DIY Geiger Counter Kit 1.1

October 4, 2015

This is an Open Source Digital Radiation Dosimeter, that can be used both as a portable detector, but also as a monitoring station to upload readings to the uRADMonitor network. This project is an update to the previous Geiger Counter Kit 1.0. When used as a portable detector, readings are displayed on the LCD. There is also a speaker that beeps on radiation events or is used to sound an…

Read More >>

Tube: SBM-20M Small Geiger Muller

October 4, 2015

Pictures: Details: Compact Geiger Muller tube, the SBM-20M shows an excellent sensitivity for its small size. It was designed for hard beta and gamma radiation, and the particular tubes in my photos above are new generation tubes, manufactured in 2012. This is similar to the SBM-20-1, but smaller. Notes on sensitivity: The sensitivity of this tube is comparable with the SI-29BG and the SBT-9. Its small size makes it ideal…

Read More >>

The first prototype

August 7, 2015

It’s been a crazy run, trying to make this happen. After less then one month I now have the first functional hardware iteration or the first prototype. The Portable Environmental Monitor has been brought to life! All that’s left is finalising the enclosure (it will be a nice rugged aluminium enclosure, small enough to fit the palm of the hand, despite the many sensors packed inside) and the software (both…

Read More >>

Comparison of dosimeters

April 3, 2015

Like with all measurements, it will be very hard to find two different devices indicating the same readings, especially when we demand increased precision. We now know that there are no such things as absolute time, absolute space, there are no synchronous clocks. It is the same with the absolute measurements, and in some cases it’s becoming more relevant to observe the change: if we see increasing values, we know…

Read More >>

DIY Dosimeter Geiger Counter KIT1.0

March 8, 2015

Note: there is a newer version of this project, KIT1.1, see it here If I was to give this project a version number, the closest match would be the uRADMonitor model B. Finally an open source compact radiation dosimeter, that has an LCD and thus allows mobile use, but also comes with an Ethernet adapter so it can do radiation monitoring (uRADMonitor compatible). Yet, this is not quite the uRADMonitor…

Read More >>

Global radiation monitoring network

July 11, 2013

EDIT: there is a dedicated blog on this project, here. Make sure to follow it for latest news. A few days ago I announced my intention of creating my first crowd-funded project, but I didn’t tell you what was it about. Well, I’m planning quite a challenging project – to bring my uRADMonitor to a global scale, and create a network of distributed detectors, with data centralized on one server,…

Read More >>

Top 10 Radioactive Electronic Tubes

December 30, 2012

Some of these tubes contain small quantities of Cesium-137, Cobalt-60, Radium-226, Krypton-85. The radioactive elements have been added to increase the electronic response by improving the internal ionization processes.

Read More >>

DIY/Homemade Geiger Muller Clicker V1

March 21, 2011

An article presenting a simple DIY Geiger Muller counter using the Russian tube SI-22G and a single transistor regulated inverter that puts out 400V, as required by the tube. A very basic detector assembled in 5 minutes. See an operation comparison to the Radex RD1706.

Read More >>