[Henrik] really turned out a nice little Geiger counter board based on a cold war era Geiger tube.
It works in much the same way as other projects along the same lines. It does run on batteries if needed, which is no small feat since the tube wants high voltage to operate correctly. And the video after the break shows it spitting out readings to a terminal window when connected to a computer via USB.
But what really caught our eye is the radioactive source material he used for testing. Since he didn’t have anything on hand he had to order something, and ended up going with a couple shards from a dinner plate. A radioactive dinner plate to exact and it’s a brand name you’ve probably heard of before. Red Fiesta Ware apparently used to be radioactive. It’s even mentioned in the intro to the Wikipedia article. Go figure!
One other thing we noticed was [Henrik's] method of interfacing his multimeter with a breadboard. One of the project photos shows the probe with thin wire wrapped around the tip. We assume this is to make it easy to plug into the breadboard.
Despite this little digression away from the main project we did really enjoy learning about his build. And you can see him showing it off in the clip after the break.