The Geiger Counter / Radiation Logger Project
The nuclear catastrope in Fukushima (and of course Chernobyl, Harrisburgh and so on) made it clear that using radioactive materials for generating energy can and probably will end in a horrible disaster.
Very soon after the first reactor in Fukushima exploded, geigercounters were sold out eveywhere and prices soared to almost ridiculous levels. Although I do not live in or near Japan, I too wanted to have a geiger counter to monitor radioactivity myself, being prepared in the case some nuclear accident should happen in my part of the world (central Europe).
So I started researching for suitable DIY circuits on the net, testing a few of them and as none of them would fit my requirements, I designed my own circuits.
Building a basic counter that clicks is pretty easy, but such circuits will never give you detailed and reliable information on whats really going on.
It is very well suited for measuring and monitoring radioactivity in your personal environment, especially if you live near a nuclear facility or an area with high natural radon occurence.