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LEGO models my own creation MOCpages toys shop Mindstorms Geiger-counter (radioactivity detector) and printer/plotter chart recorderRobotics
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Mindstorms Geiger-counter (radioactivity detector) and printer/plotter chart recorder
The world's first real working Lego Geiger counter, and a printer to plot the recorded radiation levels.
About this creation
(My website has some more info on this project)

In answer to a DFAQ (depressingly-frequently asked question), a geiger counter measures radiation (such as the nuclear kind), it's that doohicky that makes the eerie clicks that click more rapidly when the radiation exposure becomes more intense.

To equip my solar rovers with some geological tools, I built a the world's first Geiger counter Mindstorms sensor. It detects Beta and Gamma radiation.

Topmost picture: At Brickcon, I set it up with a Mindstorms-operated Technic printer graphing the radiation level that the geiger counter was detecting. In front of the geiger counter, I put a rotating tray with four arms, each arm holding something radioactive, and the public could operate the controls to spin the tray in order to put each of the different items under the sensor.
Items included roadside granite, a household smoke detector, sand from near the first atomic explosion 60 years ago, and a naturally occurring uranium-bearing mineral.

This is the geiger counter, mounted inside a modified Lego rock-raiders laser brick. The tube at the front contains the geiger-muller tube. The transparent stud on top contains a light that blinks with each event (click).

This is the printer, graphing the results of the radiation readings.

These are the controls, allowing people at the convention to operate the display and watch how the printer responds when they bring different items near the geiger counter.

Holes cut in the underside of the tube allow greater beta radiation sensitivity - unlike gamma, beta radiation is only weakly penetrating, so the plastic if left intact would partly shield the geiger tube from some of it.


 I like it 
  June 21, 2010
Legendary work! For this you should get MOC of the day! Not only have you harnessed the will to modify your Lego but you have also gone unique with this design. Make a set of instructions for people to use(meaning me and all MOCers) if we can't get a hold on school supplied Geiger Counters. I've tried raiding, asking, even getting a prac activity aprroved! Nothing works...
 I like it 
  July 15, 2009
That is very clever!
 I like it 
  January 22, 2009
how many "R"s can it go up to?
 I like it 
  July 18, 2007
i love it, it is really cool how u made the actual Geiger counter receiver/ tube out of that lego laser component. i bet u won first prize with that creation.
By Justin Fisher
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Added July 18, 2007

LEGO models my own creation MOCpages toys shop Mindstorms Geiger-counter (radioactivity detector) and printer/plotter chart recorderRobotics

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