There are quite a few geiger counter
instructables. The difference with this one is that I wanted to give it a modern interface, similar to smart phone touch screens, that anyone would feel comfortable using. The reason for this is that I want to use it as an educational tool to teach kids (and interested adults!) about radiation and how it is a natural part of the environment.
Check out the video to see what I mean.
From a technical point of view this project has a few interesting aspects.
- Interfacing a custom circuit with an existing circuit board
- Capacitive touch controls
- 7-segment LED display
- Customising microcontroller software
I don't consider this project to be too difficult if you can solder, upload Arduino code and are prepared to experiment (which is the fun part anyway!)
It's only been roughly calibrated. But the circuit is robust enough to be pretty accurate with proper calibration and perhaps some tweaks to the software.