We now ’ ve got lots of DIY Geiger counters to test out Should you ’ re more interested in the real thing. From diminutive builds that can be mounted on the top of a 9V battery into high-tech good state models with touch screen interfaces, you should have plenty of inspiration should you’re looking to kit yourself out before your next drive through the Chernobyl Exclusion Zone.

Software-wise there is the option of locking onto one network SSID or allowing the apparatus to find the system in the region. Though you re not on the market for a WiFi detector that is chirping, the code is a good illustration of how you can detect signal RSSI and act on it accordingly; a neat trick which may come at a project.
The hardware is about as straightforward as it gets, only a buzzer attached to one of those electronic pins. This project is more of a proof of concept, but it would be intriguing to observe the electronic equipment placed into a 3D printed replica of the Civil Defense Geiger counters, if it were to be developed. Maybe even incorporating an gauge that can bounce around in response to signal power.


Capitalizing on this phenomena, [Anton Haidai] has put together a quick hack which turns the ESP8266 into a “Geiger counter” to get WiFi. As opposed to discovering radiation, the gadget will start clicking to indicate strength and picks up on the most powerful WiFi signal. So will the clicking, as the signal gets stronger. It ’ s while a novelty.

There’s perhaps no sound recognizable than the frantic clicking of a Geiger counter. Not since this is a post-apocalyptic world in which everybody is personally acquainted with the performance of apparatus that were said, but because it s a frequent effect used in many films, TV shows, and video games. If that noise is heard by somebody , even if it doesn ’ t actually make sense they understand things are about to get serious.