“MyGeiger” second edition is a premium quality Do It Yourself Geiger Counter Kit with PIC18F2550 and LCD Shield. MyGeiger 2.0 kit has unique combination of excellent technical parameters, easy assembling process for DIY soldering, low power consumption and USB logging function. This kit can be used for portable field measurements or for computer monitoring stations.
The kit has carefully crafted electrical circuit with redesigned high voltage section, high quality LCD shield, built-in USB connectivity and built-in lithium battery charger. The kit has low power consumption and wide compatibility with many popular 400V and 500V Geiger tubes. Default software pre-set is for SBM-20 and STS-5 tubes, but you can change parameters for any other compatible Geiger tube in calibration menu.
MyGeiger ver.2.00 has great stability under high radiation load. With SBM-20 tube it can measure nuclear gamma radiation intensity from 0.01uSv/h up to 1000 uSv/h. The dose value on display can be presented in Sievert or Roentgen units.
Built-in logging option allows you to log CPM (counts per minute) radiation data directly to your computer with our freeware software Radiation Logger for PC.
Even all components for DIY soldering are DIP through hole, this kit is not recommended for complete novice because you have to recognize components polarity and you have to read user PDF manual and understand electrical circuit principles. To make kit assembling and soldering you are required to have all soldering tools available, such a solder station, flux, solder wick, lead solder wire and flux remover. If you feel that soldering is not what you can do by yourself we are offering assembling service for additional cost.
Geiger tube is not included in default kit package, but you can add tube from our "Sensors" catalog or purchase GM tube in advance from different supplier. Important note that only SBM-20 or STS-5 tube can be installed into PCB clips, other tubes will require wire connection.
Because the kit developed mostly for DIY project, you'll need to find a proper enclosure for your counter and supply 3.7V compatible Lithium battery.
SD Logger+ Add On:
We offer SD logger upgrade option for LCD Shield. SD Logger+ addon will write to micro SD a log file with CPM data exactly as it comes from main processor. Depend on MyGeiger logging settings, the kit sends CPM value or Bq/cm2 results each 5 seconds.
SD Logger+ addon has open source code based on Arduino IDE compiler. Because most of the operating time Atmega328 enter idle sleep mode, the power consumption of MyGeiger kit with SD Logger addon is still stay low. SD Logger adds only 1.5mA-2.0mA to the total power consumption. When serial data is transferred from the main PIC18F2550 uProcessor to the USB output, Atmega328 enter active state for several micro seconds and writes same data to the SD card. If SD card is missing, or if you do not need SD log function, you can power down SD logger by removing LOG JMP jumper.
External Probe Add On:
Some DIY dosimeter projects requires additional external probe. We developed HV Geiger Probe Module addon for building high performance external GM driver. The module is fully compatible with MyGeiger kit and others DIY Geiger Projects. The addon module can be used for building pancake probe with long signal cable. High voltage for tube is generated locally on module PCB when it powered with low VDD DC voltage. Tube TTL digital signal output is buffered and can drive long cable. An audio cable with Left+Right and GND conductors can be used to connect the probe to Geiger Counter project. L+R intended for 3.7V VDD and TTL signal line when GND have to be shield conductor of the cable.
Want to buy a Geiger counter kit from RH Electronics, but don’t know what to choose? This short article should help you to select the DIY kit model from our stock. It also has several general answers for the questions people usually asking before they buying a Geiger counter.