he used a green screen filter which removes the green color thus making him look redder, but he failed to adjust the "Key color spill reduction" level which would have normalized the hue.
@@h7opolo I think more accurately what happened was the cameras auto white balance trying to compensate for all the green. Its why you should set it manually with a white card. Although this could have been fixed in post to some degree as well.
This reminds me of a funny story my Dad told me from when he was a kid, around 1940. He and a friend both built tube AM Receiver/Transmitter in/on a cigar box that they could attach a telegraph key to. They lived in the same apartment building in The Bronx, on different floors with windows facing the same way. Well, they connected their radios together via a wire strung along the outside of the building and they discovered by messing around with the tuning and telegraph key, they could change radio stations on their parents' radios on a certain frequency, just like yours. Only problem was that their connecting wire acted as an antenna that was 30-40 feet long, and they were changing people's stations in the building and then some. Guess who came a knocking?? The FCC! When they saw it was 2 kids messing around with changing their parents radios and not realizing they were affecting much more than that, they got a lecture and made them disconnect the radios from each other!! BTW, glad I'm a fast listener!
It’s been a privilege to watch this channel (and you) grow into what it is today. Refreshing to see some worthwhile, educational content within a never-ending sea of garbage. 🤙🏼
the very low power transmitters and home built receivers are really great! Low cost and also safe range ( so we can't interfere any other signals, radio stations etc.) but it is very satisfaying to build for its own something like this and having fun with it, exploring and observing really astonishing things!
I can't send letters at the moment, but I just wanted to say, I love your videos! You have inspired me to start collecting old electronics and re-using them for new projects! So far I have built a pocket taser, emp, microphone, security camera, data transfer, Bluetooth transmitter and receiver, computer and bench power supply, all from old electronics! Keep doing what you are doing and you will certainly hit that hefty 1 mil subs! :D
I was able to solve the stereo-mono conversion easily, so that there is no distortion on the mono output. The stereo signal enters via two RCA connectors, which are passed through a stereo 47K potentiometer. It goes to the 10K mono potentiometer via 2 1 uF capacitors and 2 1K resistors, and from there it can go to the mono radio transmitter via RCA output. So far, it has been successfully used on AM/LW, OIRT FM and SW radio stations.
Hey you're back! :) Glad to see someone who is my inspiration back in action :) I made the microwave gun and several other things. I even got my welding machine idea from your high voltage microwave oven transformer video for lichtenberg burns.
I've been thinking of making a radio transmitter for a guitar. Radiocomms are pretty dirty around here anyway what with a lot of people with less than legal homemade transmitters, so having a signal that will be readable within my neighborhood won't be a problem, so I might make an antenna of about 65cm possibly mounted along the strap to get some quality and get rid of some more noise.
As an amateur radio operator, I thank you for not blasting out power or using a good antenna. I've got a long dipole antenna in my backyard, kind of thing that you would use for 1/2 wavelength AM or shortwave, and it's crazy how much interference I can see. Now of course it depends on the time of day, but because devices like this are so easy to build, it's very common to see crazy interference especially in populated areas. Now if you were to use heavier-duty components, more power input, and a 1/4 wave antenna I'd bet you could get some decent distance on that. But of course this would be bad and quite illegal like you said. It's actually very trivial to direction find even a moderately weak signal, but nothing nearly as weak as what you are putting out and it's not an issue anyway because you are not creating intentional interference and keeping your power output miniscule. Again thank you for your educational and fascinating content. I am glad you are back, keep it up!
Felt a bit brief, I feel like this is transmission lines? I know it's similar property of the 1/4 wavelength rule you mentioned. But it looks at 1% of the length of the wavelength being propagated. Maybe these are two separate concepts and I need to Google it out.
hey I have been thinking about making a tesla coil and I was wondering if they high voltage capacitors you made in a video a few years back would work? I was also wanting to ask if laminating sheets could work instead of projector film to make the capacitors.
The circuit diagram of the transmitter as me a bit confused. You have the Aref pin and the A0 pin connected with a 1k ohm resistor. Assuming no significant current is running in or out of the Aref pin, both pins would have the roughly the same voltage on them. Doesn't that mean that AnalogRead(A0) would always return somewhere around 1024? (I haven't seen the code on the Arduino yet, but I imagine this would be a problem as I'm guessing the A0 pin is being used to interpret the signal from the audio input)
I've been watching your videos for a long time now and today I was watching Groundhog Day (Bill Murry) and noticed the truck LOGO! It even said KEYSTONE!
Nice video. I was expecting you to make a series fed Hartley oscillator with that huge varicap and attach the data line through the xistor, but I should have known better; we have the technology!
Oh damn, I definitely have to change some values in the code from 10 to 9khz because i don't live in Yankee land :P Other than that this AM transmitter is pretty straight forward and a really nice use of an Arduino. So i really don't need 10 meters of wire for the Antenna but just a short retractable FM antenna would work too? Because i really only need it for a short reception range.
Pretty good video. Just one point (without mentioning the AMDSB transmitter that you’ve built, as opposed to SSB), is that your resonant frequency equation should read Fr not F. Apologies for the incorrect F, my iPhone doesn’t do subscript lol. You still have a new subscriber though!
Please help me, I didn't find much difference in building an AM and PM transmitter, but how come???? Please help please please please please please🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
can you build a rf receiver that would receive 1.680ghz ? it is important it is thought to be a new alien signal transmitted every time a ufo is nearby. it is true i have seen this happen. so can you make one? and can you show us how also? thanks love your videos!
I'm writing a book that requires detailed research & analysis - and I was hoping to ask you for some of your scientific knowledge. Here is a brief section of the story: When Axel was 5 years old, his foster parents sold him to an underground criminal organisation where an evil doctor forcibly inserted a electromagnetic wireless torture-surveillance-spyware bug into one of his frontal sinuses in his skull. 40 years later, Axel has a head injury in a motorcycle accident, and when observing his skull x-ray, he finds that there is a bug in his head!! By this time, the underground criminal system, has infiltrated the global medical industry, and there is no way any government or institutional doctor will acknowledge his situation or even try and remove the bug, for fear of the criminals. If he doesn't get it out soon, it will most likely fry his brain and eventually kill him! (this is the part where I need advice). Can he just fry the bug with a home made EMP device? And what kind of technology like this torture spybug, would fit into the small cavity of a frontal sinus, and be operated remotely/wirelessly? AM - FM - MW etc.. And how could it last for so long (40 years)? The more detailed my book, the more interesting it will be for the reader. Thanks for any info.
reddest man alive tries to sell me pcbs
he used a green screen filter which removes the green color thus making him look redder, but he failed to adjust the "Key color spill reduction" level which would have normalized the hue.
@@h7opolo I think more accurately what happened was the cameras auto white balance trying to compensate for all the green. Its why you should set it manually with a white card. Although this could have been fixed in post to some degree as well.
Also... the echo.
Man. If only you knew how much my girlfriend mentions this comment to me, it’s been like 69 times thus far 😂
Power Max woah! I haven’t seen you in a while power max! How have ya been?
This reminds me of a funny story my Dad told me from when he was a kid, around 1940. He and a friend both built tube AM Receiver/Transmitter in/on a cigar box that they could attach a telegraph key to. They lived in the same apartment building in The Bronx, on different floors with windows facing the same way. Well, they connected their radios together via a wire strung along the outside of the building and they discovered by messing around with the tuning and telegraph key, they could change radio stations on their parents' radios on a certain frequency, just like yours. Only problem was that their connecting wire acted as an antenna that was 30-40 feet long, and they were changing people's stations in the building and then some. Guess who came a knocking?? The FCC! When they saw it was 2 kids messing around with changing their parents radios and not realizing they were affecting much more than that, they got a lecture and made them disconnect the radios from each other!!
BTW, glad I'm a fast listener!
Wow! You came back! This video has exactly what i need!
you're the person who got me into electronics! thank you!
It’s been a privilege to watch this channel (and you) grow into what it is today. Refreshing to see some worthwhile, educational content within a never-ending sea of garbage. 🤙🏼
The infamous Tomato Man and his AM Transmitters
Glad to see your officially back, watched a few of your streams when you were still in college. Nice work :) and congratulations on graduation.
Congraduations?
the very low power transmitters and home built receivers are really great! Low cost and also safe range ( so we can't interfere any other signals, radio stations etc.) but it is very satisfaying to build for its own something like this and having fun with it, exploring and observing really astonishing things!
Who was disappointed that he didn't play his theme music like he has done previously. We love you mate!!
the am antenna is a ferrite bar inside the radio. the fm radio antenna is on the outside.
I'm so happy you're back
I can't send letters at the moment, but I just wanted to say, I love your videos! You have inspired me to start collecting old electronics and re-using them for new projects! So far I have built a pocket taser, emp, microphone, security camera, data transfer, Bluetooth transmitter and receiver, computer and bench power supply, all from old electronics! Keep doing what you are doing and you will certainly hit that hefty 1 mil subs! :D
Your explanation in this video is better than the other's where you show how to build a crystal radio.
... this is the first video that I 'liked' (button click) after just watching the commercial you did for your sponsors ... and now I'm subscribed too!
YAY YOU ARE BACK, I didn’t want another Greek gadget guru incident.....
I was able to solve the stereo-mono conversion easily, so that there is no distortion on the mono output.
The stereo signal enters via two RCA connectors, which are passed through a stereo 47K potentiometer. It goes to the 10K mono potentiometer via 2 1 uF capacitors and 2 1K resistors, and from there it can go to the mono radio transmitter via RCA output. So far, it has been successfully used on AM/LW, OIRT FM and SW radio stations.
Hey you're back! :) Glad to see someone who is my inspiration back in action :) I made the microwave gun and several other things. I even got my welding machine idea from your high voltage microwave oven transformer video for lichtenberg burns.
I've been thinking of making a radio transmitter for a guitar. Radiocomms are pretty dirty around here anyway what with a lot of people with less than legal homemade transmitters, so having a signal that will be readable within my neighborhood won't be a problem, so I might make an antenna of about 65cm possibly mounted along the strap to get some quality and get rid of some more noise.
I am glad you are back.....
Next project please make an homemade variable capasitor bro
Yoo boiisss keystone is back....
thank you for this video ! i'll make this project for my science exhibition at school !
You were one of Thanos' color there for a bit.
"Spicy." Sir, you had me at "you're watching Keystone Science."
Last time I checked one of your videos,your channel had 50-60k subs, and now 200k. Time flies like a f***ing bee
As an amateur radio operator, I thank you for not blasting out power or using a good antenna. I've got a long dipole antenna in my backyard, kind of thing that you would use for 1/2 wavelength AM or shortwave, and it's crazy how much interference I can see. Now of course it depends on the time of day, but because devices like this are so easy to build, it's very common to see crazy interference especially in populated areas. Now if you were to use heavier-duty components, more power input, and a 1/4 wave antenna I'd bet you could get some decent distance on that. But of course this would be bad and quite illegal like you said. It's actually very trivial to direction find even a moderately weak signal, but nothing nearly as weak as what you are putting out and it's not an issue anyway because you are not creating intentional interference and keeping your power output miniscule. Again thank you for your educational and fascinating content. I am glad you are back, keep it up!
What would happend if someone uses spark gap transmitter
hahaha what a beautiful advertisement
The oscilloscope is mesmerizing
This is work great with the crystal radio!
Felt a bit brief, I feel like this is transmission lines? I know it's similar property of the 1/4 wavelength rule you mentioned. But it looks at 1% of the length of the wavelength being propagated. Maybe these are two separate concepts and I need to Google it out.
I made this and it works great. Inside my room. Outside my house, as far as the swamp, doesn't reach that far.
Nice!
Thank you!
If you ever need growlights....
Ill send you some!
What are the odds? I was just watching ur previous video.
Love the lighting swing.
Glad your back making vids!
Awesome editing !!!
i personally enjoy your videos
very useful Video!
Wearing a lab coat adds +100 scientist points
❤❤❤
hey I have been thinking about making a tesla coil and I was wondering if they high voltage capacitors you made in a video a few years back would work? I was also wanting to ask if laminating sheets could work instead of projector film to make the capacitors.
The circuit diagram of the transmitter as me a bit confused. You have the Aref pin and the A0 pin connected with a 1k ohm resistor. Assuming no significant current is running in or out of the Aref pin, both pins would have the roughly the same voltage on them. Doesn't that mean that AnalogRead(A0) would always return somewhere around 1024? (I haven't seen the code on the Arduino yet, but I imagine this would be a problem as I'm guessing the A0 pin is being used to interpret the signal from the audio input)
Can you Make an oscilloscope using Arduino. (Making sure it has high input impedance)
I bloody love you man!
I've been watching your videos for a long time now and today I was watching Groundhog Day (Bill Murry) and noticed the truck LOGO! It even said KEYSTONE!
You are so smart. I didn't understand all of it. Like your video.
I like your work man !!! Keep it up , hopefully you get more subscribers !!!
Nice video. I was expecting you to make a series fed Hartley oscillator with that huge varicap and attach the data line through the xistor, but I should have known better; we have the technology!
Awesome video! I’ve been a long time viewer and was wondering when you would make an in depth video talking about AM or FM radio 📻
When are you going to make the video on the Large Tesla coil
Oh damn, I definitely have to change some values in the code from 10 to 9khz because i don't live in Yankee land :P Other than that this AM transmitter is pretty straight forward and a really nice use of an Arduino. So i really don't need 10 meters of wire for the Antenna but just a short retractable FM antenna would work too? Because i really only need it for a short reception range.
Oh this was exactly what I was doing
Pretty good video. Just one point (without mentioning the AMDSB transmitter that you’ve built, as opposed to SSB), is that your resonant frequency equation should read Fr not F. Apologies for the incorrect F, my iPhone doesn’t do subscript lol. You still have a new subscriber though!
I don't have the display screen.. Can i build this circuit without that display screen that you have used in video?? Plz reply
Yay hes back!
Can you build a radar detector? 🤔
Is it the same for FM? what needs to change?
Pirate radio time
Wow thank you sir. PCB I would love it ♥️3oak🖤
Please help me, I didn't find much difference in building an AM and PM transmitter, but how come???? Please help please please please please please🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
can you build a rf receiver that would receive 1.680ghz ? it is important it is thought to be a new alien signal transmitted every time a ufo is nearby. it is true i have seen this happen. so can you make one? and can you show us how also? thanks love your videos!
Analog AM right?
I'm getting (no matching function for call to'Adafruit_SSD1306::Adafruit_SSD1306(int, int, TwoWire*, int)') error.
Hi. I want to make the AM transmitter. I need a link where I can find the diagram and the list of parts. Ion
Nice veiled way to say sorry. Did the person responded back ?
Play alien sounds on a popular am radio. If that exist.
just lay out a really long wire and use it as an antenna tho
Easy to build shortwave radio transmitter
This can be done with a rpi3-B
Ah sounds like crap, I love it! I gotta make one of these, I'll follow your Instagram. Thank you for the great video, I'm glad you're back.
Can you send the circuit boarded ?
you can do the ace at 9khz from 531khz to 540,549,558 ..... up to 1611? what should i change in the arduino code? Thank you so much ..
Also up to 1701 kHz for Australia, Guam, Saipan and the Philippines
Thanks for all the videos could you make metal detector
very nice
420khz, nice
I am so miss your video
Can we still expect the Codys lab collab?
how can i make an analog tv transmitter?
would love to see some SSB
I think I know how make a ionic metal detector, but l need some one builds their it's circuit.
can yo do this
Hey keystone, what do you study in college ??
BTW nice video
Why do you look like a cooked lobster in the intro?
I had to adjust the lighting for the green screen chroma key to work well :P
@@KeystoneScience good I was afraid you'd gotten sun poisoning or something. 😀
cool video
*Bumps up power drastically creating a jammer...*
so thats how you build a jammer... could you disrupt drones though?
Sir where are you from, I'm big friend.
16mhz is the cpu speed of the arduino
Hey ! How to Make a Multi-Freq .
Transmitter
Hit like & Make Him Sees
Song name pls
try to make fm transmiter
Hi
Hello ;)
Have a good day!
And I think I was first!
But don’t quote me on that
When you're making SSTC?
Show us how to make a 2.4ghz device from scratch, like a wifi card??
Keep in mind the am circuit in most AM radio's use a ferrite core antenna that is inside the radio
Keep in mind that the plural word radios doesn't have an apostrophe! 😉
This is going to be useful once the bombs drop
I'm writing a book that requires detailed research & analysis - and I was hoping to ask you for some of your scientific knowledge.
Here is a brief section of the story:
When Axel was 5 years old, his foster parents sold him to an underground criminal organisation where an evil doctor forcibly inserted a electromagnetic wireless torture-surveillance-spyware bug into one of his frontal sinuses in his skull. 40 years later, Axel has a head injury in a motorcycle accident, and when observing his skull x-ray, he finds that there is a bug in his head!! By this time, the underground criminal system, has infiltrated the global medical industry, and there is no way any government or institutional doctor will acknowledge his situation or even try and remove the bug, for fear of the criminals. If he doesn't get it out soon, it will most likely fry his brain and eventually kill him! (this is the part where I need advice).
Can he just fry the bug with a home made EMP device?
And what kind of technology like this torture spybug, would fit into the small cavity of a frontal sinus, and be operated remotely/wirelessly? AM - FM - MW etc..
And how could it last for so long (40 years)?
The more detailed my book, the more interesting it will be for the reader.
Thanks for any info.
FCC? I thought you were British 🤦🏻♂️
Bruh.... With that accent? No.
I'm British, he's a yank, 100%
MORE SCIENCE!!!!
Make a large musical tesla coil diy......
You don't ADD waves in AM modulation, you MULTIPLY