Pages: [1]   Go Down
Author Topic: could I use arduino in place of an amplifier in basic geiger counter?  (Read 715 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 40
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I want to make a Geiger counter from scratch. I saw a blog on making one but it includes building a 1 shot pulse detector. (To detect pulses from the geiger tube.) Could I instead run the geiger tube to the arduino and tell it to beep a speaker if it receives signal? This would save a lot of trouble.
Logged

0
Offline Offline
Shannon Member
****
Karma: 132
Posts: 10508
:(){:|:&};:
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

yes, take a look at this schematic (from sparkfun): http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Sensors/Radiation/Geiger_Counter-v21.pdf
Logged

sei nuovo? non sai da dove partire? leggi qui: http://playground.arduino.cc/Italiano/Newbie

Offline Offline
Edison Member
*
Karma: 9
Posts: 1016
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

The Sparkfun Geiger counter doesn't use an Arduino. But since they use the same processor it is easy to adapt. Using an Arduino makes it even easier. The chip for USB is already on the Arduino board, and the tranformer for audio out is not needed if a piezo beeper is used.

This is the link to the Sparkfun page : http://www.sparkfun.com/products/10742
They use the LND712 Geiger tube.
This is the page for the LND712 : http://www.lndinc.com/products/711/
The LND712 need 500V (recommended operating voltage).

Anyone knows a cheaper Geiger tube ? or an alternative way to detect radiation ?
« Last Edit: June 25, 2012, 09:33:24 am by Krodal » Logged

Montreal
Offline Offline
Faraday Member
**
Karma: 30
Posts: 2602
Per aspera ad astra.
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
and the tranformer for audio out is not needed if a piezo beeper is used.
They used audio transformer to generate high voltage, not for audio output.
Quote
Anyone knows a cheaper Geiger tube ? or an alternative way to detect radiation ?
Alternative is semiconductor , "elektor" has published a series of articles, stating last year:
 http://www.elektor.com/magazines/2011/june/measure-gamma-rays-with-a-photodiode.1810862.lynkx
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 40
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset


Thank you, but I am relatively new to schematics. I know how to read and build all of the parts on the PDF, but where do they lead to? (They look like they are floating.)
Logged

Montreal
Offline Offline
Faraday Member
**
Karma: 30
Posts: 2602
Per aspera ad astra.
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Collector of Q4 has associated signal line OUT. You can see the same name at pin 32 uCPU. On arduino board it equivalent to digital pin2. 
Logged

Offline Offline
Edison Member
*
Karma: 9
Posts: 1016
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote from: Magician
They used audio transformer to generate high voltage, not for audio output....
Alternative is semiconductor , "elektor" has published a series of articles, stating last year
Thanks Magician, for the info.
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 40
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

never mind. I think it might be more simple to follow the original diagram and leave out the arduino. Thanks for the help, though.
Logged

Pages: [1]   Go Up
Jump to: