Saturday, April 23, 2011

Pictures of my Geiger counter - computer interface

Here is my (experimental) Geiger Counter setup:
The FH40T Geiger Counter, with its speaker-output connected to a breadboard with PIC16F628A microcontroller and LCD and RS232 output.
The microcontroller counts the pulses from the geigercounter during a fixed interval (111.11seconds) and converts them to a value in mRem/h. The value is displayed on the LCD and sent on the RS232 port connected to a PC, which also supplies 5V DC to all circuits



On the left is a more detailed photo of the experimental breadboard setup of the Pulse counter with PIC16F628A processor / LCD / RS232.
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4 comments:

  1. katzeApril 23, 2011 at 8:30 PM

    Thank you for the pictures and the description. Very nice work!
    People may be curious about the circuit diagram and the µC sourcecode, but that may cause you a lot of work.
    Maybe a link to the datasheet of the geiger-tube will be much appreciated by your readers.
    Greetings from Germany,
    katze

    ReplyDelete
  2. radiation-goesApril 24, 2011 at 12:11 PM

    hi katze,
    thank you for the comment. I'll see what i can do to fulfill your request. stay tuned.

    regards, RadGoes

    ReplyDelete
  3. AnonymousMay 2, 2011 at 9:17 PM

    Hi,

    We did something very similar here in Geneva. Look at http://www.pachube.com/feeds/21511

    Best regards,
    Jacques

    ReplyDelete
  4. radiation-goesMay 3, 2011 at 4:21 PM

    Thanks for leaving a comment, Jacques.
    It's nice to see there are more similar activities.
    Have been able to observe any noticeable changes in CPM, caused by the
    Fukushima Nuclear disaster ?

    Best regards, RG

    ReplyDelete