timloco
has rocks in the head
Member since April 2012
Posts: 545
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Post by timloco on Dec 28, 2014 13:56:33 GMT -5
I thought it would be cool to have a geiger counter for checking rocks and after researching them and their surprising cost I thought I'd build this: www.adafruit.com/products/483But I have not pulled the trigger on that thought I'd check with you guys, does anyone have a favorite for rockhounding? Any suggestions if I get a used one off ebay?
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