The Simplest DIY Gieger Counter

In this video, I show you how to build a very simple Geiger counter. It can be built very cheaply. Good luck building!

[sagartzoli]

You will kill the tube quickly this way, I am afraid. The current should be limited by an 5MOhm serious resistance at the anode. The piezo has relatively high capacitance (~100pF), therefore the current will be very high during the discharge. I used a MOSFET 2N7000 + 220kOhm on the cathode side to drive a 8 ohm miniatuer speaker (and 5, 1Mhohm with short wire of course on the anode side).

[alylyshua]

Awesome video ! I'll probably be throwing this into my Pip-Boy sometime into the future !

[TheAussieRepairGuy]

A nice simple circuit, I like it, and I appreciate the hand drawn schematic and the explanation.
And I agree, a 4.7m ohm resistor would probably be a good idea to preserve the life of the tube.

[supersonictumbleweed]

Shame this guy here gets less publicity than some vacuumheads. While this isn't news it's exactly what I was looking for presented in the clearest and most concise way possible (probably). Thanks!

[unfamiliartitties]

Goddamn impressive, kid. Don't stop doing what you do. You're gonna go places without a doubt

[aheriady]

Bravoo Russia, from Jakarta, Indonesia 🎉🎉🎉🎉🎉🎉

[samscreativefarm]

Good job, I think I will make a version of this myself. I think you could make it much nicer if you incorporate an amplifier, you could use a volume pot and a tone pot or resistor to block the high pitch tone of the transformer or a filter cap might be good.

[JamesReedy]

Nice, that said you should get some uranium ore. That Americium is an alpha emitter and the glass of the tube itself is probably an impediment to much getting in. Those tubes are generally for Beta/Gamma sources, alpha is typically measured with a pancake style detector.

[acromatfpv]

Nice job! Clean looking board assembly too. 👌

[Mrsunrisezero]

This tube is very inactive. Better and tested is SM-20.(more expensive 15- 20 dollars ) I have manufactured many types of GM but better performance has SM-20. Try it.

[ripstephenhawking]

Remember Tanner that you must current limit the tube. Current spikes will occur as the tube conducts and can be destructive.

[giedriusbruzas]

3:37 "so right here is the geiger tube which i got from russia..." almost spat my tea out laughin

[zenthrosrion]

Really educational and informative! Have some smoke detector parts left over from some neutron gun experiments (that I eventually upgraded) to hopefully make it!

[MrDVMedvedeFF]

Привет) Классно получилось, только датчик СИ-3БГ измеряет такие дозы излучения, при которых жить уже не очень хочется) Без переделки схемы поставь другой счётчик: СБМ-20 (он немного побольше)

[mcdonaldscashier]

My geiger tube is flashing every time when it detects, is that a problem?

[pauljanssen]

Unfortunately a 9-volt battery doesn't carry enough amperage to run that circuit efficiently

[ivanthestrange]

Thats really cool! The thing about your recording device is that it didnt record clicks, but recorded a high pitched noise that can be heard from an old box shaped television.

[ixlrgo]

If you were to take your device to Fukushima Japan what different radioactive elements would it detect? Could you put a visual counter on the device and have it show whatever emitting element it was?
Very cool design. Thanks!

[Alphasmike]

Hi, you need resistor between HV generator and GM Tube. You need filtering capacitor in you high voltage. The tube cannot drive any speaker, you kill the tube ! Use a classic NPN to drive the speaker.

[noimnotarobotcanubeleiveit]

you dont need the 555. add a tickle winding to the transformer and the fet will self oscilate