2018 m. lapkričio 8 d., ketvirtadienis

If you need a complete kit assembled or unassembled,  or just a PCB, a partial kit or even just some component,  please feel free to contact me at the e-mail address below.
Also I have in stock following geiger-muller tubes:

SBM-20  (beta and gamma)
SBM-20U (beta and gamma)
STS-5     (beta and gamma)  
SBM-21  (beta and gamma)
SI22G      (gamma)                        
SBT-9      (alpha beta and gamma)
SI-29BG  (beta and gamma)      
SBT11     (alpha beta and gamma)
SBT11A   (alpha beta and gamma)
SBT10     (alpha beta and gamma)
SBT10A   (alpha beta and gamma)
SI19BG    (alpha beta and gamma)
SI8B        (alpha beta and gamma)

Please check  THIS eBay LINK or contact me directly by e-mail :


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Best if you write to me in English,
but you are also welcome to write to me in Russian, Polish, German, Italian or French.

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Best regards!



A nice "post-apocalyptic" decal for a factory-made-ABS-enclosure by courtesy of Marc from Canada

Here for your viewing pleasure is a nice "post-apocalyptic" decal for a factory-made-ABS-enclosure by courtesy of Marc from Canada.




                                                         By the kind permission of Marc,

                   "...I've also attached the JPG of the decal if someone should want to use it. I
                   simply printed to glossy sticker paper to print it and cut it out with a blade. ..."

                                        decal artwork for your own use can be downloaded here


                                 If you need the enclosure you can get it through this post here

                                                                 or on eBay here

2018 m. liepos 10 d., antradienis

Here's a nice reuse of the geiger housing from Y1962 by Craig from Canada!


this is an project by Craig from Canada, who has installed the SMD version of electronics into the enclosure from year 1962

uses SI-8B tube







2018 m. balandžio 25 d., trečiadienis

New modification of the bottom for SI-8B (СИ-8Б) tubes of the factory made quality ABS plastic enclosure for SMD based kits

The written below concerns enclosures described in this post:

Nuclear Radiation Survey Meter in the factory made quality ABS plastic enclosure for SMD based kits (the direct purchase link inside)


Now instead only an opening for SI-8B (СИ-8Б) tube and the internal mounting bracket there is an external frame, which holds the protective net and accepts the original beta shield of the SI-8B tube.



2018 m. sausio 26 d., penktadienis

A variation of the v.11.0.2 software (hence v.11.0.2p ) which in addition provides 20μS pulses on the Arduino D19 pin (better known as A5 or SCL) when the detector event is obtained by the micro-controller's interrupt pin from the detector (for forwarding to other micro-controller electronics )



Here below are links to the variation of the v.11.0.2 software which in addition provides 20μS pulses on the Arduino D19 pin (better known as A5 or SCL) when the detector event is obtained by the micro-controller's interrupt pin from the detector (for forwarding to other micro-controller electronics )

This is not a new version but rather a sideways customisation requested by a user, who wanted to connect Raspbery Pi to the geiger counter to use geiger data for random number generation.


Here are a few videos. The first one below is visually explaining the added function. Here the pulse width was intentionally made 10mS wide so that LED flashes are visible (note! in the software linked below the pulse is nearly 500 times shorter so if LED is connected flashes will not be visible)




(here where the resistor is connected is the ground pin, and the other is the signal pin)
(some LED flashes can be missed because of non-synch with the smartphone camera while filming)




in this next video, there is an oscilloscope screen showing the actual output pulse




(for those who use other development environments or want to upload with the XLoader, utility here is a compiled hex file with preset for the NEC iR remote protocol


Arduino libraries are here (don't forget to add them to you Arduino IDE libraries):

note 1:

The new board is driven by a 10MHz crystal. Please add a new board to your Arduino IDE.
Instructions how to add this board to your Arduino IDE using the Boards Manager  can be found here: https://github.com/impexeris/Arduino-Geiger-PCB/wiki


You can buy the new SMD based Geiger counter electronics on eBay here:

http://www.ebay.com/sch/impexeris/m.html?_nkw=&_armrs=1&_ipg=&_from=

note 2: the pulse can occasionally get a longer  (i.e.35μS) if detector signal interrupt coincides with the generation of the pulse (as latter is short and generated by simple bit-bang process). This is still reasonably short as original pulses from detector are from 100 to 190μS wide due to properties of Geiger-Müllert tubes themselves. With such assumption and for convenience reason (so that existing header is used - such simple pulse generation technique was preferred to the more exact one)

note 3: due to short pulse time it is recommended to make connections using a shielded cable.
For example the microphone cable by running signal through the internal thread and connecting grounds through the shield.

2017 m. rugsėjo 25 d., pirmadienis

Enclosure for 3D printing for geiger with SBT-11 or SBT-11A tube

this is a new modification of the enclosure for SBT-11 / SBT-11A geiger tubes







Files can be downloaded for printing from 



If you nee the enclosure (just the enclosure with the power button, front protective cap and serial connector openning cap)

you can buy it by pressing on this button here
(note - the shipping price is fixed to all the locations around the World and is additional 7EUR. It will automatically be presented during the purchase procedure) :




if you would like the complete geiger counter with the SBT-11A tube in this enclosure, mini iR remote for adjusting settings and the USB adapter for connecting to the PC, you can get it right here by pressing the button below this text:
(note - the shipping price is fixed to all the locations around the World and is additional 7.5EUR. It will automatically be presented during the purchase procedure) :



Update: the protective cap


Cap-betas-shield and cap for custom shielding for SBT-11


designs have just been added to GitHub