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19 October 2016

Graphing radiation with a GMC-320 geiger counter using Cacti

by deaves

A few years ago, right after the Fukushima Daiichi nuclear disaster, XKCD released an awesome Radiation Dose Chart. Also around that time portable geiger counters became much easier to get a hold of and fairly cheap. Me being a data nerd; I researched a variety of devices and decided to get a CQ GMC-320. Its an awesome portable geiger counter that has a USB data-port on it that allows you to collect the CPM via a USB serial port. The following Cacti template and Python script is how I generated the following Graph.


Template: cacti_graph_template_gmc-320_-_cpm_values.zip

This Cacti template will import/update the following items:



Data Input Method

Data Template

Graph Template