![]() A power-on swith and an external beeper complete the detector. The 3D printed housing contains also the 18650-Ion Lithium battery (rechargeble) which provides the 5V power to the Arduino Nano as well as the Geiger Counter kit and 3,3V for the OLED display. The measured CPM is also displayed as micro Sievert per Hour (with a simple conversion factor of 151) The OLED display also displays the momentary measured amount of impulses (per second) and displays the measurements as a moving red bar on the display. ********* This project has been developed and produced by Pierre Pennings (December 2019), This Project is about making a handheld Geiger Counter using a ready made Geiger Counter kit, in a 3D printed handheld radiation detector, De kit is connected to an Arduino Nano that counts the number of impulses from the Geiger/Muller tube in a period of 10 seconds and then displays the average CPM (Counts Per Minute) on a 96*64 OLED color display. The complete listing is included as part of this tutorial, the ARDUINO code (see chapter 9) is provided with an ample amount of comments. The complete ARDUINO sketch for the Geiger counter comprises about 150 lines of code.
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