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Introducing the Geiger Counter Kit from the Maker Shed. This kit costs a fraction of a commercial unit and it works just like you it should, blinking and clicking in the presence of radiation. It takes about an hour to build and even has a serial output for tracking radioactivity over time.

Is Grandma’s pottery or glass collection radioactive? Do bananas give off radiation? Is that granite table given to you by your mother-in-law slightly “hot?” (In my case, yes!) With this Geiger Counter Kit these questions are yours to answer. While this is a functional Geiger counter it is for educational purposes only. Please do not use it for anything important.

Michael Castor

Michael Castor

I am the Evangelist for the Maker Shed. It seems that there is no limit to my making interests. I’m a tinkerer at heart and have a passion for solving problems and figuring out how things work. When not working for Make I can be found falling off my unicycle, running in adverse weather conditions, skiing down the nearest hill, restoring vintage motorcycles, or working on my car.


  • Anonymous

    While cool, what would it take for something like a radon detector? I’d love to see what fluctuations happen over time in my attic. Granted, the cheap test kits say I’m safe, but what does that really mean?

  • Wouter Wiggers

    To bad it’s still too expensive. I want something to hook up to the interwebz and GSM so it texts me when the local nuclear powerplanet is melting, or for when China has thrown ICBMs.

  • http://profiles.google.com/ironleg Ronnie Hinton

    Here’s the deal with the countertops: http://www.nytimes.com/2008/07/24/garden/24granite.html?pagewanted=all

    TL;DR is that most granitic stone has some small amount of uranium, thorium, or radioactive potassium in it, but that the amount is negligible from a health perspective as long as your has is half-decently ventilated so radon doesn’t build up. People in areas where you need a radon detector in their basements are likely familiar with this.