These days is better to keep an eye on what happens around you. Not only economics, politics or weather changing but also radiation level. That is the goal for this post.
As my techno credo tells, to use, each time, whatever I have on hand and buy only when there is no other solution, as so I did here.
When the Fukushima earthquake has brought, again, to world’s attention the radiations danger, the Internet was invaded by diggers for radiation stuff: the phenomenon, the detection, protection… A chilling recall of fifties and sixties when the danger was more political than this one: a combination of man-made and natural.
I found myself doing something, with more success than back in 1986, when, right after Chernobyl catastrophe, I did the same: looking for a radiation detector and I found it, eventually, with no Internet!
What I use now is an old and reliable Russian Geiger-Muller SI3BG buy-able on eBay (or other place). Looking around for stuff to match the intended application I found a dust gathering fancy light made for cars (you know, to put under the car to make it looking like a flying sauser, or so…). Inside of it is a dc-dc converter, from 12V to some high voltage, around 800V, necessary to power the glowing lamp. Applying 5V (not 12V) I was just obtaining 400V, the necessary voltage for my detector. Here is this schematic, with no details of what is inside of dc-dc converter but, out there, is plenty of this kind of schematics, on the Net.
Now comes the right moment to reveal the purpose of this project (it is almost clear from title, doesn’t it?): to be able to measure the radiation level at my venue (for the beginning indoor, during tests, and, eventually, outdoor) and to monitor it, by connecting the device to one, or another, of many Internet-of-Things data platforms.
On Exosite and Thingspeak you can see what the data is looking like. B.t.w. if you see nothing or it asks you to log-in, that translates as “Right now this is not public”.
[To be continued…]