ESP32 Brings New Features To Classic Geiger Circuit

There’s no shortage of Geiger counter projects based on the old Soviet SBM-20 tube, it’s a classic circuit that’s easy enough even for a beginner to implement — so long as t…

An Open Source Firmware For Cheap Geiger Counters

It is a time-honored tradition: buy some cheap piece of gear and rewrite the firmware to make it work better. [Gissio] managed to do just that for a cheap FS2011 Geiger counter. Apparently, the fir…

Detecting Radiation For Fun And Profit

It used to be that every well-stocked doomsday bunker had a Geiger counter. These days, you don’t have to have a big tube-based meter. You can inexpensively get a compact digital instrument t…

ESP32 Powers Fresh Take On An IoT Geiger Counter

Over the years we’ve covered many projects aimed at detecting elevated radiation levels, and a fair number of them have been Internet connected in some way. But as they are often built around…

Is Your Tape Dispenser Radioactive?

Do you have anything radioactive in your house? Most people will say no, but they are probably wrong. A host of things ranging from glow-in-the dark timepieces to smoke detectors have some amount o…