I love it! Reminds me of the 10W surface speaker I used to sell at Maplin. We used to play with it and put it on our foreheads and open our mouth and the music came out. Great fun. Actually sold a few with that demonstration as well much to everyone's surprise :) Well done mate.
Absolutely love your work, more power to you, one of the most exciting platforms on the net today. You're an inspirational teacher. All the best from here in Australia
I'm so glad I found his channel, I'm surprised I've never stumbled upon it before I did several months ago. Not only are all his videos rather inspired, he's genuinely happy an excited about what he does (which is infectious), and he's truly prolific in content production. And not boring or repetitive content either. He's the Terry Pratchett of TH-cam
The reality of our shared global situation is that our electronic engineering geniuses have been wrongfully denied their rightful place in the history of mankind's evolution of engineering design,creative imagination and expansion of the Learned understanding of the nature of power given the elements of the thus far understood Universe. Only in the last century the discoveries made by the likes of "Nickola Tesla" a direct link harking back to the time of "Merlin" and the "Alchemists" let alone "Leonardo Da Vinci" were inspired by the "Natural Order" have been stifled by military institutional maintained division. To this day the established power of the economic market exercise resists,kicking and causing much blood curdling screaming having to be dragged forward by the bloodied noses of self serving political ambitions at the behest of the people en masse as the global population grows the people's needs expand. It's high time the very many genius discoveries and breakthroughs made by our electronic engineering geniuses were given greater say and rite of way. The entire argument regard energy supply is of course the classic case study predominant. The entire System needs to change the cost of said monumental shift should hold no political weight whatsoever. Gold according to true leadership of the Higher Order is known (Rumsfeld) not to be the true asset. The truest asset is the people's well being, the one part denied the people culminating in these very hours in the terrible form of non belief in leader's and or their agendas. Anyway, I sit here abandoned to the side of the road struggling to survive in an old jalopy of a combustion engine powered vehicle in Australia,the land of the "Tall poppy" syndrome,my life torn to shreds because I advocate on behalf of justice in the interest of "All creatures great and Small" and the preservation of "All lives matter" throughout the Universe. How I love the scholars of the earlier century their children whom rose with such confidence and conviction as the great student body pouring themselves out of our pioneering universities as the global movement that is the sixties revolution. Even they are still not considered worthy members of our society by "Law" no thanks to the presence of such corruption the manifest of so many flawed and false moralising policies. But to quote a Great voice of the last century, I "shall never surrender" and so I battle on believing in hope. As I mentioned,more power to ye, and how I miss having a workshop that I might work alongside. All the best once again from Here in West Australia. "United we Stand"
My dude,, you shouldve seen 'tech ingredients best speakers' where he explains the optimal placement of such sound-bugs.. really like your videos and stay awsome
Of course it works the other way around too. You can create a large microphone by amplifying the signal from the inductor. It's a beautifully simple bit of kit though, and should raise a smile on anyone's face.
I recall seeing some videos on these where they tried to find the perfect materials and placement of the exciter to achieve the best sound quality. I don't recall much about the materials - I think because it turned out a wide assortment worked well enough for my tastes that I figured I could just experiment with ANY scraps until I found something I liked - but I do recall a bit about the shape of the material and the placement of the exciter. They cut the material into a "golden rectangle" (roughly 3 x 5) and applied the "golden ratio" to place the exciter, at the first internal intersection after defining the two largest squares contained inside the "golden rectangle". Supposedly, this reduced harmonic interference of the sound waves as they vibrate through the medium. It's hard to explain in text, but for anyone wondering what I mean, look at a golden rectangle dissected by two lines into the first two inner squares. The placement would be at the internal T intersection of the two dissecting lines.
@@MarcelLENORMAND Thank you!! I believe it was!! Although now that I browsed through and watched their "World's Best Speaker!" episode, it looks like I left out a lot - they actually use multiple speakers for best results, with a mixture of square/rectangle speakers, some using the "golden ratio" and some dead-center, to take advantage of the different acoustical properties of shapes/materials. It's over a 40 minute video but worth every minute to watch. Combined with Robert's method of making a DIY exciter/actuator, I'm anxious to give this a try. All the materials are dirt cheap, and the sound seems impressive!!
dayton makes a great little audio exciter from 5 - 10 bucks 4-8 ohms that replicate sound as good as high end speakers I have a pair of DAEX25FHE-4 ohms that given the right material ( I found honeycomb cardboard perfect) can give excellent sound.. I use the cardboard because it resonates both the high and low tones very very well.. I do like your little easy and fast what to make sound though.. cost less and you can hear the sound well.. but for sound freaks those daytons can not be beat.. there is also a formula you use to get the best sound but any one can find it on the tube.. thanks Rob..
I seem to remember that double glazing (or at least expensive double glazing) used to have a vacuum between the layers, although I suspect that's less common these days. But that would be wonderful for this, because it would be inaudible outside if it truly was a vacuum between the glass layers. Vacuum obviously being the best at reducing heat loss
Some units use a vacuum and some use inert gas, usually Argon (some use Krypton which is more efficient and has the added bonus of stopping Superman from flying through the window!) I did hear about research being done on a solar window which uses the photo-electric effect but I don't think they have cracked it yet (some pun intended) They have developed the photo-cathode side but are still working on the collector side, looks promising though
@@sofa-lofa4241 well a krypton superman stopping window sounds like a good idea :) I think what would be nice rather than a solar window, is some kind of peltier effect window, using current generated from the sun and the heat on the outside to sightly cool the inside.
If the two panes have a vacuum between them, there would be 14.7 pounds per square inch pressure on the outside. Each square foot of glass would have 144 sq. Inches times 14.7 or over 2000 pounds of pressure! I don't think an ordinary window pane could handle that much force!
@@acmefixer1 you haven't tried it have you mate? - I say this because I have tried - but hey - maths is awesome stuff for convincing you to do nothing lol - I am joking there - obviously - love your calls but it is not a guide here
This is a good example where a technical man can do so much, with so little. It is inspiring as well. Can vibrating surfaces , at certain frequencies, be self sterilizing ? You can sterilize surfaces in hospitals, simply by attaching a small device. Furthermore, can you create a covid19 active mask, that self sterilize by vibration? If i reverse the device function, turning sound into physical vibration, using a microphone amplified into this device, can deaf people learn to listen by touch, such device attached to thier skin? This gentlemen always give me inspiration.
Acoustically, for best overall sound balance, the best position in which to place the transducer is about ⅓ to 1/5 of the distance from two adjacent edges of the resonator panel. It's also useful to give a large radius to the panel corners, if that is possible. A radius of 10 to 20% of the panel size is acceptable. If you only want loudness, and are not worried about multiple audio peaks, put the transducer in the middle of the panel. If you want better low frequency response, use the biggest panel you can find, such as a large window, door, ceiling, an uncarpeted floor, or a wooden wall. A panel which is about the size of a monitor screen will not really be able to reproduce sounds below a couple of hundred Hertz efficiently, but it will be fine for the spoken word (roughly 300 Hz to 3 kHz). You can hang a loose panel by thin supports, adjacent to a wall, or from a ceiling. Ordinary false ceiling panels work pretty well, and they can be disguised as a part of a ceiling, if you wish, Commercial speakers using those simple guidelines often sell for hundreds of pounds per set.
That works well. Try the tiny beep speaker on a motherboard. Just cut the case at the sound side. Then glue the metal wafer to glass or metal. Wiring it to headphones is easy and it sounds like hell, BUT it is fun for the bored days. Good show Robert. :-)
Hi Robert, does it matter which way round you put the magnet on the glass. Also i could not tell how you put the band on the inductor? Thanks in advance
If you use it for an outdoors speaker, the rubberband might desintegrate, you can use rubber strips used for grafting, they are UV stable and meant for outdoors use and you will have a nicely hidden garden speaker that will last for ever. Those things will set you back at least 40 euro if you try to buy them.
I just joined for the exclusive content because this guy really deserves an income for all the really helpful and interesting videos he makes, but I just realised I now get an icon by my name like you have. I was wondering if that bothers you? I don't want one. I just want to support him, and maybe glean a little more insight from the paid for videos. I don't like that TH-cam has these icons and they change over how long you've been a paid subscriber.
@@claytonmccormick622 I worry it'll lead to, like everything else over time, a sense of elitism and somehow being better than others. Which is truly an antithesis of Roberts general message. I want to support him, but I don't want these badges
What if you used strips of those on those as the blade for a VAWT? Would it turn? Could it work backwards? Could wind blowing over the glass or loud noises make the glass vibrate and cause the sound bug to generate power?
Sounds good. Many of the commercial ones use magnetostriction with a special alloy called Terfinol-D. I wanted to get some of that alloy, but it's hard to find. If you do find it somewhere, it's really expensive
I haven't even watched this one yet and I'm wondering if you've tried it for rapidly dislodging gas bubbles from electrodes in electrolyzer applications to increase the Hydrogen/Oxygen yield...
Brilliant but that music/annoyance would have to be accompanied with safety goggles:) polystyrene seems to have amplifying properties,if there were four coupled with a tone generator would lift be generated?
I wonder if you could modulate an electric jackhammer's signal to make street repairs more interesting? It seems to me that is not dissimilar to what the electro magnet is doing. Probably have to choose some very bassy low frequency music for the jackhammer though.
Yet another great project to try out. I am keen on trying this one... and see if it also can generate electricity from vibration caused by wind and road noise similar to the wind generator.
So are do you just connect the + / - wires from the amp to the 2 leads on the inductor? I'm trying to understand exactly how this is working and am picturing the voice coil on a speaker that moves the cone. The coil moves in and out due to the permanent magnet field surrounding it (b/c of the magnet) but the coil is powered by the amp (the voice coil is acting like the inductor in this demonstration). So is the inductor just moving back and forth the same as the voice coil using the rubberband as the "range of motion" limiter? If you fed enough power into the inductor, could you make it jump off the magnet with a single pulse? I'm picturing remaking Tesla's earthquake machine. This would be very interesting to find the resonate frequency of things. You should try doing this on a piece of glass. Try different frequencies until you find the resonate frequency and then show how little power is needed to break it.
yep and it doesn't matter which way - basically the mass of the inductor has inertia and is repelled and attracted to the permanent magnet in time to the input way but that leads to transfer of that inertia through the rubber layer with a phase shift - or at least that's what I think
@john beach in theory we can hear as low as 20hz, but unless the amplitude is really high you wouldn't notice much until the frequencies you mentioned. You'd probably feel it more than hear it anyway.
Very cool Rob. You could do I nice little trick and put on on the bottom of a pint beer glass and have a wireless amp and play a very nice little trick each time they take a swig .
BRILLIANT, now what about inducing different frequencies into the HYDROGEN CELL PROJECT? Could you present a resonate frequency of H20 to the plates and split the molecules easier?
Robert a few weeks ago I bought a guitar from the flea market which I named "Five" because that's what I paid in Euros! Only one string missing! Got it home and restrung it. Tonight I managed to tune it using a free Android app and it sounds great. My next challenge is a piezo electric microphone to attach to the body. I have seen links. How would you approach this?
the real challenge here is going to be the electronics not the physical sensor - loads of things will work but what will trouble you as a musician, I imagine, is the fidelity of the reproduction and though you will pick up the responses from just about any transducer cleaning up the signal, cancelling the noise and outputting it cleanly will be the challenge
Rob Imagine Titanium Fibre Woven Like Gore Tex ? Waterproof , Fireproof And Virtually Indestructible . That Cloth Would Last A Human A Complete Lifetime
what about using silicon rubber compound (like the window sealant made by General Electric called Sillicon Advanced that replaced Silicon II? Also if you were using something that is either a putty or liquid, would you chose a different shape other than just a flat layer of flexible material? (like how woofers or bass speakers are drastically different shape and much less stiff (more range of movement) than say a tweeter? Just asking since I am assuming this is a way to make this with stuff around the house, or shop and it always seems like I end up with silicon in my tubes that goes bad before I ever get around to using it, (so much so that I am actually going to try using one of the solid tubes I found in there recently causing me to buy ANOTHER tube, that I am going to test every solvent I have to see if any of them will enable me to break it down with the added aspect I am looking for obviously that it turns back into a decent solid rubber when it dries out of it I say that because I know that MEK and the substitute for it, does NOT do this second bit to PLA for printed parts, instead it just get soft making it cuttable more so than before but the outer layer of the PLA is VERY crusty and brittle falling apart when it dries out LOL, not sure if this is a chemical reaction, with no way to reverse it, or just because the stuff dries too fast like how Acrylic monomer added to dissolve acrylic (*or acetone used on some paints) causes it to look more like frosted crusty junk and will fall apart into dust completely unless it is SUPER thick, same with styrofoam peanuts dissolved in acetone, mean while when I used pure xylene to dissolve the peanuts, and painted it onto things, it dried to a super clear glossy surface like a professional paint job on a can with a coat of wax on top, or something, and it took far longer to dry, so I am guessing the way they get matt paint is to add more fast drying monomers to that mix vs the glossy stuff getting more slow drying monomers, anyway enough of me gassing on lol) *this is just an aside that I am mentioning because if you are using it, for your membrane, it might make using it easier since it is info that might allow controlling the consistency instead of just getting stuck with what comes out of the tube as far as how thick or malleable it is before it is cured (was actually quite good and was able to be thinned by mixing xylene like you get in the paint section for thinning some paints) then they changed something and it was not quite able to be thinned that way anymore, and I recall a friend who used to use toluene to thin regular silicone like the clear calk used for windows and the like and when they tried the same toluene with silicone II it did not work
the stuff I was, as you say waffling on about, I may have to do a decent video on, with examples, and of course just before and after shots since I dont have a way to do time elapsed video yet, something I want, just not gotten around to, (as it is I will probably have a time elapsed video system for electron microscope shots from my home built unit long before I get around to a basic video camera or even some sort of stitching digital photo system LOL)
Hi, I would like if you did something about refraction using dissimilar materials. I am interested in what happens when, for example, I stack plastic on glass or glass on plastic. And what happens when I add a third layer. I think optic would be interesting too, but I will understand if you have other plans.
The Green Orbs have a channel in which they perform that music, and various other compositions, some of which are for children. All available, royalty-free.
Hello sir, i tired it with 1mH inductor and a sound amplifier circuit but, it didn't work. The amplifier circuit is fine, the magnet is strong and the rubber band is thin. Can you please help me rectify this?
Awesome thought provoking information as always Robert, gonna try this tonight. would love you to do a tutorial sometime of how to make an EMP jammer device from old scrap electronics, i've tried but struggling to understand how it works, and how to improve it and the science of coil winding's, you explain everything so well, i wish i had made a career in this field, it's so interesting, i think once i get a good understanding of circuits and components and how it all operates, i can start being a bit more creative. cheers.
How about the same concept to make electricity by attaching it to a window facing a busy street and storing the created power in a capacitor array or something like that? We live on a busy street and the yard front fence could be replace by glass for this purpose it maybe more effective than solar panels so sound panels used instead.
Great fun, just been re sticking my rear view mirror back on. Now I know what to do with the remainder of the adhesive kit ,will prob be strong enough for a large magnet and coil.☺👍
cool, i bet you could adapt that to the exterior of car doors & make a speaker for picknics, or hang a sheet of almost anything next to an exterior door & speak to or mess with people knocking on the door..
Might divide the glass by prime numbers in the x and y using different primes for each. You'll get a flatter freqency responce for a slightly better representation of the actual music.
lol - I didn't - you would probably do a better job and get better reproduction if you did - but just about anything will work and matching the impedance will work even better
What if you didn't want actual sound just the sound in a signal or wavelength so you can listen in.. Something like the famous bug found in a high gov't office during the cold war. How do you get a passive bug to resonate when stimulated and broadcast without radio or sdr. I can easily look it up I just would like to see what you do with that concept. Old news but still cool.
could you use this idea the other way around, the way you showed how to generate electric from speaker magnets. could enough of these bug be used on say a bicycle fenders to charge a battery.
Robert is there any way you can show what you did on the camera, instead of doing it away from it and then saying VOILA.. It's no use if we cannot see a demonstration. Informative video but...
fascinating. Robert can you do this one i found out as a kid about 45 years ago small 3v dc motor attached to a headphone lead play music and touch the shaft of the motor on your teeth it's amazing
Awesome I am definitely going to try this soon. I think you deserve a nickname. Mr magic man is my vote. Ive been working hard to which has slowed my progress in the lab but is giving me more income to get some bits I need. I love that jingle on how to videos
Good stuff, as always, Robert. :) I think it would have been improved a bit if you'd shown what you're doing from 2:10 to 2:55 actually in the frame of the camera's view, though, instead of out of frame/view.
@@werxeh8027 check out the Tonewood amp, clamps to the back of an acoustic guitar and resonates the wood with the pickup signal, its impressive and same tech.
Lol Two thumbs down no doubt from speaker companies! Haha! Thanks for the cool vid Rob! Think I might just have a go at this with my parents 4'x8' windows in their living room! Obviously with larger inductors though. lol
You make great and interesting videos. But in this one I couldn't see what you were doing to assemble it. Even a simple picture would tell me how to do it.
lets stick a hundred of these inductors on the bonnet of a car and produce tons of altenrnating ac voltage recified by a full bridge diode and used to charge another battery!!
oh mate - there are lots of people and everyone finds something different in things. Quite a few folks found the last video useful and not the least dead end. I am sorry but all I read when I read what you wrote is you didn't find it useful - and well that's ok
Oh dear God! Not that tune!!!! Litteraly the audio in very horrible TH-cam video ever. Well, at least I know where it's from now. I'll go there to avenge my ears.
I love it! Reminds me of the 10W surface speaker I used to sell at Maplin. We used to play with it and put it on our foreheads and open our mouth and the music came out. Great fun. Actually sold a few with that demonstration as well much to everyone's surprise :) Well done mate.
Absolutely love your work, more power to you, one of the most exciting platforms on the net today. You're an inspirational teacher. All the best from here in Australia
I'm so glad I found his channel, I'm surprised I've never stumbled upon it before I did several months ago. Not only are all his videos rather inspired, he's genuinely happy an excited about what he does (which is infectious), and he's truly prolific in content production. And not boring or repetitive content either. He's the Terry Pratchett of TH-cam
@Leave means LEAVE! UK As Well
Blessings Y'all
Wow, thank you mate
awesome mate!
The reality of our shared global situation is that our electronic engineering geniuses have been wrongfully denied their rightful place in the history of mankind's evolution of engineering design,creative imagination and expansion of the Learned understanding of the nature of power given the elements of the thus far understood Universe. Only in the last century the discoveries made by the likes of "Nickola Tesla" a direct link harking back to the time of "Merlin" and the "Alchemists" let alone "Leonardo Da Vinci" were inspired by the "Natural Order" have been stifled by military institutional maintained division. To this day the established power of the economic market exercise resists,kicking and causing much blood curdling screaming having to be dragged forward by the bloodied noses of self serving political ambitions at the behest of the people en masse as the global population grows the people's needs expand. It's high time the very many genius discoveries and breakthroughs made by our electronic engineering geniuses were given greater say and rite of way. The entire argument regard energy supply is of course the classic case study predominant. The entire System needs to change the cost of said monumental shift should hold no political weight whatsoever. Gold according to true leadership of the Higher Order is known (Rumsfeld) not to be the true asset. The truest asset is the people's well being, the one part denied the people culminating in these very hours in the terrible form of non belief in leader's and or their agendas. Anyway, I sit here abandoned to the side of the road struggling to survive in an old jalopy of a combustion engine powered vehicle in Australia,the land of the "Tall poppy" syndrome,my life torn to shreds because I advocate on behalf of justice in the interest of "All creatures great and Small" and the preservation of "All lives matter" throughout the Universe. How I love the scholars of the earlier century their children whom rose with such confidence and conviction as the great student body pouring themselves out of our pioneering universities as the global movement that is the sixties revolution. Even they are still not considered worthy members of our society by "Law" no thanks to the presence of such corruption the manifest of so many flawed and false moralising policies. But to quote a Great voice of the last century, I "shall never surrender" and so I battle on believing in hope. As I mentioned,more power to ye, and how I miss having a workshop that I might work alongside. All the best once again from Here in West Australia. "United we Stand"
You're definitely the man for our time Robert. Wouldn't miss a minute. Great stuff! Thanks...........
lol - cheers mate
Dude, the quality is impressive and better than eventually commercial ones. Great job
My dude,, you shouldve seen 'tech ingredients best speakers' where he explains the optimal placement of such sound-bugs..
really like your videos and stay awsome
I'll check it out - cheers mate
"Thank you very much for listening" haha. Superb sound quality, was expecting tinny and low volume!
lol - cheers mate
Of course it works the other way around too. You can create a large microphone by amplifying the signal from the inductor. It's a beautifully simple bit of kit though, and should raise a smile on anyone's face.
He made a video about this a few days ago, regarding wind power generation without mechanical moving parts
2 weeks ago, I have definitely lost track of the days, th-cam.com/video/Nj3pH95aMOQ/w-d-xo.html
it would mate - what this really came from is I am looking for a cheap way to make the blade generator
now then lol - very clever mate - well seen
@@werxeh8027 Yes, I've seen it. I'm a bit of an addict to this channel, but it's hard to keep up with his prolific output!
I recall seeing some videos on these where they tried to find the perfect materials and placement of the exciter to achieve the best sound quality. I don't recall much about the materials - I think because it turned out a wide assortment worked well enough for my tastes that I figured I could just experiment with ANY scraps until I found something I liked - but I do recall a bit about the shape of the material and the placement of the exciter. They cut the material into a "golden rectangle" (roughly 3 x 5) and applied the "golden ratio" to place the exciter, at the first internal intersection after defining the two largest squares contained inside the "golden rectangle". Supposedly, this reduced harmonic interference of the sound waves as they vibrate through the medium. It's hard to explain in text, but for anyone wondering what I mean, look at a golden rectangle dissected by two lines into the first two inner squares. The placement would be at the internal T intersection of the two dissecting lines.
That would be Tech Ingredients channel.
@@MarcelLENORMAND Thank you!! I believe it was!! Although now that I browsed through and watched their "World's Best Speaker!" episode, it looks like I left out a lot - they actually use multiple speakers for best results, with a mixture of square/rectangle speakers, some using the "golden ratio" and some dead-center, to take advantage of the different acoustical properties of shapes/materials. It's over a 40 minute video but worth every minute to watch. Combined with Robert's method of making a DIY exciter/actuator, I'm anxious to give this a try. All the materials are dirt cheap, and the sound seems impressive!!
cheers mate
dayton makes a great little audio exciter from 5 - 10 bucks 4-8 ohms that replicate sound as good as high end speakers I have a pair of DAEX25FHE-4 ohms that given the right material ( I found honeycomb cardboard perfect) can give excellent sound.. I use the cardboard because it resonates both the high and low tones very very well.. I do like your little easy and fast what to make sound though.. cost less and you can hear the sound well.. but for sound freaks those daytons can not be beat.. there is also a formula you use to get the best sound but any one can find it on the tube.. thanks Rob..
cheers mate nice info thanks for posting
@@ThinkingandTinkering Always just love your site Rob! This is the place to hang out if you want to activate the little grey cells..
If you do not want to glue to the glass, just put another magnet on the other side.
for sure mate
Brilliant idea.
Thank you for sharing this ingenious idea, was scouting around for simplest vibration speak circuit and your design was perfect!
I seem to remember that double glazing (or at least expensive double glazing) used to have a vacuum between the layers, although I suspect that's less common these days. But that would be wonderful for this, because it would be inaudible outside if it truly was a vacuum between the glass layers. Vacuum obviously being the best at reducing heat loss
Some units use a vacuum and some use inert gas, usually Argon (some use Krypton which is more efficient and has the added bonus of stopping Superman from flying through the window!)
I did hear about research being done on a solar window which uses the photo-electric effect but I don't think they have cracked it yet (some pun intended)
They have developed the photo-cathode side but are still working on the collector side, looks promising though
@@sofa-lofa4241 well a krypton superman stopping window sounds like a good idea :) I think what would be nice rather than a solar window, is some kind of peltier effect window, using current generated from the sun and the heat on the outside to sightly cool the inside.
for sure mate
If the two panes have a vacuum between them, there would be 14.7 pounds per square inch pressure on the outside. Each square foot of glass would have 144 sq. Inches times 14.7 or over 2000 pounds of pressure! I don't think an ordinary window pane could handle that much force!
@@acmefixer1 you haven't tried it have you mate? - I say this because I have tried - but hey - maths is awesome stuff for convincing you to do nothing lol - I am joking there - obviously - love your calls but it is not a guide here
This is a good example where a technical man can do so much, with so little.
It is inspiring as well.
Can vibrating surfaces , at certain frequencies, be self sterilizing ?
You can sterilize surfaces in hospitals, simply by attaching a small device.
Furthermore, can you create a covid19 active mask, that self sterilize by vibration?
If i reverse the device function, turning sound into physical vibration, using a microphone amplified into this device, can deaf people learn to listen by touch, such device attached to thier skin?
This gentlemen always give me inspiration.
cheers mate - and tbh I don't really know the answer to the sterilisation question
No doubt you can tune it to change the frequency response by gluing various sized ballast to the back of the inductor, to change the resonances?
I suppose so mate - well worth experimenting with - go for it
Acoustically, for best overall sound balance, the best position in which to place the transducer is about ⅓ to 1/5 of the distance from two adjacent edges of the resonator panel. It's also useful to give a large radius to the panel corners, if that is possible. A radius of 10 to 20% of the panel size is acceptable. If you only want loudness, and are not worried about multiple audio peaks, put the transducer in the middle of the panel. If you want better low frequency response, use the biggest panel you can find, such as a large window, door, ceiling, an uncarpeted floor, or a wooden wall.
A panel which is about the size of a monitor screen will not really be able to reproduce sounds below a couple of hundred Hertz efficiently, but it will be fine for the spoken word (roughly 300 Hz to 3 kHz). You can hang a loose panel by thin supports, adjacent to a wall, or from a ceiling. Ordinary false ceiling panels work pretty well, and they can be disguised as a part of a ceiling, if you wish, Commercial speakers using those simple guidelines often sell for hundreds of pounds per set.
That works well. Try the tiny beep speaker on a motherboard. Just cut the case at the sound side. Then glue the metal wafer to glass or metal. Wiring it to headphones is easy and it sounds like hell, BUT it is fun for the bored days. Good show Robert. :-)
nice one mate and for sure
Hi Robert, does it matter which way round you put the magnet on the glass.
Also i could not tell how you put the band on the inductor?
Thanks in advance
my dear ole chap i love that song ya play it on yer vids all the time and heres to ya absulty smashing show thank you keep it up
cheers mate
If you use it for an outdoors speaker, the rubberband might desintegrate, you can use rubber strips used for grafting, they are UV stable and meant for outdoors use and you will have a nicely hidden garden speaker that will last for ever. Those things will set you back at least 40 euro if you try to buy them.
nice one mate - 40 euros! - what a rip off
interesting idea , i have always liked the plasma speaker as well:-)
I just joined for the exclusive content because this guy really deserves an income for all the really helpful and interesting videos he makes, but I just realised I now get an icon by my name like you have. I was wondering if that bothers you? I don't want one. I just want to support him, and maybe glean a little more insight from the paid for videos. I don't like that TH-cam has these icons and they change over how long you've been a paid subscriber.
@@werxeh8027 right on mate
@@claytonmccormick622 I worry it'll lead to, like everything else over time, a sense of elitism and somehow being better than others. Which is truly an antithesis of Roberts general message. I want to support him, but I don't want these badges
me too mate
How can we Velcro(or Bluetack) the magnet to the glass with it touching the glass?? Very curious......
What if you used strips of those on those as the blade for a VAWT? Would it turn?
Could it work backwards? Could wind blowing over the glass or loud noises make the glass vibrate and cause the sound bug to generate power?
very good - very nice - exactly my thoughts
Sounds good.
Many of the commercial ones use magnetostriction with a special alloy called Terfinol-D.
I wanted to get some of that alloy, but it's hard to find.
If you do find it somewhere, it's really expensive
this is just quick and easy mate - and gives a nice result
@@ThinkingandTinkering
Good video, I will have to try it.
Thanks for posting.
I haven't even watched this one yet and I'm wondering if you've tried it for rapidly dislodging gas bubbles from electrodes in electrolyzer applications to increase the Hydrogen/Oxygen yield...
that's a good idea mate
Wouldn’t a transducer work better using ultrasound conducted into the plating bath perhaps directly through the plates would work more effective?
Brilliant but that music/annoyance would have to be accompanied with safety goggles:) polystyrene seems to have amplifying properties,if there were four coupled with a tone generator would lift be generated?
Hey Robert that is fantastic. how did you power this contraption?
I wonder if you could modulate an electric jackhammer's signal to make street repairs more interesting? It seems to me that is not dissimilar to what the electro magnet is doing. Probably have to choose some very bassy low frequency music for the jackhammer though.
Yet another great project to try out. I am keen on trying this one... and see if it also can generate electricity from vibration caused by wind and road noise similar to the wind generator.
awesome mate - go for it
So are do you just connect the + / - wires from the amp to the 2 leads on the inductor?
I'm trying to understand exactly how this is working and am picturing the voice coil on a speaker that moves the cone. The coil moves in and out due to the permanent magnet field surrounding it (b/c of the magnet) but the coil is powered by the amp (the voice coil is acting like the inductor in this demonstration). So is the inductor just moving back and forth the same as the voice coil using the rubberband as the "range of motion" limiter? If you fed enough power into the inductor, could you make it jump off the magnet with a single pulse?
I'm picturing remaking Tesla's earthquake machine. This would be very interesting to find the resonate frequency of things.
You should try doing this on a piece of glass. Try different frequencies until you find the resonate frequency and then show how little power is needed to break it.
yep and it doesn't matter which way - basically the mass of the inductor has inertia and is repelled and attracted to the permanent magnet in time to the input way but that leads to transfer of that inertia through the rubber layer with a phase shift - or at least that's what I think
Source for inductors ... and tech specs recommended for good sound range? Thanks very much!
what sound would be played if you attached that into an electric outlet of appropriate voltage?
A sine wave at 50 or 60hz. Probably wouldn't be able to hear it. DC wouldn't do anything, AC worldwide is one of those 2 frequencies
@john beach in theory we can hear as low as 20hz, but unless the amplitude is really high you wouldn't notice much until the frequencies you mentioned. You'd probably feel it more than hear it anyway.
whatever the frequency of the wave was mate - we can only hear between 20Hz and 20kHz and some folks not even that
Very cool Rob. You could do I nice little trick and put on on the bottom of a pint beer glass and have a wireless amp and play a very nice little trick each time they take a swig .
now that would be cool lol
lol - cheers
BRILLIANT, now what about inducing different frequencies into the HYDROGEN CELL PROJECT? Could you present a resonate frequency of H20 to the plates and split the molecules easier?
go for it
@@ThinkingandTinkering I dont have a FWM or amplifier (Traveling). You would probably need more power backing the sound wave
Robert a few weeks ago I bought a guitar from the flea market which I named "Five" because that's what I paid in Euros! Only one string missing! Got it home and restrung it. Tonight I managed to tune it using a free Android app and it sounds great. My next challenge is a piezo electric microphone to attach to the body. I have seen links. How would you approach this?
Basically, one of these in reverse,
Would need optimising for a good sound though
the real challenge here is going to be the electronics not the physical sensor - loads of things will work but what will trouble you as a musician, I imagine, is the fidelity of the reproduction and though you will pick up the responses from just about any transducer cleaning up the signal, cancelling the noise and outputting it cleanly will be the challenge
Rob Imagine Titanium Fibre Woven Like Gore Tex ? Waterproof , Fireproof And Virtually Indestructible . That Cloth Would Last A Human A Complete Lifetime
for sure mate
@@ThinkingandTinkering So How Come You've Got A Lab ? We Have Our Own Pro Recording Studio Called The Lab Here In Birmingham
Bless Up Earthling
what about using silicon rubber compound (like the window sealant made by General Electric called Sillicon Advanced that replaced Silicon II? Also if you were using something that is either a putty or liquid, would you chose a different shape other than just a flat layer of flexible material? (like how woofers or bass speakers are drastically different shape and much less stiff (more range of movement) than say a tweeter?
Just asking since I am assuming this is a way to make this with stuff around the house, or shop and it always seems like I end up with silicon in my tubes that goes bad before I ever get around to using it, (so much so that I am actually going to try using one of the solid tubes I found in there recently causing me to buy ANOTHER tube, that I am going to test every solvent I have to see if any of them will enable me to break it down with the added aspect I am looking for obviously that it turns back into a decent solid rubber when it dries out of it
I say that because I know that MEK and the substitute for it, does NOT do this second bit to PLA for printed parts, instead it just get soft making it cuttable more so than before but the outer layer of the PLA is VERY crusty and brittle falling apart when it dries out LOL, not sure if this is a chemical reaction, with no way to reverse it, or just because the stuff dries too fast like how Acrylic monomer added to dissolve acrylic (*or acetone used on some paints) causes it to look more like frosted crusty junk and will fall apart into dust completely unless it is SUPER thick, same with styrofoam peanuts dissolved in acetone, mean while when I used pure xylene to dissolve the peanuts, and painted it onto things, it dried to a super clear glossy surface like a professional paint job on a can with a coat of wax on top, or something, and it took far longer to dry, so I am guessing the way they get matt paint is to add more fast drying monomers to that mix vs the glossy stuff getting more slow drying monomers, anyway enough of me gassing on lol)
*this is just an aside that I am mentioning because if you are using it, for your membrane, it might make using it easier since it is info that might allow controlling the consistency instead of just getting stuck with what comes out of the tube as far as how thick or malleable it is before it is cured (was actually quite good and was able to be thinned by mixing xylene like you get in the paint section for thinning some paints) then they changed something and it was not quite able to be thinned that way anymore, and I recall a friend who used to use toluene to thin regular silicone like the clear calk used for windows and the like and when they tried the same toluene with silicone II it did not work
the stuff I was, as you say waffling on about, I may have to do a decent video on, with examples, and of course just before and after shots since I dont have a way to do time elapsed video yet, something I want, just not gotten around to, (as it is I will probably have a time elapsed video system for electron microscope shots from my home built unit long before I get around to a basic video camera or even some sort of stitching digital photo system LOL)
worth trying mate but I think you are right - it would be a good video to do
Hi, I would like if you did something about refraction using dissimilar materials. I am interested in what happens when, for example, I stack plastic on glass or glass on plastic. And what happens when I add a third layer. I think optic would be interesting too, but I will understand if you have other plans.
I'll have a look at ti mate for sure
Not sure if you will read this, but have really enjoyed your channel. Question: What size inductor are you using? Thanks and have a great day.
The Green Orbs have a channel in which they perform that music, and various other compositions, some of which are for children. All available, royalty-free.
Hello sir, i tired it with 1mH inductor and a sound amplifier circuit but, it didn't work. The amplifier circuit is fine, the magnet is strong and the rubber band is thin. Can you please help me rectify this?
I was thinking to use this for my motorcycle helmet project do you have any recommendations for the size or type and where to find them?
Awesome thought provoking information as always Robert, gonna try this tonight. would love you to do a tutorial sometime of how to make an EMP jammer device from old scrap electronics, i've tried but struggling to understand how it works, and how to improve it and the science of coil winding's, you explain everything so well, i wish i had made a career in this field, it's so interesting, i think once i get a good understanding of circuits and components and how it all operates, i can start being a bit more creative. cheers.
I'll look into it mate
@@ThinkingandTinkering Awesome cheers mate, appreciate that loads.
How about the same concept to make electricity by attaching it to a window facing a busy street and storing the created power in a capacitor array or something like that? We live on a busy street and the yard front fence could be replace by glass for this purpose it maybe more effective than solar panels so sound panels used instead.
Great fun, just been re sticking my rear view mirror back on. Now I know what to do with the remainder of the adhesive kit ,will prob be strong enough for a large magnet and coil.☺👍
cool, i bet you could adapt that to the exterior of car doors & make a speaker for picknics,
or hang a sheet of almost anything next to an exterior door & speak to or mess with people knocking on the door..
lol - I'll bet you could
Your the BEAST of ShedDIY man!
lol - cheers mate
great idea could it be use as a microphone as well?
worth trying
Can’t find these inductors for some reason
Might divide the glass by prime numbers in the x and y using different primes for each. You'll get a flatter freqency responce for a slightly better representation of the actual music.
awesome - cheers mate
But how did you matched / find its impedance ?
lol - I didn't - you would probably do a better job and get better reproduction if you did - but just about anything will work and matching the impedance will work even better
Thanks for posting Robert, very interesting.
What if you didn't want actual sound just the sound in a signal or wavelength so you can listen in.. Something like the famous bug found in a high gov't office during the cold war. How do you get a passive bug to resonate when stimulated and broadcast without radio or sdr. I can easily look it up I just would like to see what you do with that concept. Old news but still cool.
Couldn't see how they were attached so this particular version/concept remains a bit of a mystery to me, sadly.
Brilliant demo
Definitely one to make.
Nice job Rob.p.s you need a plaster
lol - I don't even remember what I cut it on lol
@@ThinkingandTinkering you must of been having fun. 😊
I was looking at those for a bone conduction earpiece for my sister. She lost most of here hearing in one ear due to a mechanical internal disconnect.
cool - not your sister obviously - cool that you were looking into them
could you use this idea the other way around, the way you showed how to generate electric from speaker magnets. could enough of these bug be used on say a bicycle fenders to charge a battery.
it's not a very efficient charger mate
Robert is there any way you can show what you did on the camera, instead of doing it away from it and then saying VOILA.. It's no use if we cannot see a demonstration. Informative video but...
how about o-rings instead of elastic bands?
give it a go
fascinating. Robert can you do this one i found out as a kid about 45 years ago small 3v dc motor attached to a headphone lead play music and touch the shaft of the motor on your teeth it's amazing
I must give that a go mate - cheers
Super synthetic, well made man! Thanks
Much appreciated!
Awesome I am definitely going to try this soon. I think you deserve a nickname. Mr magic man is my vote. Ive been working hard to which has slowed my progress in the lab but is giving me more income to get some bits I need. I love that jingle on how to videos
Good luck mate
Is this the reverse principle of a Piezo-electric mic, aka contact mic?
pretty much
That was awesomeness thankyou! Looks like you made your self generator/microphone aswell
my pleasure mate
Good stuff, as always, Robert. :) I think it would have been improved a bit if you'd shown what you're doing from 2:10 to 2:55 actually in the frame of the camera's view, though, instead of out of frame/view.
I was trying not to drop th little bits of rubber as I put them on the magnet
@@ThinkingandTinkering Don't cloud the issue with facts, Rob. :p :) Cheers.
@@maintoc lol - fair enough mate lol
"Thank you very much for listening" lol Speaker Jokes
Beautifully simple! I’ll have to try it.
Go for it!
I miss your old videos with that song lol
lol
Same feature is in my lenovo k50a40 but eith ceramic speaker
cool
can you turn it into a microphone?
probably. mate
try using one to shake the brass and aluminum tubes in the generator
nice idea mate
Couldn’t see you put the rubber band on and needed a close up to see it being applied. As only watching in a phone
really? - just stick it between the magnet and the inductor the inductor will be attracted to the magnet and hold it in place
oh my, the possibilities.
I know eh lol
In the thumbnail, I thought you were Gordon Ramsay.
Don't know about Gordon Ramsay, but I'm sure Hester Blumenthal would find a culinary use for this somehow.
really?
Is the process reverseable? What's next? Turn a speaker into anything?? Ha.. Great video,
it would be mate
If I fixed one to my electric guitar I bet I would get some crazy heavy metal feedback cooool
Actually something like this is probably similar to the pickup in electro-acoustic guitars, just with the inverse function
@@werxeh8027 check out the Tonewood amp, clamps to the back of an acoustic guitar and resonates the wood with the pickup signal, its impressive and same tech.
lol
Lol Two thumbs down no doubt from speaker companies! Haha! Thanks for the cool vid Rob! Think I might just have a go at this with my parents 4'x8' windows in their living room! Obviously with larger inductors though. lol
I actually quite enjoy that tune, its always cute and used for cute things typically.
actually me too - and more importantly for me - it's royalty free
that's so cool!
cheers mate
fantastic many thanks
Thank you too!
Really interesting thanks.
Glad you enjoyed it
makes a microphone too.
should do
Could you leave an 'outtro' on your videos so I've got time to hit the like button please?
I'm getting on a bit and always forget while I'm watching 😂
Video can be over and you still can click the like button as long as your video setting is not Auto Play the next video. I turn that off myself.
my outdo is just to thank you for taking the time to watch - but I'll give it some thought mate
I think you are awesome 😎
cheers mate
Point the camera in the right direction, Robby-skins, or we can't see...!
cheers mate - I made this a bit late - I should have been more careful
You make great and interesting videos. But in this one I couldn't see what you were doing to assemble it. Even a simple picture would tell me how to do it.
that's a shame mate - i'll try to do better
Dml speaker
yep and here's a link to describe what distributed model speakers are en.wikipedia.org/wiki/Distributed_mode_loudspeaker
Awesome!!!
Thank you! Cheers!
Wow nice
Thank you! Cheers!
Next video, how to turn a speaker into a microphone
for sure mate
lets stick a hundred of these inductors on the bonnet of a car and produce tons of altenrnating ac voltage recified by a full bridge diode and used to charge another battery!!
well it would work well under the floor mate for footstep generation
@@ThinkingandTinkering I believe that have something like that in Japan or somewhere I remember reading about it
A comment for YT rating engine - please ignore.
cheers mate
I like this project. The main reason I criticized the last video is because it was kind of a dead end project.
oh mate - there are lots of people and everyone finds something different in things. Quite a few folks found the last video useful and not the least dead end. I am sorry but all I read when I read what you wrote is you didn't find it useful - and well that's ok
Oh dear God! Not that tune!!!! Litteraly the audio in very horrible TH-cam video ever.
Well, at least I know where it's from now. I'll go there to avenge my ears.
lol go fo bit mate