Universal SMT DIY Geiger Counter Kit Module

Out of stock

Universal DIY Geiger Counter SMT Module with PIC16F648A

Retired Product. This product has been retired from our catalog and is no longer for sale. This page is made available for those looking for technical information.

Technical specifications:

  • Geiger Tube Compatibility: Universal
  • High Voltage: 300V-800V Adjustable through EEPROM byte
  • Full Measurement Period: 60s
  • LCD 16x2 5V HD44780 Compatible
  • Radiation Dose Range: 0.01uRn/h - 99.9mRn/h
  • Radiation Dose Range: 0.01uSv/h - 3.00mSv/h
  • CPM counting: 0-500000 cpm
  • CPS counting: 0-65500 cps
  • Conversion Factor Range: 0.0001 to 0.0250 Adjustable through EEPROM byte
  • Total Events Counting in loop 0-65500
  • LED Event Indication
  • Headphone / Audio AMP compatible
  • Radiation Logger UART compatible
  • RadMon UART compatible
  • Geiger Bot Compatible through IPod line input
  • Supply Voltage: 3.7V Li-PO Battery 300mAh
  • Supply Current: 3.5mA - 5.0mA at background level
  • USB Lipo Charge Circuit Included
  • Dimensions: 83 x 45 mm
  • Shipping Weight: 250gr
  • SKU: RH-K-GK-4


This DIY Kit based on PIC16F648A processor and includes excellent hardware and software to build small dosimeter with modern components. The kit can be used with all popular american and russian GM tubes, such as SBM20, SI29BG, SBM19, LND712, LND7317 and more. The board was intended mostly for people with previous experience in soldering SMT parts.

High voltage generated with PWM and can be adjusted from 300V up to 800V with editing eeprom byte. Conversion factor from CPM to Dose is also controlled with eeprom from 0.0001 to 0.0250

Dosimeter consume very tiny current at background that allow to use lightweight 300mAh LiPO. At background radiation it consume only 3.5mA-6.0mA when LCD backlight powered through 1K resistor. The board includes USB charge circuit for lithium battery, low drop 3.3V voltage stabilizer and negative voltage inverter for LCD contrast.    

It can be connected to computer through USB TTL dongle for our Radiation Logger software. The PIC send CPM value each 10 seconds via UART and Windows software will write csv log files on your harddrive.

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