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STS-5 Dosimeter (Geiger Counter)

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3D model description

My first draft of a minimal design for a case and driver electronics for a STS-5 (CTC-5) Geiger-Müller tube. It is based around an Arduino Nano clone which drives a 0.96" OLED display, a standard 5mm LED and a 12mm Piezo buzzer. The system is powered from an 18650 Lithium Ion 3.7v cell, which is charged and boosted for Arduino use by a TP4056 board. The STS-5 tube requires low current 400VDC, which is provided by a HIA4V1 DCDC step up board, powered by the same 5v as the Arduino.


18650 Cell - These can be salvaged from many sources.
TP4056 Li-Ion Charge w/ 5v Output
HIA4V1 280V-1200V Boost Converter
ATmega328P MCU
STS-5 Geiger Muller Tube
Active Buzzer
0.96" OLED Display
Slider switch
LED, capacitor, resistors, transistor, wire.

Software: Github Link.

Wiring diagrams and final build pictures to come.

  • 3D file format: STL
  • Publication date: 2020/02/05 at 04:58





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