Solar Panel Audio Detector!
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- Опубліковано 26 сер 2024
- In this video I demonstrate how a solar panel can turn light waves into sound, by attaching the panels output wires to the input of a telephone amplifier. For those who are interested in making a project like this, please note that not all amplifiers will worked well with this set up, but these older telephone amplifiers worked great.. One other point I should explain, his how I'm able to light up the two LEDs (Light Emitting Diodes) with just an antenna and a ground wire. I live about a mile from two AM radio stations, so I'm able to pick up enough power off my 200 foot long wire antenna to light up the LEDs, with no problem. Also note that a 1N5711 can replace the 1SS86. It's not as sensitive as the1SS86, but it works in case you can't find the original 1SS86 diodes made by Hitachi. There are many fake 1SS86 Diodes out there that may work, but not as well as the original Hitachi 1SS86 Diodes.
Since I've posted similar videos related to this topic, you might find these other videos of interest, such as my 2 dollar radiation detector you can build.. Have fun but be safe.. • Solar Panel Audio Dete...
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Im a ham radio operator and that last one took me completely by surprise. That is really cool.
It took me by surprise as well. 73's
@@GrantsPassTVRepair oh a fellow amateur that's awesome. 73's
Same here. 73
Same here, 73
It should take you by surprise because a ground wire and an antenna does not have enough power to light up an LED... 🤨
You sir have an amplifier attached to that antenna and you have those LEDs hooked up to an audio output...
Furthermore, FM radio signals operate in the megahertz range and the highest frequency the human ear can hear is 20,000 hz. So even if a radio signal was converted directly into audio, it would be completely inaudible. Even at half the radio frequency it's still inaudible...
Call it a lie by omission if you will but it's still a lie.
Oh my God, that was my science fair project in 1979! That's when I got to see fiber optics for the first time! You should listen to the sun! Rock on!
I have to look this up
Listen to the sun?
What language does it shine in?
@BASSNETIC-MUSIC hahahahahahahaha !! I don't know, but it R U M B L E S, man ! It's all over the place. That would be a great youtube video before and during the eclipse ! I'll see if I can get something put together !
Wonder if all of Us could put this together and post videos ! Do testing of equipment before hand ! Don't burn hole in photo cell ! A drug store magnifying lens will be just fine !
This will be fun !
@@GREGGRCO yeah that does sound like it would be a cool experiment!
@@GREGGRCO Hell yeah 💯👍 that's gonna Rock like a concert I bet 😎👍
This guy is in the town I live in. Me and my cousin would come into his shop every now and then when we were younger and he used to show us all the cool stuff he had. I miss those times!
Go back :)
Go visit him again. Cool stuff he shows off!
If you're ever in town again, feel free to stop in and see the latest. ;-)
Is he dead?
@@priceandprideyeah
I have absolutely zero use for anything like this, and none of the parts to build it. But that doesn't stop me from absolutely needing one of these in my life
Just wait one day none of the phones will work, but you won’t remember that or this
Hahaha I know right! I have the stuff to do it though 🤣
This video sparked a curiosity in me, Im not very knowledgeable in any of it but My brain keeps circling back around to practical applications. Any ideas?
@@shane10 it might possibly detect laser light from a police speed detector
@@cyborg3032better yet, laser warning system for Helis, MAWS probably uses something like this
This guy is legit, any one of these things could have been one short but he put them all into one short.
Seriously bro ugghh 😒
God it's rarer than it should be
this is the new 'can we all just take a moment to appreciate' comment copypasta
@@supremebuffalo6322 If it's a copy they're copying from me, because I wrote an original sentence tailored to the specific content of this video.
The mother of all shorts
The content on those radio stations and the way that work was definitely throwing out a zombie apocalypse vibe
I thought so too😅
He was tapping into other dimension news feeds
I really hope it comes soon
😂 My thoughts exactly 😂😂😂
BOOM! Headshot! 😂😂😂@@braadynbuford817
Very cool, I guarantee you that you just inspired several people to better their understanding of electronics, and possibly gave some kid the inspiration and direction to do something great one day. Salute to you sir 🫡
On a smaller note, you did gain a new subscriber 😉
Thats' a nice thought. Thanks for the comment.
Yes. I hope so. Most social media is complete useless brain rot but this stuff is interesting and could inspire someone.
Now this is what I call fantastic UA-cam content. Oh man I sure miss radio shack.
It surprised me as well.
Out of all the UA-cam shorts I've seen, I've never been struck by such pure discovery and fasination of information I need to read more about. Thank you!
YOOO FOR REAL I'VE NEVER STOOD UP AND STARTED SCRIBBLING SO FAST IN MY LIFE
Control your algorithm
The second you see some nonsense swipe, then when you see something you're into like and comment l.
My shorts are full of physics. Mma drawing only one runny channel. I allow to play all the way through, guitar tutorial ls. Remember it's yours, the algorithm only dose what you tell it to you just found out how to tell it. Don't let a video of some A-hole destroying some guy shop and calling it a prank play through. And let someone know you appreciate their content when you like a vid
@@davidbelen7199 I am simply going to comment to ensure I obtain more weird post-apocalypse content!
So cool
@@thomasmcfiddles5133 same
I love what someone else said about electronics and electricity: "Know a little bit here and there about electronics, and people will think you're magic."
Most everything in life is magic as far as I'm concerned.
@GrantsPassTVRepair I hear you on that. The only hard-core magic I have is a complete understanding of how GPS works, including how to do the calculations by hand. That's more than enough in my opinion.
@@vljYWOKHow on earth did you learn that?
@@pioussutherland I have a bachelor's degree in surveying and land mapping. It was part of the course work. Also, my first professional (licensed) job was working for the MnDOT geodetic department, which is the state liason department for USGS which is a department of NOAA. USGS is the outfit that defines mapping projections and the NOAA maintains the satellite constellation. NOAA then works with NASA to launch new satellites when needed.
Basically I was (still am) a survey nerd, I learned a lot in that position about absolute accuracy of the GPS system. I can't wait for the new projections to land in the next 2 years. We mapped gravitational flux and added that to the geodetic model, meaning that the a Survey Grade GPS antenna with RTK corrections should be able to see absolute accuracy improvements of about 25%. At current that is a radius of .02 ft horizontal by .04 ft vertical at a 65% confidence and .1 ft by .15 ft at a 95% confidence. For Minneota anyway, results will vary based on terrain and activity of the local geodetic department, and yes this includes more than the USA.
@@pioussutherland I'm a Licensed Land Surveyor with a bachelors degree in Surveying, it was part of the course work.
I also worked for MnDOT geodetics which is the state liaison for the NGS which is part of NOAA which works with NASA to keep the satellite constellation going. I was end user QAQC testing ground derived location vs constellation derived. In MN we are sub .1 ft at a 95% confidence and sub .03 ft at a 65%, which is amazing considering all the variables.
After a fistful of decades, I'm still fascinated with how electricity, a magnets in a shaft attached to a paper cone can sound like my voice and my guitar. The accomplishment of computers and the accomplishments computers have helped scientists make, for me it's unimaginable. Zeros and ones add up to sound and image. I would imagine that even knowing how to program, it's still amazing.
Wow, that last one was totally unexpected. Very cool.
What the hell. I'm speechless 😶. Earned a subscriber.
People were using lasers to get google home and Alexa to open smartlocks
It was only pulled off by test engineers so far
@@unfinishedgamesnDLC theres videos of normal people doing it..
Me too, I expected 3 radio stations
Back in the mid-90's when walkie-talkies had those long pullout antennas, I could stand directly underneath an overhead powerline and pick up people's wireless phone conversations (not sure if it was cellphones or just wireless home phones, I was only like 10 y/o).
I remember those days before they began to encrypt the cordless phones. You probably had one of the 49 MHZ walkie talkies. I don't think any of the Cordless used the CB frequencies.
You could also just use the 49 MHz phone as a receiver with the base disconnected. I had a Sony with 10 channels you could roll through and listen to anything on those channels.
Picked up our neighbours phone convo once with a walkie talkie as a kid as well
@@sondreglosli6955 I remember those days before they changed frequencies, and encoded their transmissions.
My VCR used to pick up CB conversations, and our payphones would pick up cellphone coversations.
This might be the coolest thing I've ever seen in my entire life.... I would like to figure this out.
If you don't live near an AM radio station as I do, you may need to light your LED from a different source. I tried attaching an LED to my speaker wire output and it worked, but it had some distortion.
Bonus points for the Archer speaker.
And the diodes. Insane!
What's happening with the LEDs is the very strong AM RF is modulating them enough to be detectable with the solar panel. Cool! And yes, I miss Radio Shack too. I started out as a kid playing around with their perf box electronic kits and reading Forest M. Mim's books and articles in Popular Electronics. And here I am now with an electronics degree and about 30 years in the biz.
I remember the radio shack kits along with heathkit and graymark Thanks for the comment, and all the best.
bs no way
Rip radio shack. It was a cool store. The internet is still able to provide but it was a electric candy store.
@@mikerayle6103 I miss the old radio shacks that sold electronic kits.
@@aaronroberts4264 It's real. This video may help you understand how this works. ua-cam.com/users/shortsaSSqrddG6B0
This is perfect for all those times where I'm not sure if something is a remote control or not!
Wow that remote control from a tv i owned in the early 2000's has really come a long way.
The two radio stations got me confused as to how that works, but tis was the coolest demonstration I have seen in a long time.
Read my explanation.
Two local radio stations are putting out so much power, they are able to light up the LEDs because of my 200 foot long wire antenna and an earth gound.
@@AlexTuduran you act like youre famous or something dude, your explanation aint nowhere to be seen.
We used to take a diode, pair it with a very high impedance speaker (2000 Ohm) and listen to local radio. The diode acts as a demodulator for AM radio waves. In essence, it reconstructs the audio signal that modulate (Amplitude Modulation) the carrier frequency. The higher the impedance, the louder the output.
@@TheDooreater I just was on my phone and was harder to copy - paste. Thanks @GrimmSmile23.
Nothing says 1970s like Archer components and an LED radio! 😅 You rock!
Of course, in the 1970's LEDs were primarily of the red variety. I remember when blue LEDs came out and they were rather expensive. The white ones are even more recent with the production of high-intensity blue LEDs in conjunction with doping for yellow fluorescence to produce white light.
Oh, I remember the TV show MacGyver! Thank you, I appreciate your time and consideration!
Learned something the other day.
The reason why the negative end of a diode is marked '+'. On a full wave rectifier the cathodes produce your positive output and the anodes are on the negative output.
It's a nice way to demonstrate how the electromagnetic spectrum works. Radio waves can easily be translated to light waves, which can then be detected and turned into their original form of sound waves.
It's crazy how a lot of people don't understand that radio, is literally light
how do figure out what frequency it will transmit?
@@thomasmann3560I sometimes imagine how it would look like if I could see radio. I imagine many things would be very transparent, like small everyday objects, walls would be a little more opaque. Wi-Fi shining almost continuesly, some glow all around, phones shine too.
Radio waves ARE light waves. They're just being converted into another type of light wave then converted to sound waves.
That's nuts. It's even cooler when it's something you're interested in.
I sorely miss Radio Shack. :(
Me too. Especially their project kits.
And Lafayette kits
@@georgeharris5935 I remember Lafayette electronics.
Yes!!! The back of the store is where the maker bins were!!!
Still looking for a R.S. aluminum half-wave base antenna. Best antenna I ever had.
Totally understandable. The two strongest radio signals. Many LED lights pulse to savelectricity and minimize heat.
*INSTANT SUBSCRIBER!!!!!!*
I’m so Grateful that this Video Randomly Came up on YT Shorts!!
This video is like that Old School UA-cam Content that was Super Original, Extremely Interesting, Yet Easily Replicated !!!!
So basically he has an antenna and a ground wire attached to the LEDs. This means that the power is being collected by the antenna and running through the LEDs and running to ground. The LEDs are acting like channels. So cool.
I have done this a few times, even used a laser to send radio from one end of the house to the other. Its a pretty simple experiment to put together but hearing radio through a laser beam just seems like magic so it makes a great project to play with.
How?
@cheeseburgers82 all you need to send music from paser to solar panel is a small laser light, put a transistor on the power wire and connect the base with a resistor to an audio signal from any audio source say an mp3 player etc. On the other end the solar panel will pulse electricity from the laser pulses, so a small audio Amplifier can take that signal and put it to a speaker. It's not a difficult circuit. You can use mostly off the shelf things you just need a transistor and a resistor to pulse the laser with the audio wave on the TX side and an audio amp on the other Rx side.
I mean to be honest... It kinda is magic 🤣🤣🤣 like let's be real, electrical engineers are absolutely magicians. And I think it's funniest that everybody wants to pretend like they'd be really into magic if it were a thing, but nobody's into real-life magic because it's like super hard to learn how to do
Behold. Fiber optic communications.
I get the fascination, but to me it sounds like suggesting that you head east & travel around the world to visit your next door neighbor 1 house to the west. If the radio signal is present in 1 room in your house, it's (most likely) in every room. There's no need to "send it" to another room. Right?
I know nothing about electrical engineering, and I'm NOT trying to be snarky, just curious.
I grew up with a Radio Shack 101 in 1 electronics kit and I still remember the day it dawned on me that any circuit i built that had a diode and a speaker could be turned into a radio if i touched the circuit providing an antenna. I quickly discovered that the diode and speaker were the only thing necessary it didnt even need the tuning part of the circuit to operate. I never thought of using anything other than a speaker to detect the radio signal. I'll definitely be playing with this
Okay..but you have to.make a video and point us back to this source... 😊
I Made that Same Circuit, Think it was only a Coil, a Diode(Thing Germanium?), and Earphone, No Power, Clip on to Water Faucet.
It Worked
@danielpeck6269 Could you indulge me a little bit? I have several questions!
I understand the basic "check" principles of the diode; I know how to build a rectifier and all that.... but how does the check property of the diode, battery and speaker work?
Like... without a chrystal, or any other means of synthesizing a beat freq, how does this operate?
Does it work with basic diodes too, or does it have to be LEDs in particular?
And how is it catching two different frequencies too, on top of that?
Is there some resonant denominator between the two?
I have so many questions!!
BTW, I had the big wooden breadboard with fixed components wired to spring clips from Radio Shack too as a kid in the 80's... over a hundred circuits I could build with it, it claimed. Wish I still had that jewel!
Also unrelated but kinda, I immediately noticed the Archer logo on that speakerphone module... Radio Shack was the best!
@@1SqueakyWheelReceiving a double sideband AM transmission with minimal components would work by just half-wave rectifying the signal from the antenna. The varying level of signal would drive a varying direct current through the circuit, it's as simple as that. A series loop of coil antenna, diode, and inductive earpiece does that. A germanium diode is stable and predictable but not necessarily very sensitive though. For example, using a razor blade and a pencil lead as a more sensitive diode is possible. The flipside of that coin is that such a diode has a far lower reverse breakdown voltage and may distort and/or not be very loud with a strong station. You could find many different pairs of dissimilar conductors where a weak contact between them can act as a diode. Modern FM is virtually silent to the setup though, and single sideband AM is likely weak at best.
Fond memories you brought up.. especially when you started to combine the 100 in 1 kit with other digital devices. Then mom asked why it smelt like something was burning.. told her one of the parts just let out a little smoke 😂 a young Nikola at work.
Thank you, i didn't think the light to electricity transformation was so fast!
Dude finds a way to pickup FM signals with 2 LEDs and then transmit the signal with light. WTF did I just witness? Pretty awesome and guy keep tinkering.
They were AM radio signals from our local radio stations.
Lights were being serviced in a darkened office where I was asked to check out wall-mounted fan-forced heaters. Took the cover off the first and powered up. The fan was turning really slowly, which i thought odd. Usually they either work or not. Was reaching down to give it a flick when I thought of something.
Switched my headlight from low to high. Sho 'nuff, fan was operating normally. Nearly got punked by the ol' stroboscopic effect.
whaaaaat?!?!
scary
I hate PWM dimming with a passion. I understand it's the most efficient way to provide a dimmer looking light with a given LED, but fast moving objects look like they're under a strobe.
@@iamdave84 Perhaps it's just a question of inadequate filtering downstream of the PWM switch. A few pennies for a bigger capacitor might cure the issue.
My wife is one of those folks who is sensitive to flicker that most people wouldn't notice. I brought home a nice AC LED fixture for the kitchen and it gave her a headache, I suspect because it is letting through some 120Hz pulsing. So I got a new RV-style DC LED ceiling light that has four intensity settings and she's fine with it on any setting. (I'm off-grid and have DC available.) When I get some time I'm going to put a 'scope on them both.
@@civildiscourse2000I could be wrong but I think when you smooth the pulses the perceived brightness drops.
Eg, 3V LED getting 3V pulses 50% of the time appears brighter than the same 3V LED getting 1.5V DC, which is what you'd get if you smoothed the pulses completely.
@@iamdave84 Entirely possible that perceptual response might depart from what a pure signal analysis would suggest. So now you've just gone and made the problem more interesting. 😜
However if that's true and I was designing the system I'd opt for smoother output and push the duty cycle up a tad to compensate. But then I'd probably provide continuously variable dimming instead of steps anyway.
Incredible!!!!! I think what happened was the leds were pulsating at the same frequency as the radio signal they were receiving!!!!! And the solar cell translated that back into sound!!!!!! It's simply incredible!!!!!
I mean that is LITERALLY what happened in the video.
@@Treonthankfully this guy explained it for the people that don't understand instead of acting like a know-it-all and pretending it's common knowledge like *some* morons would do 🙄
@@grass5496exactly, because I was looking for this comment
Yes, the LEDs are following the radio signal AND they're cutting most of the waveform out, leaving a crude rectified high frequency signal, which doesn't cancel itself out (at the cell or speaker).
At first I was mis-LED by the fact that there are two LEDs and two stations, but that's just a coincidence. Because of no tuner involved, channels of different frequencies can be heard simultaneously.
Oh yes, two LEDs rectifying different halves of the RF give more output power. Crude full wave rectifier. Crude, because white LEDs have rather high forward threshold voltage, but then of course it's all proportional to the amplitude coming from the antenna, which will be compressed/clamped when the LED starts emitting light, right? So the voltage (actually current) won't rise too high to break the LEDs.
@@SamiJumppanen Yes.
The last one was very cool! The radio frequency was causing the LED light to pulse as if it were a speaker. If I were there I'd hang out for a bit and just listen. You could get more LED and tune into more stations.
Different length antenna elements respond to different frequencies, such as I show at this link. ua-cam.com/video/vHVmJ5lD9jc/v-deo.html
This guy is mint. More guys like him are needed. Get a shed, or a garage, and just start having fun.
Get married and you’ll have a reason to stay out there
@@shaman295 😂 I mean you could just try marrying the right woman, one who shares some interests? So they join you in the shed... Or you can settle. 🤷🏻♂️
Sometimes you watch a video that makes you go: „Huh,…“ and that’s one of them. Thanks for sharing
It even made him go huh
You don’t understand what it’s doing?
That's definitely an understatement 😂 I'm like what sorcery is this?
@@Industry-insider I'm no electric person, but i gotta basic understanding of the components and how they work. I've watched some videos tryna understand how class d amplifiers and ac to dc power supplies work. But, i am a trained mechanic in the military and i do understand how automotive circuits work.
And i can see where somehow that i have yet to comprehend those two leds are some kinda rectifier, but honestly, I'm still hung up on how in the hell not just one, but both leds lit up bright enough to transmit pretty clear voices, despite being in a well lit room, which would be like background noise, and I'm sure this is not a lossless reciever either, when it appears to me that not only is one led backwards, no matter how you hook it up, but they are being powered by, atmospheric radio waves going to ground, that must be a helluvva antenna.
So if this makes sense to you, can you explain it to me? Cause my gut is telling me that last part is bullshit, but i don't mind being wrong about that if I getta learn something new.
@@jrlmbert no, he’s feeding audio through the LEDs and the slight pulses are being amplified back into audio, you’re overthinking it. It’s just a way of transmitting data/audio or hearing flashlight PWM frequencies
It's amazing how the ears are so much better at decodong this information than our eyes.
On the surface you’re absolutely correct, but when you stop to think about how our ears work it starts to make a lot more sense. The light waves our eyes see don’t change in frequency, just relative amounts to other frequencies. Our ears on the other hand are “designed” to not see the amounts of 3 different frequencies, but a range of frequencies.
Our brain doesn’t use this to make a 2D map, but rather decodes it as a 2D graph. The difference here being that our brains pick out frequencies within a range along time instead of the strengths of 3 pre defined frequencies.
Essentially, our eyes aren’t meant for decoding information like that, even though intuitively the information is better represented visually. Our ears, however, are intended for recognizing frequency changes, abrupt or subtle, as that’s the whole deal.
Astrophysicists actually used this mindset change to analyze signals from fast rotating stars to actually make sense of the data - and it worked.
So, you’re not wrong, because it is amazing. But imo, it’s more amazing that we haven’t collectively realized how underutilized our ears have been in data analysis in modern times when our brains are already wired to efficiently analyze spectra in an auditory fashion.
Sorry for the ramble, I’m a goddamn nerd
@@ptrkmr incredible. I wonder what other types of data besides light might be better represented auditorially rather than visually?
@@ptrkmr the bit about the astrophysicists is actually really cool, thank you for sharing!!
@@ptrkmr Rock On!
@ptrkmr the weird part is also realizing that there is no reason in particular why our sight shouldnt work like our hearing. We could easily have ended up in a world where we talk by pulsing light, and hear light like we currently hear sound.
I absolutely love this!! You could even use it to set up a laser communication array
No doubt.
When doing assembly test in Tempe, AZ, one day the computer was picking up a local AM station. That was a fun fault to troubleshoot.
An understanding of the electromagnetic spectrum can be valuable
Ai generated comment?
@@andreashabeck1155 no
😂😂😂
The LED's setup reminds me of a cat whiskers radio that I built about 50 years ago. There was no battery but we just used a long wire as an antenna with a crystal and a very thin wire. When you touch the thin wire to the crystal we pulled in an actual radio station. This was the experiment that convinced me to become an Electrical Engineer.
Sound traveling through LED’s or light in general is wild!
Now hold on! I’m minding my own and scroll past this?!
1. I didn’t know you could do that.
2. I didn’t know lights pulsed.
3. Had NO idea LEDs could somehow pickup radio waves.
4. I’m going to have to build this if I can.
Genuinely this is so cool.
Fiber optic without the fiber! Cool!
You should read about IrDA. It's closer to "Fiber optic without the fiber". It is used to transmit binary data through infrared lights. It was popular in the 90's, but fell out of favor when Bluetooth and WiFi came around.
@@TheSeanUhTron you bet I will! Thanks! I’ve always been intrigued about “odd” ways of transferring data or power😄
this reminds me back when my Sony Ericsson use the IR to transfer data like mp3 from my acer aspire
Sir you are the neighbor I NEED to have either next door to me or near me. I dig stuff like this! Especially if I can get my son out in the garage with me.
Anytime, Dad! Fortnite doesn't have electricity or boobs, but Dad's garage does!
@@korbindallas4552😂 and beers
This is actually so cool i never knew it was this easy to turn light into sound and vice versa but it makes sense since the both run on frequencies
I dont think many realize the potential of this...and what he's showing only scratches the surface.
Honestly, im surprised this hasn't been flagged.
Flagged for what?
I saw a article a while back on how LED lightbulbs could pose a security risk.
Its similar to the radio station demo, except the bulb has a microphone and uses that to bias the PWM frequency. To decode it, all you need is a solar panel and an audio amplifier.
I did the same thing with CDS photo cell and a coupling capacitor with a battery when I was in grade school. Awesome Dave!
I'll have to try out the photo cell cell circuit. I found a few circuits in Forest Mimms communication projects, which enable them to operate at a much greater distance.
That is interesting.
You can also use most if not all digital Cameras like what on your phones to detect the infrared light from remotes.
Reminds me of the first time i found the radio through my electric guitar. It blew my mind. Ended up studying electronics when i got a bit older. Stuff like this absolutely fascinates me.
That makes two of us. As a kid I found it fascinating, but as an adult not much has changed.
@@GrantsPassTVRepair no definitely. I tend to tinker with the audio side of stuff because I always found it really interesting. I'll give you a sub mate
Soon to be an electronics engineer here, and I'm super impressed by this. Is there a full video explaining what you all did because id love to repeat this
You may like this video on the topic. ua-cam.com/video/vHVmJ5lD9jc/v-deo.html
Apparently you can also hear wifi signals too huh
@@GlitterGlitchyWi-Fi is the same thing as radio, just different frequency range btw
Wait until you hear about LED array backfeed motion tracking AI.
Just an amplifier wired to a solar panel...
One of the coolest things I’ve seen in a while
thats bizarre but now I know what was at the heart of my crystal radio builds when I was a kid
This is really cool, you're like a magician if you know electronics
I did this as a kid. The cool thing is you can hear wifi signals too.
How? A solar panel is not able to use the wifi signal.
Wi-fi is transmitted via radio waves.@@BlackWolF-vp8ou
@@BlackWolF-vp8ouWiFi (and Bluetooth) are radio transmissions, they're just digital and at a higher frequency than AM or FM radio
This is also what causes Bluetooth noise on older/poorly designed Bluetooth audio devices
@@PercyPanleo Yes, but de frequency is to low for a PV panel.
@PercyPanleo just because it is radiation doesn't mean it would work for a solar panel.
Solar panels work pretty much only in the visible light spectrum and a bit up from there, if you want to produce electricity from radio waves you'd need a metal antenna instead of a silicon solar panel
I had a similar incident, as a child. I had an electric piano, unsure the type, nothing worth more than a hundred or two. Either way one day i took my guitar chord and looped the piano in on itself and created the same effect, was picking up a radio station.
I never thought to use LEDs to make a crystal radio, but it makes siince!!! Nice.
This is cool.
Small cheap AM radios are good for anything that puts out a radio signal. Tune to lowest frequency and you can find key oscillator activity for smart key cars (we use them at work to verify proximity operation)
How does this not have more views? Genuinely fascinating.
You can use this to detect listening devices and probably even hidden cameras. Awesome 👍🏻
how would this detect a listening device? A listening device is passive...
You’re like my foster dad… always in the basement messing around with electronics and cb’s… Always at radio shack getting parts and standing around for an hour talking to other people about stuff.. or going to the local tv repair shop just sitting around for a couple hours talking about the inner workings of tvs miss the 80s
The radio shack went out of business in my town about 15 years ago... Was a sad, sad day 😢. They still around?
"Weird, huh?"
Love your energy. 😊
Im always amazed at what people can do that i can't but could probably learn, I've made several styles of revolvers all from my own design and machining but my eletrical experience ends at soldering split wires back together on tractors.
Youre a wizard in my eyes.
the last one is just light waves carring vocal pulses. they had to redo the whitehouse windows to protect against that in the 90s because you could bounce a laser off the window and hear a conversation on the other side
Fuckin what?
you don't even need a window anymore , I saw where they used a light bulb as a microphone. as your voice hits the glass of the light bulb it induces a vibration into the filament, this vibration then carries with the electrical source from the light bulb all the way outside of the building and can be tapped into. nothing is safe anymore
@@TheMailman1303 Yes
Wow those leds got a lot brighter than I would have guessed. Those transmitters are juicing. Really cool demonstration.
Now this is a short I wanted to see, really cool!
The leds works as diode detectors for AM signals, and the terminals and wires act as antennas. The diodes leds are slow that only detect the AUDIO and the RF can't pass.
No, that is not the reason for using diodes in AM detectors. This is not correct.
The diode removes the AC component of the signal, it is then the subsequent capacitor which does the envelope detection and does not respond to the higher RF frequency.
The output of the capacitor is _the_ demodulated audio signal, which can then be simplified and passed to a transducer so you can hear it.
@@deang5622I'm not sure OP is wrong, only because I have no clue what "slow that only detect the audio" means. Perhaps there was an error in (google) translation.
@@Orc-icide The OP is entirely wrong.
I can assure you of that.
Go read any article that describes how AM detection works that shows a circuit diagram and the waveform of the signal at various points.
The audio signal in AM is modulated on to the amplitude of a higher frequency carrier signal. Step 1 of the AM demodulatiom process is to remove the half of the waveform which is negative leaving just the portion of the waveform which is positive.
Step 2 is to extract the slow varying audio signal from that high frequency signal and the way to do that is using a capacitor.
The output of the capacitor is an average value that is varying with time, it can't charge up and discharge quickly enough to follow the higher frequency carrier.
It is called an envelope detector.
It is a very common technique used in electronics and particularly in audio electronics. Go look it up. Envelope detector.
@@deang5622
I like this explanation. Thanks! 🖖
@@deang5622 You over thinking this. It is basically a simple untuned crystal radio.
The IR remote sounds exactly the same as RF remotes on a radio!
the same timer
This reminds me of the feeling I got when I was in school studying recording engineering, and one day fully grasped the concept that rhythm/tempo and frequency/pitch are the same thing, just being applied along different time scales.
Or when realizing that electricity and magnetism are the same force, just being measured using different parameters (electromagnetism). And again when that was augmented by understanding that this occurs as a consequence of special relativity as it pertains to electron propagation through conductive wires, a real-world example of Einstein's theory in action.
Such an amazing feeling when your brain makes those kinds of high-level connections between seemingly disparate concepts. You just experience the world around you in a different way once it happens, on a legitimately life-changing level.
Makes my brain just go "that is so COOL" and get stuck in a loop, trying to find every possible application for my newfound grasp of the fundamental concepts at play. So satisfying.
Sounds like we have a similar enthusiasm for learning the fundamentals, and endlessly pondering all the possible applications.
The second flashlight sounds like an incoming call from back when phones used to distort the sound coming from speakers. And now I even feel like I understand that better.
Wow what a reminder I was doing this in the 1970s , but back then it was with flurorecent lamps and was a light bulb plugged into a radio
With slight modifications you could make a light & sound show out of just light! Very very cool 😎
this changes the way i understand how things work
You rock! I wish we could talk, 😞 Curious minds are sooooo overlooked. Broad knowledge makes the best conversation.
You might enjoy a book called getting started in electronics by Forest Mims.
This is what the lab of an inventor looks like! Amazing!
That like a giant opto isolator.
I pointed the optical cable from my TV at the solar panel, but I could not hear anything. I suppose it's digitally encoded.
that is because it does NOT work.
@@GrantsPassTVRepair Yeah it's digital. Not only is it more robust against noise but it can also carry other streams of data at the same time, and much faster too.
This project is over 50 years old!
In fact I remember it being in the Radio Shack 150 in one kit.
That one used a CDS cell.
Transmission of sound through modulation of light.
Oh whoop-dee-doo
Yes. Being able to transmit sound through variations of light is nothing new, but being able to light up LEDs from a radio station a mile away, and converting them back to sound was a surprise I didn't expect.
Physics is the GOAT.
Chemistry is like magic.
But Physics, specifically EMF, feels like having super powers.
Radios, Thermals, Cameras, Nightvision, precision instruments.
Much love to all the Electrical engineers out there.
Ya’ll are something else.
All that is really fascinating stuff. The radio station through leds was wild.
Someone tag electroboom. This would be a FUN video, and a good follow to when he turned a lighter into a microphone.
@electroboom yolo
Sir, you just invented a Wireless Fiber Optical transmitter, in other words a "Continuum transfunctioner"🤯
The first vertical video I see that is actually awesome. Keep myself asking where to get a telephone amplifier from.
Ebay has them, but garage sales and thrift stores are probably another good source.
I'm the zombie apocalypse, we must protect this man at all costs... He will keep us alive..
Zelador Map, DayZ. Agreed :)
How TF we going to talk into something with no mic
can always count on a wackadoo like you
THATS AWESOME 🤣 had no idea that was even possible, especially the actual radio stations coming through the frequency of the LEDS
The radio station is close to my location, otherwise it would not be possible to light up the two LEDs
This sounds so stupid - It does NOT work.
After seeing this I spent the past hour trying to see how to make one like thus myself. This is so interesting and inspiring, Please make a tutorial video!
There isn't much to making one of these, The solar panel has two output wires, and the amplifier has two input wires. Hook them together and you're good to go.
This reminds me of an article about scientists pointing a device at a glass window and from the vibrations they reconstructed voices of people inside the room. It's pretty wild thinking someone could eavesdrop from the building next to you
If the LED's are connected to a audiosource, it will also transmit this wireless to the solar panel. Back in the days, don't know of is this technology is still used, to swap data between 2 buildings of the same company, and where regular WiFi or cable could't not be used, both buildings had on the roof a sort of 2 way laser system. The transmission speed was not that high, maar data could be send and received.
Did some lookup, and it's called Free-Space Optical Communication.
I've heard that LEDs can put out a small voltage when exposed to light. Sounds like another fun experiment.
@PassTVRepair , it's in fact a small current, i have done that experiment a few months ago. Some LED's work great while some don't work that great at all. When light hits a LED, they start to conduct in the opposite direction. Also connecting a LED to a DMM in resistance mode, will show a lower resistance when a light torch is placed near the LED. They then work like a LDR. You can connect 2 LED's in series to a bench power supply , with one of them in reverse direction, both LED's are off, but when the reversed connected LED get hit by light, the other LED lights up.
Isn't this the same principle that fiberoptic communications work on?
@sterliving , yes and no. Fiberoptic use a physical glassfiber cable between to 2 points, but with called Free-Space Optical Communication there is no physical connection between both points, because the light is transmitted through air. You can compare it with the IR eye with light beam for opening doors at shopping malls.
The used signals will propably be same protocols as used with a fiberoptical cable.
That's really cool! The coolest thing I've seen with a solar panel before this is that you can reverse the output to make the solar panel into a light
Sounds interesting. I'll have to try this.
As someone who's been playing with vsts and oscillators for the last 10 years as a hobby I can tell you that is awesome😂❤
This may be the coolest short I've come across
Now that you commented you'll get more
@@ibringthepayani hope so too
Not MAY. It IS
Even cooler than the woman that is twerking in front of a monkey?
Definitely the most productive and thought provoking short.
You legitimately just blew my mind with this. This just helped me clip together some fundamental principles. Thanks
After watching thos video I feel happy, and emotional. I've never seen anything like this before. I'm in shock and humbled
That's nice to hear you enjoyed the video so much. Here is an additional video that you might also enjoy. ua-cam.com/video/vHVmJ5lD9jc/v-deo.html
I haven't seen one of those dvd/vhs remotes in YEARS. Brought back my childhood lol.
Most tech. We use is decades old.
Guys like him will be our future if we have one. Smart man.!😊 There used to be a time of excitement for a better technological future. But all of society was excited about it believing we'd have flying cars by now. Not just the super rich?And leave everyone else in the dirt while they visited the stars!🤔😥😈 Sorry? 😅
Remember those little noise makers we used to put on our bikes that made all kinds of weird sounds like the remote did to it
Absolutely awesome! Best short ive seen all day
That is a PWM signal from lamps and last is a crystal radio. I did that yesterday
I didn't use a crystal radio on my demonstration. I live so close to the radio stations, I can do this with just two LEDs that are reversed biased as I demonstrate in this video. ua-cam.com/users/shorts6m2MUinMCf8
@@GrantsPassTVRepair ok now i understand
such a FAKE
@@4105cardwell no it is real
Im currently building some guitar pedals and this is fascinating!
Light can trasmit data, cool. We got optic internet cables and lasers after all!