I've been an EE for 39 years and that was a really good explanation of inductors, capacitors and resonant frequency for people new to the subject. Great job!
That’s funny but he could probably make one of those home made fusion reactors. It could be like a long term project/long format video series. Whatever you want to call it.
I'm in highschool and I've just started learning EE and legit, the explanation at the start made soo much sense. You have been an amazing teacher, hats off to u
I highly recommend the book Getting Started in Electronics by Forest E Mims III. I got started on it when I was 10 or 11. It's an excellent book for someone getting started. And it gives intuition without bogging you down in equations. From there, the next thing you want to do is either a) get an oscilloscope for $500 or else b) learn how to use the program PSPICE to simulate circuits (it's free).
You've done a good job although I can see how some people might get confused. The trouble is you'd need to visually show things like an induced magnetic field and electrons moving as that field collapses. And if you're going to go into that level of detail it's going to be a lot of work and make for a long episode. But none the less thanks for a really interesting video.
A cheap and dirty way to make a small variable capacitor is to twist some small wires (like solid cat 5 cable wires) together. You can change the capacitance by twisting and untwisting the wires. For the value you specified, two lengths about 3-4 inches long would be a good place to start.
I'd love to see more circuit calculations. Maybe not in the video, but a link to something like a google document, with documentation on what to change and by how much for varied results. Like what you talked about with the antennae's capacitance vs the variable capacitor. What changes can we make to the variable capacitor, and what will those changes do to the resulting Rf?
Since I couldn’t find the parts-list I went through the whole diagram and captured every component I saw. I don't know if anybody is still interested in this, but here’s what I got (this doesn’t include the parts for the audio amplifier): Resistors: - 2x 100 Ohm - 2x 470 Ohm - 2x 8.2 kOhm - 1x 2.2 kOhm Capacitors: - 3x 10µF - 4x 1.5nF - 2x 3.3pF - 2x 150pF Other needed Components: - 1x Antenna - 2x 1mH Inductors - 3x JFETs (as it was mentioned in the video, he used the TiS58) - 1x Variable Capacitor 4-50 pF - 1x audio Jack - Power Source I do not guarantee that everything in this list is correct, I gave my best, but feedback is always appreciated!
How do modern units sample a voice? Yes I want to see how the volume can be controlled. Wouldn't the phase difference create a signal even without a change in frequency? Or is that just a DC ripple?
Hey I want to make this for the upcoming science fair but it’s kinda frustrating to jot down all the materials while watching the video and I was wondering if you could give me a list of materials. Please. If you’re able to.
Hey Keystone, do you think you could make a dumbed down tutorial that may fit the parameters of a project I'm really looking forward to starting? I'm going to take a new skateboard and run individual red, blue, and green leds through it. The objective is to hide the arduino, leds, resistors, wires, battery, and other possible components inside of small cavities I'll make in the top of the board. The leds will shine through holes that will display the colors beneath the board as the grip-tape hides all of the electronics and cavities located in the top. I'd love to use the arduino to adjust brightness and colors, alongside using something as thin as a cellphone or watch batteries to power everything (lithium ion for recharging would be absolutely amazing if possible). I'm sure you're beyond experienced enough to conclude a circuit for this and I'd love to explain more if you're interested. It'd be nice to have a video out there that's generalized for this build since I know many people would go nuts over it.
And by dumbed down I don't mean I prefer you to leave math out of it. But I'd love minute explanations behind what's going on along with the math. This whole electronic's thing is like wizardry to me. I plug my computer into the wall and magical pixies make it all happen. (:
Yeah, that level of complexity is pretty trivial as things go. The color of the lights is a lot harder than the brightness though. You might need a microcontroller / arduino if you want to pick and choose colors... For the brightness part, I could have built that when I was 10.
Please show us the best way to produce HHO the quickest and with great PSI and without using a electrolyte. so I can use it as a torch to cut and to melt metal. Note I'll be going through thick metal so the length of the flame is important (psi)
btw, in the original circuit he used 1n5 on C13 which is 1mf(according to google) I would like to ask why you use 1.5nf instead. Did you test 1mf and get the best result from 1.5nf ?
17:15 What is the wire He just randomly added to connect both breadboards? I literally think this is the last step I need! I just need to know what plugs into the audio other then the audio out, like is there a seperate audio in? cause as is I get a sound like a partially plugged in amp (so I assume thats what it is)
Good stuff as always. I was wondering if you could do a whole video on the best old electronics to salvage and how to safely salvage components from them. I am a hobby DIY electric guy, who lives in poverty and doesn't have a dime to spare on parts. It would be helpful when i'm at a goodwill/thriftstore to know what electronic devices have the most useful components and how to remove them without breaking them. Thanks! also, are you going to college this fall? and if yes, is it for electrical engineering? i sure hope so cause we need people like you!
Can you please provide more details about the variable capacitor? I've got one, with three terminals, and looks like I'm lost in how I'll put it in the circuit.
I have always wanted to build my own theremin! Sooooo coool! I also saw your video on combining a plasma ball and theremin. Way cooler than just the LED lights I was going to settle for. I have an idea for an interactive artwork for an exhibit next January and I wanted to figure out how I could incorporate light and sound. This and the diy plasma globe will be perfect! Now I just have to figure out where to buy/ thrift all the parts I’m going to need and how to set them up inside my sculpture safely. I have a small old guitar amp to use for audio out. I want to make 12 small plasma globes and each one of them playing a different frequency so I can try to tune them to the 12 notes and halftones in an octave. I wonder how the circuitry for this will look and how complex that will make it. Thankfully my partner is an audio engineer and can help me out with some of the build and calculations.
So... Is there anyway you can do a video explaining what everything is, and what it does? You know, for us who aren't really savvy with most of the components you use. I hate to admit it, but this is definitely me. It would certainly make following your explanations easier. I learn a lot by watching you, but sometimes its a little hard to follow.
Hey Scott, I'm sorry to say this sort of stuff requires a lot of reading and practice to understand. That said it is very interesting and rewarding. I would reccommend starting with the learning tools at www.allaboutcircuits.com/ then see if you can get yourself some 2nd hand textbooks to read. One of the most valuable skills you can learn in tomorrows world is learning how to learn, but this wont happen if you ask someone else to teach you. You have to do it on your own. Best of luck.
I've found that simple guides to electronics just don't cut it. They cover the general properties of components but almost always skimp on the important detail, leaving people confused. But then I guess it's a catch-22 situation. For example do you cover RDSon and non-linear operation or do you just call a mosfet a switch? And how do you make complex topic simple but still fully functional?
The reason for the glossing over is as follows: If someone were to explain more than just what the lesson is focused on, where do they stop? In this field everything is related. You should react the same way. To do this, get a hold of the datasheets of components at hand and study them; know what sort of switch you need your MOSFET to be for a given application (there are many) and study that. The more datasheets you spend time with, the faster you will recognise relevant information. It is far too easy to waste time thumbing through pages of stuff you don't need to know to do a particular job. Once again, learning how to learn, because nobody else can learn for you. I hope this helps :/
Hello, I built this circuit but havent get sound from the antenna. I used J113 instead of 2N5484 and all the other components are identical. I got some strange radio like sound from amplifier but the antenna is not function at all.
btw for those who dont know, that short clip he played from "over the rain bow" was from Peter Pringle. Look him up , the star trek song he does on the theremin sounds amazing
hello, i have spent too long to look for a device that would cut off power supply when not in proximity. lets say for example, I am riding my bike and I have a device in my pocket, if for some reason my bike and I got separated (stolen) the ignition is cut off. thanks
Could you please make a vacuum tube related project, particularly a vacuum tube tesla coil? I've looked up some tutorials and they are really confusing, but you're really good at explaining things, so i think you would do a good job. :)
Y'know, it's funny. I was made fun of for most of my life growing up for being right handed, and wearing my watch on my right hand. I thought nothing of it, of course. After all, I'm right handed, so it would make sense for my watch to be on my right hand. No. Apparently my watch was always supposed to be on my left hand so I could "operate" it with my right. This never made sense to me, and I'm also the outside-of-the-box thinker among my peers, so it's refreshing to see you have a watch on your right hand (the hand you write with). Also, great tutorial. I typed all of this under the trance of a DIY Theremin.
Awesome video! Great detail about the actual circuit! Might actually build one of those. One idea for a video I have is like on how to build a simple Laser Engraver/Cutter out of mostly salvaged parts.
I'm getting a ton of feed back in the audio out but the destructive interference does produce an audible frequency... any ideas? My speakers are from a computer so they have their own external power source..
Yeah WHY do almost ALL of these DIY theremins lack the volume antenna? >_< How the hell are you supposed to play these if you can basically only play one long note?
@@KRAFTWERK2K6 yeah but a key-like switch or something would probably be easier to adjust quickly; maybe connect it to an AREG or something to get a nice fade in/out
Ok i need help here. I built this with the schematic provided. All the same values down to the 2n5484 JFETs. I originally used 1 milli-henry inductors (schematic says 1mH), later replaced them with 1 micro-henry inductors. The math made more sense for 1 micros. I'm getting 0 oscillation shown on my scope anywhere, it's just passing DC. Are the FETs bad? 6vdc in, 9v battery with an lm7806. All new caps and inductors, 1% tolerance resistors, very short connections between components. I'll upload a video If I can get it going.
mine's don't work....i followed as the video.... can u show how to use connect 1/4 inch connector & pitch antenna and the power battery(9V) . i would be very appreciate if u can send some emails about connection details.....
5:00 That Epsilon in the formula is not the dielectric constant, but the permittivity, and that equals with the dielectric constant times the vacuum permittivity which is round about 8,9 * 10^-12 Q/Vm, so according to that you will get a capacity round about 10¹¹ times lower than with your explaination. Really interesting project though👍
Can you tell me the functioning of desktop Tesla coil you made as I should explain the functioning in science fair.I hope you'll make a video about that.
And for those of you out there who are overwhelmed.. Just forget the math. (Just think input and output - what do you need to put in, and what do you want out.) Look at the components. Orient the transistor correctly. Understanding the white breadboard will be clear once you ohm it out, or you can use a battery and a small light bulb. The "plus" and 'minus' run straight down the length of the board like 2 wires. They run on both sides for convenience. The horizontal holes that he mounts the components to are separate horizontal "share" wires that attach to nothing, and must be jumped to get power. You WILL get used to a breadboard and it will become clear with time.
You buy a plug that's e.g. 1/4 in stereo male on one side and that has a barrel that you can unscrew and solder wires onto on the other. Then you solder the wires coming off of the theramin to that plug. Or better yet, attach the ends of the theramin to a male plug and buy an extension cable that's 6 ft long or whatever to plug it into the amp. Make sure you're plugging it into a mic input not a line in or else you'll kill the battery of the theramin within a few minutes. And you may need a dedicated power source anyway instead of a battery. I'm not sure how much current a guitar amp's mic input will draw, but it's probably too much for a 9V battery. In which case you can build a power suppy for it with an LM317 voltage regulator. See the circuit in the book Getting Started in Electronics by Forest E Mims III or else just google how to build a power supply with a voltage regulator. And then sub out the 9V battery.
Anybody know what to study if you want to get into making your own synthesizers such as this one? I'm very interested in learning this kind of stuff. I'm not great at math though.
With in two seconds of this video my eyes went over to the suggested videos Oh... a Theremin...WOW!! all this time I've been calling it the Star Trek instrument
![Noob To Max With DRAGON REWORK In Blox Fruits [FULL MOVIE]](http://i.ytimg.com/vi/LnBMOinoOvA/mqdefault.jpg)
Him: "Hopefully you can understand that"
Me: I hope he has a drawing explaining that
Him: "ok, let's move on to the math"
Me: ssshhhiiittt
Drawings are gay
NOT THE MATH! Nightmare which will haunt my whole life! x(
Git gud scrubs
Me : Oh i don't know english
That makes 2 of us
I've been an EE for 39 years and that was a really good explanation of inductors, capacitors and resonant frequency for people new to the subject. Great job!
thank you :)
Keystone Science. The only man smart enough to use a small TV as a hammer.
can you make a particle accelarator
krishna mohan what's the point
In making a joke? They're funny, like haha funny.
Jonathan Cluiss The point is making complex technology, avaible to people with less money.
krishna mohan I liked this comment assuming u're being sarcastic....
if ur serious you're either 12 years old or dumb, just dumb.
That’s funny but he could probably make one of those home made fusion reactors.
It could be like a long term project/long format video series. Whatever you want to call it.
Can you please give me the material list to make this??? I cant find it on the official page
Keystone Science: I'm glad there are people like you, who still honor discrete components! Thank you!
damn, I'll try to make this later, and I would love to see a more complete one, with the volume antenna
Every electronics video should have a thunder storm. Keeps us grounded.
I'm in highschool and I've just started learning EE and legit, the explanation at the start made soo much sense. You have been an amazing teacher, hats off to u
I highly recommend the book Getting Started in Electronics by Forest E Mims III. I got started on it when I was 10 or 11. It's an excellent book for someone getting started. And it gives intuition without bogging you down in equations. From there, the next thing you want to do is either a) get an oscilloscope for $500 or else b) learn how to use the program PSPICE to simulate circuits (it's free).
You've done a good job although I can see how some people might get confused.
The trouble is you'd need to visually show things like an induced magnetic field and electrons moving as that field collapses. And if you're going to go into that level of detail it's going to be a lot of work and make for a long episode.
But none the less thanks for a really interesting video.
Hey, I understand this video is a bit old, but do you have a parts list or BOM for what you used in the circuit?
What a genuinely nice person, linking his viewers channel
I bought a Therrmin for my daughter but she never touches it. ;-)
If you don't need it that's my dream lol
@@thedigitallabrat woooosh
*throws vegetables*
send it to me :(
@@mishasofia6091 if you didnt know thermin is not played by touching it.
A cheap and dirty way to make a small variable capacitor is to twist some small wires (like solid cat 5 cable wires) together. You can change the capacitance by twisting and untwisting the wires. For the value you specified, two lengths about 3-4 inches long would be a good place to start.
William J. True. Some guy told me the same thing...havent tried it but nice when you dont have one right away
William J. Is this a trade secret? Lol
ivan Reynoso - Yes! Don’t tell anyone! ;-)
Mom: What did you rent from the band this year, honey?
Me: A THERAMIN.
This was absolutely the funniest goddamn thing I saw in a long time...thank you for this...it came out of nowhere...
I'd love to see more circuit calculations. Maybe not in the video, but a link to something like a google document, with documentation on what to change and by how much for varied results. Like what you talked about with the antennae's capacitance vs the variable capacitor. What changes can we make to the variable capacitor, and what will those changes do to the resulting Rf?
In hvac we change out capacitors all the time and ive never heard such a good explanation of the basics of what exactly it does
Since I couldn’t find the parts-list I went through the whole diagram and captured every component I saw.
I don't know if anybody is still interested in this, but here’s what I got (this doesn’t include the parts for the audio amplifier):
Resistors:
- 2x 100 Ohm
- 2x 470 Ohm
- 2x 8.2 kOhm
- 1x 2.2 kOhm
Capacitors:
- 3x 10µF
- 4x 1.5nF
- 2x 3.3pF
- 2x 150pF
Other needed Components:
- 1x Antenna
- 2x 1mH Inductors
- 3x JFETs (as it was mentioned in the video, he used the TiS58)
- 1x Variable Capacitor 4-50 pF
- 1x audio Jack
- Power Source
I do not guarantee that everything in this list is correct, I gave my best, but feedback is always appreciated!
Hmm I’m sorry, I must have deleted my list at some point :/ I’ll verify on my diagram I have in my files and put in the description!! Thank you! :)
@@KeystoneScience Alright, you're welcome :)
And keep the awesome projects coming, I love your channel!
@@KeystoneScience the list seems to have gone missing again :( is there any chance you could but back the list and diagram in the description?
This is the best channel I've found d in a while, great job, much wholesome, much knowledge lol.
Excellent! Is there a way to make the range of pitches more big in space? So we don't have to do such micromovements to play tones.
I love your intro song, it reminds me of the music they had in the early educational CD-ROM games! Ah, nostalgia.
GIMME DA MEETA!
Shit wrong channel.
ACvoltage haha so very funny
you watch electro boom?
gimme the booze shit wrong place
FULL BRIDGE RECTIFIER
Your explanation of inductance and resonant frequency was so helpful and comprehensive
Thank you for the cut to the thunder storm... Love that thunder
There should be lightning sound in a second.....
Dude that's called thunder😂😂😂😂😂
How do modern units sample a voice?
Yes I want to see how the volume can be controlled.
Wouldn't the phase difference create a signal even without a change in frequency? Or is that just a DC ripple?
Any updates on the Theremin? Also, do you have the digital schematic?
Hey I want to make this for the upcoming science fair but it’s kinda frustrating to jot down all the materials while watching the video and I was wondering if you could give me a list of materials. Please. If you’re able to.
Hey Keystone, do you think you could make a dumbed down tutorial that may fit the parameters of a project I'm really looking forward to starting? I'm going to take a new skateboard and run individual red, blue, and green leds through it. The objective is to hide the arduino, leds, resistors, wires, battery, and other possible components inside of small cavities I'll make in the top of the board. The leds will shine through holes that will display the colors beneath the board as the grip-tape hides all of the electronics and cavities located in the top. I'd love to use the arduino to adjust brightness and colors, alongside using something as thin as a cellphone or watch batteries to power everything (lithium ion for recharging would be absolutely amazing if possible). I'm sure you're beyond experienced enough to conclude a circuit for this and I'd love to explain more if you're interested. It'd be nice to have a video out there that's generalized for this build since I know many people would go nuts over it.
And by dumbed down I don't mean I prefer you to leave math out of it. But I'd love minute explanations behind what's going on along with the math. This whole electronic's thing is like wizardry to me. I plug my computer into the wall and magical pixies make it all happen. (:
Hey, are you still trying to do this project or have you figured it out already? I know it’s a bit late but I might be able to help you with it still.
Yeah, that level of complexity is pretty trivial as things go. The color of the lights is a lot harder than the brightness though. You might need a microcontroller / arduino if you want to pick and choose colors... For the brightness part, I could have built that when I was 10.
Please show us the best way to produce HHO the quickest and with great PSI and without using a electrolyte. so I can use it as a torch to cut and to melt metal. Note I'll be going through thick metal so the length of the flame is important (psi)
btw, in the original circuit he used 1n5 on C13 which is 1mf(according to google) I would like to ask why you use 1.5nf instead. Did you test 1mf and get the best result from 1.5nf ?
where is the link for the to buy list and the circuit? not the original
Great video, I came to this channel when it had just started and it's wonderful to see it grow and become popular and successful.
17:15 What is the wire He just randomly added to connect both breadboards? I literally think this is the last step I need! I just need to know what plugs into the audio other then the audio out, like is there a seperate audio in? cause as is I get a sound like a partially plugged in amp (so I assume thats what it is)
2:00 Isn’t that the same principle which is used in a Tesla coil?
Also, how about the volume antenna?
Thanks for sharing. Did not find a LINK to your schematic and parts list!!
22:31 That laugh though! Awesome tutorial man! You make it very easy for a beginner to understand
Good stuff as always. I was wondering if you could do a whole video on the best old electronics to salvage and how to safely salvage components from them. I am a hobby DIY electric guy, who lives in poverty and doesn't have a dime to spare on parts. It would be helpful when i'm at a goodwill/thriftstore to know what electronic devices have the most useful components and how to remove them without breaking them.
Thanks!
also, are you going to college this fall? and if yes, is it for electrical engineering? i sure hope so cause we need people like you!
I understand nothing
I was hoping to make one for myself,but alas my knowledge of electricity escapes me.
There's literally dozens of us. DOZENS!!!
Where can I find more detailed explanation about this circuit? Why is it oscillating and why is there a frequencies difference at the output?
Can you please provide more details about the variable capacitor? I've got one, with three terminals, and looks like I'm lost in how I'll put it in the circuit.
I have always wanted to build my own theremin! Sooooo coool! I also saw your video on combining a plasma ball and theremin. Way cooler than just the LED lights I was going to settle for. I have an idea for an interactive artwork for an exhibit next January and I wanted to figure out how I could incorporate light and sound. This and the diy plasma globe will be perfect! Now I just have to figure out where to buy/ thrift all the parts I’m going to need and how to set them up inside my sculpture safely. I have a small old guitar amp to use for audio out. I want to make 12 small plasma globes and each one of them playing a different frequency so I can try to tune them to the 12 notes and halftones in an octave. I wonder how the circuitry for this will look and how complex that will make it. Thankfully my partner is an audio engineer and can help me out with some of the build and calculations.
Awesome video... I hope to make some for Christmas gifts. Where is the digital layout and parts list?
Love your videos. We need more RUclipsrs like you.
Would love to see one with the volume antenna also would love to see how you made your lab EEVblog made a few videos for labs
Could you make this with a motion detector? Like the kind in a an arduino starter kit or would that just complicate it .
He mentions a parts list? But the link only goes to the original schematic?
So... Is there anyway you can do a video explaining what everything is, and what it does? You know, for us who aren't really savvy with most of the components you use. I hate to admit it, but this is definitely me. It would certainly make following your explanations easier. I learn a lot by watching you, but sometimes its a little hard to follow.
P.S. I really like your videos. You have great content!
Hey Scott, I'm sorry to say this sort of stuff requires a lot of reading and practice to understand. That said it is very interesting and rewarding. I would reccommend starting with the learning tools at www.allaboutcircuits.com/ then see if you can get yourself some 2nd hand textbooks to read. One of the most valuable skills you can learn in tomorrows world is learning how to learn, but this wont happen if you ask someone else to teach you. You have to do it on your own. Best of luck.
I've found that simple guides to electronics just don't cut it. They cover the general properties of components but almost always skimp on the important detail, leaving people confused.
But then I guess it's a catch-22 situation. For example do you cover RDSon and non-linear operation or do you just call a mosfet a switch? And how do you make complex topic simple but still fully functional?
The reason for the glossing over is as follows: If someone were to explain more than just what the lesson is focused on, where do they stop? In this field everything is related. You should react the same way. To do this, get a hold of the datasheets of components at hand and study them; know what sort of switch you need your MOSFET to be for a given application (there are many) and study that. The more datasheets you spend time with, the faster you will recognise relevant information.
It is far too easy to waste time thumbing through pages of stuff you don't need to know to do a particular job. Once again, learning how to learn, because nobody else can learn for you. I hope this helps :/
Hello, I built this circuit but havent get sound from the antenna. I used J113 instead of 2N5484 and all the other components are identical. I got some strange radio like sound from amplifier but the antenna is not function at all.
Ahh the ''what will he use to attach the letter to the wall today'' is by far my fav part :P
Awesome. That was actually very good playing at the end.
thanks for this fella....will be off to build one in a bit.
thanks for sharing :)
btw for those who dont know, that short clip he played from "over the rain bow" was from Peter Pringle. Look him up , the star trek song he does on the theremin sounds amazing
Is there a way to attach a color changing led light into this so the color corresponds with the pitch?
hello, i have spent too long to look for a device that would cut off power supply when not in proximity.
lets say for example, I am riding my bike and I have a device in my pocket, if for some reason my bike and I got separated (stolen) the ignition is cut off. thanks
Could you please make a vacuum tube related project, particularly a vacuum tube tesla coil? I've looked up some tutorials and they are really confusing, but you're really good at explaining things, so i think you would do a good job. :)
Sorry for this question, but am I missing the parts list?
BEST CHANNEL EVER
Most of this went over my head, but I want to learn. Where do you get your components from?
How long is the extra wire that you connected to the antenna?
Y'know, it's funny.
I was made fun of for most of my life growing up for being right handed, and wearing my watch on my right hand.
I thought nothing of it, of course. After all, I'm right handed, so it would make sense for my watch to be on my right hand.
No.
Apparently my watch was always supposed to be on my left hand so I could "operate" it with my right.
This never made sense to me, and I'm also the outside-of-the-box thinker among my peers, so it's refreshing to see you have a watch on your right hand (the hand you write with).
Also, great tutorial.
I typed all of this under the trance of a DIY Theremin.
Where can I found a list of materials?
I gotta say. i love your videos. and I was wondering if you had a use for a 3d printer?
7:08 that looks more like a mosfet than a jfet. The symbol looks like it has an insulated gate, but jfets don't have that.
Did not even notice that, but you ate right.
Isolated Gate
Another awesome video , thanks for sharing all this cool stuff with us Keystone Science!
Awesome video! Great detail about the actual circuit! Might actually build one of those.
One idea for a video I have is like on how to build a simple Laser Engraver/Cutter out of mostly salvaged parts.
I'm getting a ton of feed back in the audio out but the destructive interference does produce an audible frequency... any ideas? My speakers are from a computer so they have their own external power source..
You should make a cathon ray tube
gamerdudes superelite cathode?
cat soup yes, I didn't spell it correctly thank you
CATHODE
Flux capacitor
he doesn't need to make a CRT omg, there are enough of them in the trash...
Who is up for a volume antenna theamin
Yeah WHY do almost ALL of these DIY theremins lack the volume antenna? >_< How the hell are you supposed to play these if you can basically only play one long note?
@@KRAFTWERK2K6 Its another theremin+freq to voltage converter+voltage controlled amplifier so yeah
@@KRAFTWERK2K6until then I guess you can connect it to a switch of some sort
@@audiodood or a volume knob. That would be the simplest solution.
@@KRAFTWERK2K6 yeah but a key-like switch or something would probably be easier to adjust quickly; maybe connect it to an AREG or something to get a nice fade in/out
Love the content! 👌 :D
you know using a radio as a hammer usual stuff :)
finally iv'e always wanted to make one
Another amazing video: )!!!
Please do put the materials required in the description!
thanks for the capacitor codes it makes it just a little bit quicker of a build
NICE really help full this video is real good to watch u learn so much
how do you connect the audio output to a guitar amp, i do not have an amplifying chip to build the other amp like in the video.
I have no idea what you just explained. I really enjoyed listening to it though great vid!
is it possible to replace the 2N5484 mosfet with a z44 mostet?
Ok i need help here. I built this with the schematic provided. All the same values down to the 2n5484 JFETs. I originally used 1 milli-henry inductors (schematic says 1mH), later replaced them with 1 micro-henry inductors. The math made more sense for 1 micros. I'm getting 0 oscillation shown on my scope anywhere, it's just passing DC. Are the FETs bad? 6vdc in, 9v battery with an lm7806. All new caps and inductors, 1% tolerance resistors, very short connections between components. I'll upload a video If I can get it going.
What was the net result?
@@darinhitchings7104 didn't work. I think the components were too close together and interfering. I never got it working.
Can i use varicap that came from old fm receiver?
Grat video, very well made and explained! Just waiting for the parts to arrive for my own attempt at building it! Thanks a lot and best wishes! :)
mine's don't work....i followed as the video.... can u show how to use connect 1/4 inch connector & pitch antenna and the power battery(9V) . i would be very appreciate if u can send some emails about connection details.....
Great Scott! Is the white coat and the goggles a reference to Dr Emmet Brown from Back to the Future? Very cool.
xD yeah, kinnda
so can i use this resonant frequency in some kind of voice voice modulator
sorry if a dumb question it just pop in my mind
I was questioned this exact term of 'Resonant Frequency' in my Practical Exam. Should've seen your video earlier!
5:00 That Epsilon in the formula is not the dielectric constant, but the permittivity, and that equals with the dielectric constant times the vacuum permittivity which is round about 8,9 * 10^-12 Q/Vm, so according to that you will get a capacity round about 10¹¹ times lower than with your explaination. Really interesting project though👍
Hi,thank you for this channel
Can u make a AM/FM jammer for the AM/FM transmitter you made in an earlier video?
That's illegal...
What is the value for the variable capasitor
Can you tell me the functioning of desktop Tesla coil you made as I should explain the functioning in science fair.I hope you'll make a video about that.
Could you do a transformer safety video please? I've been really wanting to use two transformers I have but don't feel safe using it. thanks
Jack Kaddy common sense and back of the envelope math will do
Keystone i saw you at the grant thomson meet up in oahu. I remember because you said to your friens that you had a new shirt for your channel
haha yeah xD
And for those of you out there who are overwhelmed.. Just forget the math. (Just think input and output - what do you need to put in, and what do you want out.) Look at the components. Orient the transistor correctly. Understanding the white breadboard will be clear once you ohm it out, or you can use a battery and a small light bulb. The "plus" and 'minus' run straight down the length of the board like 2 wires. They run on both sides for convenience. The horizontal holes that he mounts the components to are separate horizontal "share" wires that attach to nothing, and must be jumped to get power. You WILL get used to a breadboard and it will become clear with time.
stupid question but how did u connect the theremin to the guitar amplifier?
You buy a plug that's e.g. 1/4 in stereo male on one side and that has a barrel that you can unscrew and solder wires onto on the other. Then you solder the wires coming off of the theramin to that plug. Or better yet, attach the ends of the theramin to a male plug and buy an extension cable that's 6 ft long or whatever to plug it into the amp. Make sure you're plugging it into a mic input not a line in or else you'll kill the battery of the theramin within a few minutes. And you may need a dedicated power source anyway instead of a battery. I'm not sure how much current a guitar amp's mic input will draw, but it's probably too much for a 9V battery. In which case you can build a power suppy for it with an LM317 voltage regulator. See the circuit in the book Getting Started in Electronics by Forest E Mims III or else just google how to build a power supply with a voltage regulator. And then sub out the 9V battery.
Anybody know what to study if you want to get into making your own synthesizers such as this one? I'm very interested in learning this kind of stuff. I'm not great at math though.
This sounds really good. It just lacks a volume antenna to become a perfectly serviceable instrument.
How did you learn all of this?
0:43 theres literally a hammer on the table
Max Mick I see no hammer
With in two seconds of this video my eyes went over to the suggested videos
Oh... a Theremin...WOW!! all this time I've been calling it the Star Trek instrument