@harrykim5111]

Just imagine putting a mini speaker in your mask and bitting on to it during am exam for a test

[@angelsmith1761]

The perfect Moving Iron Speaker (Reed Loudspeaker ) for my single vacuum tube regenerative homemade radio! Gracias!!!

[@eye2eye899]

I made the biting one and watched rest of the video using it

[@vickielawson3114]

Thumbs up for using the Beach Boys!

[@vickielawson3114]

Shoulda used Good Vibrations, though! ;)

[@AzeShorts]

some rich company should make a sound cigarette thing no sound leak at all

[@two_tabz2557]

I wish I had a teacher like you

[@AtlasReburdened]

I never would have guessed that you could drive the core at that high of frequencies. I was expecting a mechanical low pass that would struggle to output 100hz. Curiouser and curiouser.

[@FB0102]

Atlas WalkedAway same here. Plus the long, heavy wood stick would make it worse

[@anomalyp8584]

Holy shit, my mind was actually blown by this! Insanely creative

[@jadekayak01]

thats great stuff

[@virginiadalcastene8171]

Bruce. Your videos are so interesting!. I amazed!. Thanks for so much fun !. Sincerely. Pablo from Argentina.

[@YeanyScience]

HI, thank you Pablo

[@Zucadragon]

Wow, this was really fun. So, with the stick in your mouth, how clear do you hear it? Because man, I am so making one of those and showing it off, people will be like "What the hell?"

[@YeanyScience]

it is so clear you will be amazed!

[@Zucadragon]

Oh man, that is exactly what I wanted to hear!

[@jffqnn]

This is the Best by far, Instructional Video I have seen yet!! I have to make one of these just so I can see my Nephews and Nieces Reaction when they bite down on the Dowel, I'm sure it will be Priceless!! I grew up listening to the Beach Boys and the Beatles, of course I was only a 1961 Baby so by the time I discovered them, The Beatles had already broken up. Ah Yes, the Eight Track Days, I got really good a fixing the Tapes after a while. Thank You for Your Video, Science is the best!!

[@YeanyScience]

HI Jeff, I was a 1954 baby so I have a few years on you. It was a great time for music. I was a cassette tape fan, also needed repairs on a regular basis. I still have most of them and play them on occasion, also still play my old records, somehow them sound better than my iPod even with all the scratches. thanks for your note.

[@jffqnn]

Hello Bruce, My sister was born in 1952 so I was introduced to the Beatles by Her but the only song she liked from the Beach Boys was Good Vibrations so I'm not sure how I come about listening to them. Yes, the Old LP's LOL, I don't think the kids of today even know what an LP is, or a 45, in the sense of Music that is. Used them all the way up to the 90's myself, I couldn't afford the CD Players when they first come out. WHen I finally transitioned to CD's it was well into the 90's, until then it was Cassette Tapes. Thank You Bruce for the Informative Video, I still can't wait to see the little ones faces, I'll have to get video so I can save the looks upon their faces when they start hearing Music inside of their heads!! It's good to meet you Bruce!!

[@FuskyTheHusky81]

now it would be cool if you made a suspension system so that the speaker could move more.

[@xxwimsleezyxx2161]

yes

[@FuskyTheHusky81]

The Confederate Flag now that i think about that you would be get much less of a hogh range but more lows lol

[@hippopotamus86]

Speaker? There are no speakers in the video.

[@FuskyTheHusky81]

Joe Anthing im just using it as a term not as it it was a speaker.

[@hippopotamus86]

Fusky The Husky a term for what?

[@flash001USA]

Very nice concept with the. little DC motor.

[@alexc8453]

now I want to use a stick on a motor instead of earphones - no chance of people overhearing

[@princequestly2218]

Fantastic demonstration.

[@charliefaxbucketeer1343]

If I use bigger motor, does it make very loud?

[@YeanyScience]

I would think so but haven't tried it

[@yuyutsupoudel3510]

charlie boccaccio if u use bigger motor sound wont increase because bigger motor needs big power..so if u use high voltage (sound amplifier) then only sound will increase

[@JustWasted3HoursHere]

I would think that the more "travel" the plate/disc has, the louder it would be, since it would be moving more air per vibration (Look at a giant woofer when the volume is high). Of course, this requires more energy. JW3HH

[@wayanwinada6443]

charlie boccaccio little bit, better find an other stuff that more vibrate than the plate and put it in a box . Just example. Try it

[@Drachenfang]

I just gutted a set of walmart speakers and got this going. I love the look of amazement you get when you touch the stick to a cup and my students hear sound coming out. Thanks for the video that got me rolling. :)

[@YeanyScience]

excellent, glad I could help

[@johnbeauvais3159]

Would this work with something as small as an mp3 player? I want to make a Foxhole radio that plays WWII era music and BBC radio reports

[@justingort1]

you could if you could amplify the signal from your mp3 player. there are plenty tutorials online showing you how thats done.

[@johnbeauvais3159]

Justin Gort Thank you, I want to hide this under a wood board so just the wires are coming up from the radio set.

[@MrJonnyp107]

John Beauvais if you do John make sure you upload it mate.

[@johnbeauvais3159]

MrJonnyp107 Gladly, I got this idea after seeing a couple sets online and thought how cool it would be to have a radio fashioned with a safety pin a pencil and a razor blade. Then make a speaker using an old ration tin and other bits a soldier could acquire in the field.

[@huntersnoeberger7706]

Finish it yet.

[@gaellafond6367]

A speaker made with a small electric motor! That's brilliant, I have to try it :D

[@PistolSwitches]

this is so fucking cool

[@jeffmassey4860]

Shades of Tom Danley! He started Intersonics back in the 80s or so,making subwoofers from computer tape drive servo motors. Today,he runs Danley Sound Labs,fitting Stadiums with cutting-edge speaker systems that are AMAZING!

[@samissa9921]

how's the bass?

[@FSXgta]

there is no bass with this lol

[@bangla-sydney]

Great demonstration!

[@nimbel]

And this is how chinese speakers are made

[@bpradana]

You're so good at explaining this

[@jaredmutia9703]

How's the bass on this thing?

[@YeanyScience]

not very good, I'm trying some other versions and will post if they work

[@AltriusCodes]

Bruce Yeany hey nice to know your still replying to your older vids I was thinking of making and selling some of these at Christmas time any ideas of cheap strong bases and motors?

[@YeanyScience]

I bought these toy motors online at Kevlin Educational, $1.25 apiece

[@AltriusCodes]

Bruce Yeany thx and damn that's was quick I'm impressed by your commitment to your channel 10/10 from me 😂

[@jaredmutia9703]

thanks for the reply mr bruce.. where i live most science teachers dont know what they're talking about

[@ЭдуардСамойлов-б9т]

Fantastic! Very Good Speaker!!!

[@josephdlist]

What kind of amplifier do you use?

[@TeachUBusiness]

Joseph List I was wondering that too. I am going to try a crappy mp3 player. Cut the ear buds odd...dead anyway, and connect the wires to a super small motor. Should have enough power to push sound if the motor is small enough.

[@karoliskazlauskas1213]

Chris Reich i have a lepy 2020a and the motor did not spin at all it worked like a speaker actually

[@llauoylliklliwi970]

Chris Reich you could add transistors to make the signal louder

[@steventhehistorian]

A stick as a speaker... this just blew my mind.

[@hziebicki]

what are those alligators connected to then?

[@justastream8522]

Hubert Ziebicki Phone, mp3 player, whatever stuff that can play sounds I guess

[@hziebicki]

Speaker wire or how?

[@justastream8522]

Hubert Ziebicki yup, with the green jack, but again, I'm just guessing ^^ perhaps someone with more insight in that matter could give a more consistent answer

[@hziebicki]

hmm, interesting

[@Nixola97]

Those are connected to an amplifier, which is in turn connected to a sound source (the 3.5mm "green" jack).

[@djfmitv]

This makes so much sense - pinching myself it was that simple a concept. Good video :)