This is a set of high quality electronic components (total over 80 pieces) which can be used to build Geiger ionizing radiation counter according to the Geiger counter schematics publicized on the Internet.
This device is preloaded with adapted GeigerKit_Default sketch (v.10.1)
(please read more about v.10.1.1 below - at the end of the page)
Now, in addition to components displayed in the below picture, this listing also includes
one infrared receiver for menu control by any Sony type TV remote control (note: TV remote itself is not a part of this listing)
(Besides control of other parameters IR receiver allows changing CPM>uSv or uR ratio for tubes through the menu without a need to reprogram the firmware)
SBM-20 (beta and gamma)
SBT-9 (alpha beta and gamma)
SI-29BG (beta and gamma)
VA-Z-115 (beta and gamma)
Robotron 70002 (same as VA-Z-115 but less known therefore cheaper)
Philips 18504 (alpha beta and gamma)
SBT11 (alpha beta and gamma)
SBT10 (alpha beta and gamma)
SI8B (alpha beta and gamma)
In videos below you can see how the assembled kit should function (note: videos are for reference only and devices shown are not part of this listing)
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Additional 90° angled push button is included if you would like to upgrade the kit by changing the conner most LED with it and upload a newer firmware version
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The upgraded assembly looks like in the picture below (note! below picture is for reference only - kit comes unassembled, without Geiger-Müller tube or the battery)
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The set contains following parts:
one 220KΩ resistor (tolerance:± 1%; Power Rating:125mW)
one 3,9KΩ resistor (tolerance:± 1%; Power Rating:125mW)
one 330Ω resistor (tolerance:± 1%; Power Rating:125mW)
two 100KΩ resistors (tolerance:± 1%; Power Rating:125mW)
one 100Ω type 3296W multiple-turn potentiometer
one 1MΩ resistor (tolerance:± 1%; Power Rating:125mW)
one 4,7MΩ resistor (tolerance:± 1%; Power Rating:125mW)
four 1,5KΩ resistors (tolerance:± 1%; Power Rating:125mW)
two 470KΩ resistors (tolerance:± 1%; Power Rating:125mW)
one 27KΩ resistor (tolerance:± 1%; Power Rating:125mW)
one 10KΩ resistor (tolerance:± 1%; Power Rating:125mW)
one 18 KΩ resistor (tolerance:± 1%; Power Rating:125mW)
one 10KΩ ype 3296W multiple-turn potentiometer (for LCD contrast)
one 100μF/10V (5x7mm) electrolytic capacitor
one 10μF/50V (5x7mm) electrolytic capacitor
one 1nF capacitor (tolerance: ± 10%; 50V X7R multilayer ceramic)
two 0,01μF/1kV capacitors (tolerance: ± 20%; 1000V radial ceramic 7mm)
one 330pF capacitor (tolerance: ± 10%; 50V X7R multilayer ceramic)
four 0,1μF capacitors (tolerance: ± 10%; 50V X7R multilayer ceramic)
one 22nF capacitor (tolerance: ± 10%; 50V X7R multilayer ceramic)
two 22pF capacitors (tolerance: ± 10%; 50V X7R multilayer ceramic)
one UF4007 diode
four 1N4148 diodes
one 10mH inductor
two 2N3904 transistors
one KSP44 transistor
one ICM7555IPAZ IC chip
one SN74ACT14N IC chip
one ATMEGA328-PU IC chip
one 78L05 regulator
one 16MH crystal
one 4kHz piezo buzzer
one yellow 3mm LED
one red 3mm LED
one white 3mm LED
one push button switch
one 90° angle push button switch
two TB-001 terminal blocks
one DIP8 chip socket
one DIP14 chip socket
one DIP28 chip socket (high precision narrow)
one 9V battery connector
three 6-pin female headers
one 4-pin square female header
one 4-pin female header (without 2 center pin contacts)
one 2-pin female header
one 6-pin 90° male header
seven 2-pin male headers
five 2-pin jumpers
four 6-pin male headers
one 4-pin mail header
one 1-pin male header
one 38kHz IR receiver
one HD44780 16x2 characters LCD module black-text-on-green-background (with backlight current draw is 21mA).
note: white-text-on-blue-background LCD is available upon request (this LCD is to be always operated with backlight - current draw is 21mA)
one USB <-> TTL serial adapter for connecting to PC (based on SILABS 2102 chip)
one two-sided PCB for the Geiger counter
Boards and set of components are sold "as is". I shall include a silk screen image printed on an ordinary sheet of paper so you can see how parts should be placed ( I did not order it from the factory on the board itself to get manufacturing cheaper). I shall also include schematics for the geiger counter as well as for the LCD shield, assembly instructions, pictures etc. which shall help you to assemble your geiger counter and LCD shield.
note: the ATMEGA328-PU already contains boot-loader and software loaded.
note: kit is preprogrammed fro SBM-20. If you intend to use other tube please tell in advance and I shall program in the correct CPM -> Equivalent Dose Rate ratio.
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Version 10.1.1 features:
Alarm threshold settable at power-on (retained in eeprom).
Alternate display (by press of the button)
A "quick response" bar graph (search aid)
menu controllable by any Sony type IR TV remote (note: TV remote itself is not a part of this listing)
Alarm (optional): When the CPM exceeds a preset value, the red threshold LED shall be lit.When the CPM drops back under the initially preset alarm threshold the LED whale go off.
The alarm threshold is configured during power up. After the first few screens you will see a "Set Alarm" prompt. To preset the alarm you have to use a push button or simply let the preset function time out (in 3 sec. of inactivity) to keep the then current setting.
Pushing the button point shall start a list of alarm settings. Push the button (or hold it down) until you find the desired setting, then release the button to set that last value. After the 600 CPM setting, the choices repeat. The possible settings increment by 10 until 100 CPM and then by 50 until the 600 CPM setting. There is also a "No Alarm" setting. The chosen setting is retained in eeprom so it does not need to be set each time.
Second Screen:
The same push button used to set the alarm is used to turn on or off the second screen. The chosen screen stays on until the button is pushed again. The first time the screen is entered, the totals will begin to accumulate from zero. After accumulation has started, reentering the mode will display the totals that have accumulated.
The second screen shows values for 1 minute and 10 minute periods. While the period is in progress (time not reached) the accumulated counts for the period are displayed. (On the 10 minute line, the elapsed time is also shown on the right side.) When a given period is complete, the format of the display changes . It then becomes the running average of CPM and uSv/h for the last 1 minute and 10 minute periods. The second screen is updated every 5 seconds.
Bar Graph:
The bar graph on the first screen shows quick changes in counts to make it easier to spot trends when surveying. It has a sample rate of 1/20 of a second.
by default Output is configured for Radiation logger software (please see adaptation notes)
Other:
Adapted firmware version contains all multiple other features present in original v10.1. Please refer to the DIYGeigerCounter project site for details.
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I shall accept paypal only and send the board within one working day after the receipt of the payment.
You shall have to bear any customs or other duties and taxes of your country if any.
I shall ship the item from Europe Worldwide as a priority registered correspondence package. Please allow enough time for a shipment to arrive especially if item is sent between continents. I usually receive packages from Europe within 1-1,5 weeks and from USA or Asia 2 to 3 weeks.
Shipping to Japan is free of charge.
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