How To Make A Bionic Ear Spy Listening Device!
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- čas přidán 5. 04. 2016
- How to make a very high sensitivity parabolic mic spy listening device. Amazing stereo audio amplifying circuit! See exactly how I made this long range parabolic listening device, including the stereo parabolic attachment. Enjoy the video!
**I have drawn the schematic in the video, but you can also find this circuit in an EXCELLENT book called, "101 Spy Gadgets For The Evil Genius". Refer to the link below at Amazon to look over the book. I do not profit from the sale of the book.
www.amazon.com/101-Spy-Gadgets...
**Want to listen through walls and floors? Then you will love my other video below:
• Listen Through CONCRET...
**Save BIG money on Electronic Gadgets/Quadcopters/& much more at the link below! Many times items are cheaper than Ebay. You will also be supporting my work. :-)
www.banggood.com/?p=U62720339...
(FLASH DEALS here: bit.ly/1VyAQFO)
Link to audio cable shown in this video:
• Headphone Output/STERE...
Thanks For Watching!
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**If you enjoy watching my videos, please show your support by SUBSCRIBING, POSTING LINKS to my videos on other websites & blogs, rating a "THUMBS UP", and watching my video playlists. Doing so helps to ensure that many more videos will be released in the future. (Views are essential to ensure this channel remains in an active state)** - Věda a technologie
Yours seems to be better than the ones I've seen for sale! Nice video! Thanks!
Very cool! Thanks for sharing. I think I will try building one up in the future.
+lasersaber
It does work amazingly well. Check out the other circuit in the video description area. You can listen through floors/walls. :-) Thanks For Watching!
Parabolic dishes can be used to improve wi fi signals as well . Point the dish in the direction of the router and move the phone towards the centre of the dish to find its sweet spot .
super project. you make it very simple to assemble this. thank you for your excellent vids.
+Arthur Schroeder
You're welcome!
Very clear instructions well presented well done thank you
Good work, I have not worked with electronics for some time and that is what I went to school for.
+Doublenotminer
Thanks For Watching!
You inspired me to make this device this weekend, but I forgot you made a new video and I just watched the old ones. The mics I got were pretty small about 5mm diameter, and they seem to be not quite as sensitive as yours. The seem to have a pretty limited range, ie they amplify great on a short distance if that makes sense. I found a lampshade for $1 yesterday that I'll try to make into a parabolic mic, though I think I'll just make it mono for simplicity to start with. Thank you for a great video. If you find more gadgets from this book that would be great!
Yes, try mono parabolic first, then stereo. :-) Thanks for watching!
Using a 'funnel at least of plastic of generous size, insert the microphone capsule through the tube and on the 'other side apply a metal plate in the direction of the "Fire" and it should still fit.
thanks for the video. old but gold. need more views
one of the good project that is DOABLE ! Yes I knew, it is 4 years ago, but still a good diy project. Some suggestions to improve: wind noise reduction: put some 'fake fur' surrounding the mic. Ambient noise: add Tone Control (bass treble control) or even better, an equalizer to filter out unwanted frequencies. I think there is no point to put 2 microphones since they are positioned extremely close together, so no stereo effect created.
Very inspirational video. I will be using the alignment procedure using a laser pointer to make a precise 2.4 gig transmitter/receiver for wifi using an ESP module. I will also use the foam padding idea from ebay packing material to keep the battery from rattling around in my cheap Chinese multi meter. This channel is full of useful ideas. The reviews on inexpensive testing equipment is exceptional.
+Joseph Nicholas
Glad you enjoy my videos!
Thanks for this sir, from your fellow DIYer. I do some changes, instead of using 2 potentio I'm gonna use single of it with 6 pins (dual linear rotary potentiometer)
Hi Christian! That sounds like a great idea, but each mic circuit may have to be adjusted slightly different from the other, which is why I used 2 separate POT's. I have a lot of excellent videos on my channel that cover many different subjects, so be sure to check out my extensive video playlists for other videos of interest to you, rate thumbs up, and share my channel with others. Thank You
Try an sesq83 or sesq84 for the dish for an improvement. There are others. If you really want to get serious on the amp you can use a device that was originally designed to pull in voices from 1.6 miles away with a 10 foot dish. Has high gain and tunable filters for voice. Get a copy of The Basement Buggers Bible if you can...then you can ride around in your car and feel special.
crazy impressive 👏👏
Thank you!
......"EXCELLENT!"......I once saw a similar project, but, instread of using a "parabolic" reflector to "collect" MORE sounds, they used a "HYPERBOLIC" shaped tube, (shaped like the flared end on a trumpet, to "EXCLUDE ALL sounds, except those entering directly in line with the AXIS of the trumpet-shaped barrel. The entering sound, could then be amplified, as needed, without inclusion of a lot extraneous/peripheral sounds being included into the final mix. This might be a valuable approach, for trying to gather a specific sound source, while eliminating all kinds of surrounding, distracting, sounds!
Glad you enjoyed the video! I have a lot of excellent videos on my channel that cover many different subjects, so be sure to check out my extensive video playlists for other videos of interest to you, rate thumbs up, and share my channel with others. Thank You
Very interesting
Great video...thank you
Glad you enjoyed the video! Be sure to check out my wide range of videos and share. Thank you
very nice toy. enjoyed the video very much. Thanks for sharing your knowledge
+tooterr101 oldgeezer
Thanks! Be sure to share.
Really very good :) I am learning to teach kids, and they want to build a transmitter with a wireless receiver to beep a buzzer, also they asked me to build a little shock prank, I think they will learn If they have fun. But it needs to be very cheap, maybe we can recycle. Thank you so much again for sharing your project.
Glad you liked the video!
Nice
Should do a build video of this
thank you for nice video.
i have a few motherboards that fail in the power to the processor.
can you make a video of that?
too many motherboards go to the trash for that reason.
say what? regulators are failing. sounds like your mobo's are overheating to me. may wanna build an external fanbox and duct the output air into the rear of the chassis.. filter it as well. I used a 4" tornado squirrel cage fan.. its been running 20 years.. no mobo failures. I switch the 115vac fan on/off with a 12vdc SCR running off of one of the 12vdc rails via the PSU. not only that EVERYTHING inside the box is cooled down not only the CPU (whose fan I remove they're "toys" compared to the fanbox). CPU runs around 90 F degrees, mobo around 110. downside? yeah noise may wanna put that fanbox in the next room and use dry vent hose to redirect. I use a 12" X 12" X 1" filter replace it every quarter.
do they have higher quality microphones to use besides the one you have?
thanks for sharing ...
+pei bossman
You're Welcome!
Can you do a tear-down of a Wall Listening device so we can see what they are made of?
good job
Thank you!
This is a very informative and intriguing video thank you very much for sharing.
I was wondering what would you charge to make one of those for individuals?
I happen to be legally blind and I would have a very difficult time assembling this particular project so would you be interested in building one of these units for me?
Glad you enjoyed the video! Unfortunately I don't have the time to make what's shown on my channel for viewers. Thanks for asking
I'm somebody that knows NOTHING about electronics, and diagrams of them. However I follow directions along very well, and have made quite a few fun home projects. Is this something a Novice could make?
I would like to make it!! its awesome
+Malith Arambage
Definitely a fun project! Thanks For Watching
+electronicsNmore :-)
Hi your device and video is so great but i'm a totally beginner. I have a few questions: 1.) Who i must connect the negative wire from the battery in the board? 2.) I seen in the video that you have connect the green and the black wire together from the right built-in-mic and soldered on the left contact from the mic. Who i must connect the black wire on the board from this both wires and on which contact from the parabolic-mic-female-jack i must connect the green wire? The green cable from the right contact of the right built-in-mic goes in the DPDT-switch, that i can see. 3.) Who i must connect the black wire from the left built-in-mic in the board? The green wire from the left built-in-mic i must connect on the underside of the DPDT-switch, right? 4.) The both green cables on top which come from the DPDT-swith, on which contacts of the parabolic-mic-female-jack i must connect? 5.) The black wire which going in the Ground from the headphone-jack i must connect on pin 2 from the left LM386, is that correct? I know that pin 2 & 4 of the left LM386 are connected together and this connected to the right LM386 with pin 2 &4 too. Sorry that i have so much questions, but i will build this device and please my friend can help me???? Or can you eventually make a remake video of this unbelievable device who you show how you place and solder all the parts on the board and how you connect all the cables on the parts? But from this updated device with the "DPDT-switch" and "the parabolic-mic-female-jack-line-in" from this video! I can send you bucks with Paypal when you can make this video. I hope you can help me my friend!!! Thanks
Awesome device, others I've tried are rubbish however this one would be perfect but since I'm no good with electronics are you (or anyone else) able to make and supply this device.? I wouldn't be surprised if other people would also be interested.
Glad you enjoyed the video! Unfortunately there isn't enough demand to make devices for viewers.
Great video - thanks.
I was wondering why this is a stereo amp instead of a mono?
+Martynjs
Hello. Better having stereo. Sounds picked up closer to the left mic will be heard louder in the left ear, and sounds picked up closer to the right mic will be heard louder in the right ear.
+electronicsNmore Ok - thanks.
Very Nice project
+Ali Asir
Thanks! Please be sure to share my channel with others, rate thumbs up, and check out my other videos.
+Ali Asir
Thanks! Please be sure to share my channel with others, rate thumbs up, and check out my other videos.
electronicsNmore ok sure i will do.
Do you have any facebook page ?
Ali Asir
No. CZcams is more than enough for me. :-)
Excellent video. I have a question: where its the right and left mic located at the parabolic dish. I was able to see one mic only. or maybe both mics are toguether
Wilber Ramirez Linares Both side by side in the dish.
so
both point towards the center of the parabola???
Wilber Ramirez Linares Yes, but you need to adjust the position in and out until you find where all the sound waves are concentrated.
Ad a low & Hi cut freq adjustable filter to this and you will rivle most commercial units.
I found this video very interesting,i am doing this as my mini project can you please help me in selecting proper microphones.
it would be helpful if you reply soon.
i too need help with microphone selection can you please give the specifications?
@electronicsNmore
Nothing special.
amzn.to/2qbJNet
Thank you so much i was thinking of using directional and high sensitive mic.
Hey great video ! Im deaf in my left ear if I cut the circuit in half needing only one ear phone . would i need to reduce the battery voltage? I don't think I would but better to ask than let magic smoke out.
+James Franklin Use 1/2 the circuit. No change in battery voltage.
Thanks
3.7v?
Can this device be linked to a trail cam for video and audio recording?
Patrick Kraemer You can take the audio output from this device and using the audio output to mic input cable I made in another video......do as you asked.
Thanks for your answer. I appreciate it.
Hi, I am trying to build this device but one of the 0.1 microfarad
capacitors started smoking when I attached the battery. What could be
wrong? Thank you for sharing your videos
You definitely have something connected improperly. You need to go over the schematic and make sure EVERYTHING is correctly properly. You may need to try using new components.
Thank you for your reply. How about the potentiometer? It has three terminals but do I need to connect all three of them? I googled it and saw some pictures that show terminals 2 and 3 in use or 1 and 2 only. Which one should I use? Thank you once again.
emergc Use the center and one side, or connect the center to one side, then use that with the last pin.
Thank you. The circuit is now working but may I may need a better microphone or headphone. I cannot hear faint sounds from distant sources. I can only hear them when I put the mic closer. I am not sure if I am getting a gain of 200 as explained in the book
Make sure the POT's are properly adjusted for maximum gain.
hi guys i got a problem about any of my neigbour rent room in a house i think they knowing what im lisening on my headphone, and so knowing when im awake from sleeping, and crazy part also knowing when im getting out on my room without any noise significant. do you know what im dealing in here guys, please help me if u know about anything of this
I am also dealing with the same problem my neighbours are listening every single sound of my house.My life is becoming hell.I don't know what to do.I even can't report the police as They ask me to prove it and as soon as any investigating officer came to my house for help my neighbour will know it right way and they will then remove all setup and I will be fooled infront of the police.I Can't afford changing my house.I Don't know what to do somebody please help me out.🙏🙏🙏🙏
hello , im wondering if anyone has found the maximum distance to detect sound with this unit.. thank you..
All depends on ambient noise, wind, etc. Thanks for watching!
MacGyver 😆👍🏻
sir in this circuit there is a 0.1uf capacitor...but when i search to buy it, the sites are giving results of different 0.1uf capacitors with different voltage values (630v, 400v, 300v, 250v, 100v etc)...which voltage should i buy? ..please help
Any rating OVER the voltage being used by the circuit is fine. Thanks for watching!
@@electronicsNmore thanks a lot sir for helping
@@electronicsNmore sir.. is it ok if i use 100k potentiometer instead of 50k?
Can i make something like this with a normal mic and a frying pan?
No, it must be parabolic.
is there a way to hear people talking on the other side of a room without holding a big device like this?
Yes, hide an audio recording device. :-)
I built this but it doesn't work, all i get is a loud humming out of the earphones that sounds like a motor boat, i tried a couple of different lm386 ic's and two different mics but no change it still sounded like a motor boat, i checked the circuit and rebuilt it from scratch with no joy.
You definitely did something wrong, because it does work, and it's fairly easy to assemble. Probably used the wrong pins on the IC.
I think the lm386 ic's i got off ebay are faulty or fake, i stopped the humming by adding a 470uf cap from vcc to ground then i could hear low level audio from the mic, i removed the 10uf that goes between pin 1 and 8 as this controls the amplification rate from 20 to 200, the audio remained at the same level, when i replaced the 10uf it did not amplifier x200, i can only put the problem down to inferior ic's from china, i tried all 50 and they were all the same..
I will order some branded lm386's from a reputable electronics store and try again, i built another one of your projects, listen through walls amplifier , it's works great, keep up the good work.
How do you cancel out someone whos useing one, or block their hearing????
You'd need to use an AJ-34.
@@electronicsNmore thank you!!
is there any method to bar or protect our homes from such devices...please reply.
No
I would like to buy your product
I don't sell any devices that I made on my channel. Thanks for the offer though.
For me it doesn't work i put the circuit like yout schematic, But i would try again...
pablo marmol Should work....
it's making a lot of noise
pablo marmol Check components and all connections. You screwed up somewhere.
Is this good to hear downstairs neighbors?
I'm not a doctor but I'm concerned about your hearts sound. Not trying to freak you out or anything but I would rather say something and be wrong than to have you go without checking. Anyway, love your videos!
+Jason Hall
Heart perfect. :-) I'm very athletic. and had an EKG/stress test 4 months ago(Heart rate peaked out at 214 BPM) on the treadmill. I also had an Echocardiogram. Everything was good.
Thanks For Watching
I'm the target what stops it foil.
I think a lot of the background noise is from your electronics. You need a low noise front end. The 386 is known for it's high noise.
duckduckgo.com/?q=Is+the+LM386+noisy&t=ffsb&atb=v155-4b_&ia=web
You might want to build the "Curiously Low Noise Amplifier" in the middle of this page and compare background noise between the two.
www.techlib.com/electronics/audioamps.html That would be an informative video.
You don't realize how sensitive the circuit is. There is no noise, you're hearing wind and road traffic in the distance. Thanks for watching!
Yes, I understand you have a gain of 200 from your inherently noisy LM386s. I gave you a link to 100 articles on how noisy the 386 is, and some ways to quiet it down a little. Prove it to yourself, remove the mic from the dish, put it on your bed under a pillow, with your gain a 200, how much noise do you hear? that's a rhetorical question, you will hear a slight roaring and lots of hiss.
I went to Washington DC to report I have been victimized by a device like this one. It began 12/2018 or sooner. It began at 1568 Lexington Ave. Mansfield OH. 44907 Zenco - Properties - Appleseed. I NOW live at 1161 Martinique. Dr. Marion OH and am still being subjected to this type of torture.
These devices have been sold for decades.
Does this thing emit X rays?
+nenad gaik
No. It does not emit anything, it receives sound waves.
+electronicsNmore Thanks for letting me know that.
I wish I new what he was saying
Do you have a degree in electrical engineering?
+GunZTube1
No. :-)
👍🏽👍🏽👍🏽
Glad you enjoyed the video! Be sure to check out my wide range of videos and share my channel with others. Thank you
maybe a dead cat on the mike could help reduce wind noise.
+Kristian B Lerche
Won't work. You will end up reducing the sensitivity of the device. What you heard along with the radio was road traffic and wind noise in the direction of the radio. You can greatly reduce the background noise using computer software.
Hi bro please give my you diagram
g.j
Thanks for watching
First view
Why is a TRUE parabolic surface FAR better than a spherical surface or the curved cover of a trash can ?
If one does NOT prepared to study the effects of a sound wave reflected by a parabolic surface then don't bother to
read what I have written.
Both a TRUE parabolic surface or a Spherical surface or even a curved cover will reflect a sound wave of a person whispering
say 10 meters away to a simple $2 microphone.
The TRUE parabolic surface will reflect the sound wave from every point of its surface to a specific point the "focus" of that particular parabola a simple mike will allow that sound to be amplified with little or NO distortion.
A Spherical surface will NOT reflect the sound wave to a "focus point: the sound will be reflected over a relatively large
area causing the microphone output to be much weaker (x10 times weaker , the curved cover much weaker (x 50??)
But FAR WORSE property of a sphere or arbitrary curve , Such NON -parabolic reflectors will also destroy the quality of the sound.
A short, abrupt "Click" sound will become much weaker , the DISTORTiON will be so severe that human voices will be unrecognizable or mostly likely impossible to understand !
observerms
Wok the hell
😂
brazil macumba evngelic no...all people here has a point...kkk