Pripyat - DIY Geiger Counter
Ғылым және технология
Matt Eargle shares his love for cold war technology by building a homebrew Geiger counter using an old Soviet surplus Geiger tube he happened to have lying around. Embracing a cold war mentality, once completed, his Geiger counter will resemble the CDV 700 series models that were in production from 1954 until 1974, and allow him to conquer his fears with a radiation detector. Visit element14 Presents: bit.ly/2NEsv3G
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Matt Eargle is a cold war nut who loves historical technologies. He just happens to have some old Soviet surplus Geiger tube sitting around. He’ll use it to build his own take on a Geiger counter. It will be something like an updated CDV 700 series. The original CDV-700 Series models were in production from 1954 until 1974. Later XXX series models were produced well into the 1980s. In order to build a homebrew version of a Geiger counter, he’ll need a couple of components in addition to his Geiger tube. A Geiger tube has a sealed vial inside a sealed glass tube containing an inert gas. You take that and apply a really high potential, the one he’s using is about 400 volts. When your particle comes in and strikes the nucleus of the gas inside, it temporarily ionizes that gas, just enough to allow some of that voltage through that it can be measured.
He’ll need a high voltage source to feed his tube. The cathode of the tube will run into an Arduino. Running the high voltage source through batteries will require a transformer. The transformer will require an AC current. The easiest way to create an AC current would be to create a little oscillator with 555 timers and run that into an inductor. The 555 timer will set up in astable mode to produce an alternating signal at 60 Hz that will get amplified by a MOSFET before running into the transformer. The current from the transformer will go into a diode laddering system which will drive the GM tube. The signal from the Geiger tube will run into an NPN transistor. The output pulse of the tube is around 200V, so it needs to have some level of conditioning before it can be counted by the Arduino. Once the output is run into ground they’ll have a digital signal that they can feed back into the Arduino.
He tests the circuit in a breadboard to make sure it works. The output of the Geiger tube is hooked into an oscilloscope. Matt uses an old aircraft instrument, an ADF with a glow in-the-dark radium dial to test to ensure that a signal is outputted to the scope. Now that we know the signal is working, we can condition that signal to create a digital pulse that we can measure and count with the Arduino. The tube output runs through a voltage divider so that it doesn’t fry the transistor. All that’s left is to 3D print some parts and do some coding using the Arduino IDE.
Пікірлер: 78
We never enable monetisation on the videos btw, we just keep getting flagged for copyright for the music we use (even though we pay for it already, sigh) if you want to see less intrusive adverts on the videos introduced by youtube because of this then we're open to suggestions for music or audio suppliers or otherwise that don't get flagged.
@TotalMK
6 жыл бұрын
Just use royalty free music.
@MAYERMAKES
6 жыл бұрын
I'm using the KZread audio Library which never gets flagged, I can also recommedn Incompetech.com
@Keeter81
6 жыл бұрын
Yes. KZread has their own library that obviously doesn’t get flagged by their own scans. It’s full of music and sound effects.
@Dracossaint
6 жыл бұрын
TotalMK the problem about that is that music dosn't stay royality free most of the time, x company buys it and copywriter it. But x libiary never gets updated. This is also probably their issue is, it use to be legally obtainable as royality free and someone bought the rights to it and it wasn't removed/ still in useage and hence the situation as it is present
@RaisingAwesome
6 жыл бұрын
You should be able to dispute the claim on the creator studio and state your case. It might be able to get rid of the ads until its settled.
Matt is my favorite "not Ben Heck" so far.
@AirborneSurfer
6 жыл бұрын
Thanks, buddy! You're my favorite commenter so far.
@ProbeGT2
6 жыл бұрын
You're also my favorite so far. I would have like the video a little longer with more shots of you building the project. I'm also curious about that 3d printing software, it looks very very easy to use.
@AirborneSurfer
6 жыл бұрын
Thanks! We'll keep that in mind. As for the modelling software: that's just TinkerCAD. It's super simple and easy for the beginner to dive into!
This dude is super sharp and I like him! A positive criticism I would like to add is the fact that he says 'uh' frequently. When we use a filler word such as “um or uh” we are thinking verbally. In other words, we are verbalizing our thought process. Armed with this information, it is easy to realize that the best way to avoid using filler words is to pause. If you are not speaking, you can't say “um or uh”! This video was entertaining and has an informal vibe to it.
That acting sadly isn't regrettable enough :P But I'm happy to see Ben again, I was worried he'd be gone for good from this channel, I'm lucky this isn't the case.
@uebertreiberman
6 жыл бұрын
Wait, so he is gone? Like, forever? That makes me sad...
@AirborneSurfer
6 жыл бұрын
NO RAGERTS!!! Don't worry, the acting will get progressively more regrettable as this goes on!
OMG Matt....thats the new Benchmark.... I'm stunned by your shop...and of course the project! Videopgraphy on top notch!
@AirborneSurfer
6 жыл бұрын
Thanks, buddy! It's getting there. You didn't even get to see the metalworking area, library, lounge, or the rest of the clean room! 😉
@DarrynJones
6 жыл бұрын
What's with the scary "executioner octopus" on the bench? I'm having nightmares
@AirborneSurfer
6 жыл бұрын
Darryn Jones Something my shopmate is working on for Wasteland Weekend. There's more photos on my IG.
This is sweet, but I think I'll stick with an analog circuit for robustness in my build. I love your whiteboard brainstorming session! That's exactly what I do, and I learned that from my dad. Really cool.
@BenMyhillJones
Жыл бұрын
What would be the best way to do this as an analog circuit?
Great job! The one thing I wish the new show had was interactivity in the video. I loved watching Ben, but it was also great to see the team, and have him play off the team. The new format I'm sure makes that impossible for the show's main hosts, but maybe they could each have an assistant of sorts?
@MAYERMAKES
6 жыл бұрын
I can't afford to hire someone...and I would drive that person mad probably...
@BrentWilliams2
6 жыл бұрын
Oh, I figured it was Element14 who covered the cost of Karen, Felix, etc. I have no idea on how those dynamics work, however.
@BrentWilliams2
6 жыл бұрын
But as a side note, watching you drive them mad might be fun to watch!
@MAYERMAKES
6 жыл бұрын
I don't know about how Karen and Felix get paid, but if I wanted to get an assistant I'm sure I would need to incorporate them into my own company.
@AirborneSurfer
6 жыл бұрын
We're gonna need another Timmy!
Very cool project and dig the presentation! New subscriber here :)
@AirborneSurfer
6 жыл бұрын
Thanks, buddy! Welcome aboard!
Hi, nice presentation Matt, I've ordered a Geiger tube to make a detector just for fun. Hope to see more programs from you.
@AirborneSurfer
6 жыл бұрын
Thanks, Tom! It's a fun build and it's interesting to see how much background radiation we absorb every day! Might be fun to combine it with something like IFTTT to toggle light switches or other odd effects. Maybe for v2.0....
Excellent video! That's an awesome build! Simple, yet made very well! You should build more! You're good at it! People would buy those! I can't wait to build my Arduino G-M counter kit when it arrives! I have the case ready for it. I'm using the huge SBT-10A G-M tube for mine. It has a mica window, so it's capable of detecting alpha too, and lower-energy beta and gamma/X-radiation. The tube has 10 anodes! Radioactivity is an awesome hobby and area of science. I absolutely love it! I have A LOT of sources, and I love to build and repair Geiger counters! I wish so many people didn't have such an irrational fear of low-level sources or even just "radiation" itself. Ionizing radiation is EVERYWHERE. Old aircraft instruments sometimes have a higher activity, having more concentrated Radium. That ADF is an old non-directional radio beacon (NDB), probably from a WWII fighter. I have a lot of Radium sources. They're all sealed up, so no dust and little Radon escapes. Anyway, well done! Well done indeed! Thanks a lot!
Almost feel dirty watching this video. Kind of like I am cheating on Ben. Good start though, glad the channel is moving forward.
@AirborneSurfer
6 жыл бұрын
Shh...It'll be our little secret.
@BrentWilliams2
6 жыл бұрын
I think they picked two great guys to move forward with.
@AirborneSurfer
6 жыл бұрын
Brent Williams You're too kind, be sure to check out the rest of the gang at element14.com/presents!
i like his shirt
@AirborneSurfer
6 жыл бұрын
Which one? 😜👕🌴🏄
you should put a capacitor on the dial, that way the movement is less jerky nice vid!
RIP Headphone users at 2:12. That garage door is PAINFULLY loud.
At 7:17 it looks like the overhead shot is much lower resolution. I saw you guys are using Lumix cameras, I know that my Lumix ZS-110 is capable of producing REALLY sharp FHD footage, but overall this seems a bit blurry, perhaps the camera settings need some tweaking?
Looks good and great design but try adding a small capacitor to the readout to get a more stable value so the needle isn’t jumping around so much.
Nice..! like the new format (and first) ;-) good luck!
@AirborneSurfer
6 жыл бұрын
Thanks, buddy! Stick around; there's more where this came from!
Hi Matt liked your project as I am trying to build my own geiger counter but are having trouble figuring out the power supply. would be grateful if you could shier the schematic four yours.
so wait ben is still working there but not doing on the seens stuff?
The electronic part looks really good, but the case design is too simple in my opinion, you could have engeniered it better make it more original and tight. Anyway good job!
Uranium glass + UV light = X Files!
@AirborneSurfer
6 жыл бұрын
😱 #TheTruthIsOutThere #IWantToBelieve
approve of matt hes freakign weird......perfect "not ben"
@AirborneSurfer
6 жыл бұрын
Thanks...I think....
Adam Savage is that you?
probably the best not ben yet
@AirborneSurfer
6 жыл бұрын
probably the best comment yet
Robonyan!
@AirborneSurfer
6 жыл бұрын
Robonyan appears somewhere in the background of every episode. I'm thinking of making it a game to find it....
Thats a real shop with a lathe. Think the name of the show needs some work, bit too corporate!
@AirborneSurfer
6 жыл бұрын
It's a real shop with a real lathe and a real mill and a real EE bench and a real arc welder and a real snek among other real things!
Who else skip to 0:10 immediately
Why using a transformer from 5v to 220v and not a DC-DC step up high voltage?
Although I did enjoy the build of the instrument. I'm in my middle 60's born in 1951 and as a 6,7 and 8 year old we did those drills. Most of you never lived through that. Don't bet a one of you knows about the "Cuban Missile Crisis" we were literarily minutes or seconds from armageddon and it wasn't a drill. It was reality. That cute little song about duck and cover is actually haunting. I suggest you go back read a little history and don't make light of it....it wasn't very funny or cleaver then. I like your channel, actually I like it a lot and will continue to watch. But have a bit of respect for the past it can always become the future....hmmm...North Korea....for an instance
It is fkn sad that the song "duck and cover" was ever made.
Dr.Who?
How about the insane amount of microwave radiation that we are bathing in all day everyday from WiFi routers, WiFi equipped devices, Smart Meters, cellular phones, cell towers, cordless phones, baby monitors.... ?
@element14presents
6 жыл бұрын
Research into the effects of ultra-high-frequency radiation is still ongoing (900mhz , 2.4ghz, etc). From journals it isn't entirely conclusive or causative yet, though some of the articles are still being peer reviewed. So the jury's still out on that.
@azyfloof
6 жыл бұрын
There's a huge difference between ionising and non-ionising radiation. Non-ionising radiation (microwave ovens, wifi, cell phones etc) doesn't cause cancer because it doesn't have enough energy to ionise particles. Ionising radiation (gamma rays, UV etc) _can_ cause cancer.
@AirborneSurfer
6 жыл бұрын
Thanks, Azy! People tend to confuse high-frequency radiation with high-energy radiation. And even most of the ionizing radiation we experience in day-to-day life is relatively harmless--unless, like I said, you go around naked breathing radon gas and eating uranium ore all the time. Fun fact: there's actually trace amounts of (naturally occurring) uranium in my municipal tap water. It helps give Los Angeles that nighttime glow....🎆
@mat.phillips
6 жыл бұрын
Oh please. You do realise that light is "radiation" too, right? Got a lightbulb in your house.= being bathed in radiation. Every lifeform on the planet is bathed in massive amounts of 'radiation' every day. A wifi access point is not a lump of plutonium.
@ColdPie
6 жыл бұрын
The jury is in, actually. Non-ionizing radiation, like that from cell phones, wifi access points, etc, does not cause harm to humans. There is no known mechanism by which it could cause harm, so the theory is implausible to begin with. And sure enough, when properly blinded and controlled studies are performed, no difference is shown between people exposed to varying amounts of non-ionizing radiation, as you would expect. You can read more about the actual science that studied this theory here sciencebasedmedicine.org/nonsense-about-the-health-effects-of-electromagnetic-radiation/
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