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K61-SBM-20x2 HIRO+ plus Geiger Counterby Atomic.dave Atomic.Dave@yahoo.com

This is a one of a kind custom hand-made Geiger Counter built by Atomic.Dave. It is based on a kit designed by Johniametti (username: Brohogan) I have been building his DIY Geiger counters for over two years having built and sold

round 60 of them. All information for this kit is available at the developers website. As I have said before, this is more of ait for someone who knows a little bit about electronics but doesnt have the time or patience to build it, or would ratheromeone else do all the dirty work. Having been built by me, of course there will be some imperfections, although as mini-

mal as possible. This particular one is a culmination of all of its predecessors. It is certainly one of my more advanced kitsaving more options then all accept the Cadillac, and I will do my best to explain how to use it. Once you have used it aouple times, it will be a piece of cake.

PERATIONour Triple Pole switches- ALL OFF IN CENTER POSITION.

SELECT POWER LIGHT SOUND ALARM NULLALARM PWR/CHRG LED/BKLT SPEAKER LED/SND TONE

UP THRESHOLD ON ON/ON TONE ON/ON RESETMIDDLE TIMER OFF OFF OFF OFF

DOWN CHARGE ON/OFF CLICK ON/OFF

A. SELECT switch does 2 things. When you first power on the unit, you will see firstAtomic.Dave K61HIRO+plus V10.1

This customized first welcome window can easily be changed if you want, by doing a little programming in Arduino.efer to the DIY site for directions at the SOFTWARE section. But the default is now set to my name, Kit 61, and the sec-

nd line is the Geiger Counter name, and the version of software that the AT328 chip is running V10.1.The second window will show this:175 CPM=1 uSv/hRunning at 5.24V

The first line refers to the conversion rate of CPM to uSv/hr for your SBM-20 tube (175) this can be changed either inhe program sketch, with Arduino. The second line refers to the current voltage that your system is running at. This is a 5olt system. The 3000mAh 3.7v lipo battery is boosted to 5v with a pololu booster. Everytime you start up your GC (geigerounter) it will show you this so you will always know your current voltage.

The third window will show something like this:Alarm Set ?Now at 200 CPM

At this point, you can hit the Select button to incrementally change the Alarm threshold number. Once you stop hittinghe button and wait, it will be set to the current number shown on the screen and will stay there until you change it eithergain restarting and waiting for this part. You can also chose from units of measurement such as CPM or uSv/h for the Alarm.. POWER switch controls the power and charging of the unit. Up turns on the unit, Middle turns if off, and Down is for

when you charge the unit. When the unit is charging, the RED LED on the lower left side will remain constant RED whileharging, and when charging is complete, it will turn off. If you wish to power the unit with the USB in, and bypass the bat-ries for extended periods. Switch this power button to the middle position, and flip up the switch next to the USB port.his will allow you to power the unit with the USB power and bypass the battery for long periods I suggest using this powerource. But you might just find that using the internal battery is enough.. LIGHT switch controls the Event LED ( BLUE ) and the LCD Backlight. Up turns on both, Middle turns both off, andown turns the LED on, and the Backlight off.. SOUND switch controls the Event speaker. Up for tone mode, Middle for mute, and Down for Standard Click Mode.

More on Tone Mode later.. ALARM switch controls the Alarm LED and Piezo. Up for both on, Middle for both off, and Down for LED only on. This

makes for a silent visual alarm.NULL This button is used when running the sound in Tone mode. Its basically like a distance sensitive mode where the

loser you get to the radiation source, the higher the pitch of the beep will be. Then once you are at a chosen distance,hen you can push this button to reset the distance back to zero, and it will then restart a its lowest tone and as it getsloser, again it will raise in pitch.

EDSight away, you will hear the beeping of the piezo as your 2 SBM-20 GM tubes picks up radiation events. There are threeEDs below the LCD. The Left one is GREEN and is a system status light which comes on when starting up, and whenending data back and forth to your PC. Its basically a system OK light. If the green light ever freezes up, just restart theC, and it will reset itself. The middle is BLUE which is for radiation events and coincides with the beeping piezo which

an be muted with the mute switch. The Right one is RED for the Alarm which will only light up when a set alarm thresholdreached. The piezo for the alarm is located on top of the unit on the right side.

THER SWITCHES, BUTTONS, PORTS, DIALSNEW- Added 1 new switch to the right side of the unit next to the USB port. LEAVE THIS OFF WHEN NOT USINGUSB power to run the unit and this MUST be off in order to charge the battery. Flip this up to turn it on. Downwhen not powering the unit with the USB.

A. Starting on the left side top of the GC is the LCD contrast dial. As the LCD is used, it might get to a point for you toeadjust the contrast for it. Not a big deal, while the backlight is on, gently take a small screwdriver and turn it to the left orght until it appears to have the best contrast.

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B. Below the contrast pot on the same side is the output multi-port used for Geiger Bot (with the included G-Botable), and for Geiger Graph and RAD OSX (with the optional USB/FTDI cable) Just plug in the Geiger Bot cable into this

with the 3 conductor plug, and the 4 conductor into your iphone or ipad. Or plug the optional 3.5mm to USB cable into theort, and into a USB on your mac or PC, then follow instructions to run those programs. It also serves as an mono audioutput for silent listening with headphones, or with the included 3 conductor to 3 conductor M-M audio cable, you can runound based data logging software.

C. On the right side of the GC is the Mini USB FTDI output/input for programming in Arduino. This also is used toharge the internal Lithium Ion battery (with the power switch in the bottom position.) Or it can be used to power the GCor extended periods, however when you power it this way, I would advise to turn off the LCD backlight. But its ok to turn itn once in a while, but I wouldnt leave it on for extended periods. When uploading any new changes to the programketch, you will need to have this switch in the up position white it is plugged into your pc with the USB cable.

ISPLAY BAR GRAPH:

The display has a new bar graph style with placeholders and is much more responsive. It now updates 20 times per sec-ond. The tone is also updated at this rate when used.Auto-precision - decimals are dropped from the displayed dose rate as it gets larger.Beginning with v10.1 the LOG PERIOD can now be set to intervals of less than 1 minute. Valid settings are OFF, 2s, 3s,4s, 5s, 6s, 10s, 12s, 15s, 20s, 30s, and 1 minute intervals up to 720 minutes."Tube Select" is still suppor ted where grounding I/O pin 9 will use an alternate ratio for CPM to Dose unit. The CPM->DOSE RATIO in the menu will set and save which ever ratio is selected at the time it's used. This allows setting of boththe primary and alternate ratios.

ABOUT DOSE UNITS:The menu allows you select the name of the dose unit that appears on the display. However, to be clear, there is no

uilt in conversion between them. Instead the CPM->[DOSE] RATIO is adjusted depending on the name of the DOSEUNIT selected. For example, 175.43 is the default set for the SBM-20 with uSv as the dose unit. Suppose you pick "mR"s the dose unit name, and want to measure in milirems. ("mR" more correctly abbreviates as milliroentgens but is used toave display space.) The rem is defined as .01 seivert. Therefore, to use the same ratio that was designed for the tube,ou would multiply that ratio by 10. You would enter a CPM->[DOSE] RATIO as 175.43 x 10 or 1754.3 . Likewise if you

wanted microrems ("uR") you would divide the ratio by 10 and enter 17.54 .If you do want to use roentgens (used in older instruments) this source states that they are .96 rem in soft tissue. So

he CPM->[DOSE] RATIO for actual mR would be 175.43 x 10 x .96 or 1684.1 . (for uR it would be 16.84 )

LEASE REFER TO THE DIY GEIGER COUNTER DEVELOPERS WEBSITE FOR FURTHER INFORMATION:ttp://www.sites.google.com/site/diygeigercounter/

ARDUINO Software and Serial-USB connection information:N the cd you will find the FTDI driver and Arduino program version 1. Install both and restart your mac. Copy the Geigerketch folder to the same folder as your Arduino program is and remember where that is as that will be where you go toave your sketch everytime you make a change to it. There will also be a Library folder that will also need to be in theame folder. Just remember that the folder has to be the same exact name as the sketch name is. And also within Arduino,ou will have to go to preferences and show Arduino where your default sketch folder is.

ARDUINO SETTINGS: Brohogan Software system version 10.1 Open Arduino Open the saved sketch .ino file, connect your Geiger counter to the USB with power switch off. Verify the file by clicking the little check mark icon. Click TOOLS, and Select Board type as Arduino UNO, and select serial port as the top tty choice.Click Serial Monitor (top right looking glass icon). Set Baud rate to 9600 and you should see the CPM, uSv and geiger counter

oltage data coming up once per minute.

or more info go to website under Software section on the DIY geiger counter website. Or go to Arduino.cc

EIGER BOT SUGGESTED SETTINGS: (You may have to play with it to get it just r ight) GO TO: https://sites.google.com/site/geigerbot/

Select options Select Geiger Counter Select LND712 CS137 Adjust Conversionfactor to your tube:

123 for LND712175 for SBM-20

360 for LND7317Select I/O Settings

Auto Adjust OFF(you may need to play

with this setting)RMS Window 1

Delay Window 30Volume Thresh 20000

Ultrafast Rates ON

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OTHER SOFTWARE LINKS:ttp://www.blackcatsystems.com/GM/download.html ttp://www.imagesco.com/geiger/geiger-graph.html

EIGER GRAPH FOR PC NETWORKS: (cost is around $60. Use the OPTIONAL FTDI 3.5mm to USB cable) his is a PC only software.

HARDWARE DIY Geiger counter kit V5.1 by Brohogan, Running operating system 10.1 (2) SBM-20 Geiger Muller Tubes Power System by Seeeduino, Sparkfun and Pololu (please charge the unit until the RED light goes out)A. You can power the Geiger in a couple different ways

1. With internal Lipo battery (Power switch in UP position)

2. With PWR switch OFF (middle), USB cable plugged into USB port on RIGHT side of geiger, USB PWR switch on rightside of unit switched UP, then plug USB cable into:

a. Computer or laptop USBb. Wall charger block (included)c. Standard 5v USB Cigarette adapterd. To power and operate the unit this way for long periods, TURN OFF BACKLIGHT

OWER and OTHER SYSTEM ITEMS: This system is capable of producing 900+ volts, so be careful or you may getapped when handling the system while it is powered on.

A. Seeeduino Lithium Ion battery - 3.7v 3000mAh http://www.seeedstudio.com/depot/lithium-ion-polymer-battery-pack-3a-p-588.html?cPath=178_183 Full recharge in 3 hours, provides approximately 40 hour constant use of geiger counter with backlight off. Charge with PC/USB will take about 5 hours or more.

B. USB Lithium Polymer battery charger https://www.sparkfun.com/products/10401

C. Pololu 5V Step-Up/Step-Down Voltage Regulator S7V7F5 http://www.pololu.com/catalog/product/2119D. Sparkfun 5V FTDI Basic Breakout

https://www.sparkfun.com/products/9716

NCLOSUREimensions: New Age Enclosure - S784114 - 7.8" x 4.1" x 1.4" (not including handle or feet)ttp://www.newageenclosures.com/files/784114_r5_2.pdf

EPAIRS :the unit fails for some reason with a year from purchase, I will be more than happy to do any maintenance you need at no charge except shipping.

ACKAGE CONTENTS:n your package you will find: Geiger Counter, (3) Cables: Geiger bot 3 to 4 conductor, Audio 3 to 3 conductor, Mini USB to standard USB2 with wall charger. CD

with software and documents, Manual, RAD sticker, and extra faceplate labels. Rad samples upon request provided in micro lead pig.

ENERALas Filling Ne + Br2 + Arathode Material Stainless Steel, 50 mkm

Maximum Length (mm) 108ffective Length (mm) 91.0

Maximum Diameter (mm) 11ffective Diameter (mm) 10onnector Pin

perating Temperature Range 0C -60 to +70

WALLAreal Density (mg/cm2) 40

hickness (mm) 0.05

ELECTRICALMinimum Anode Resistor (meg ohm) 1.0Recommended Anode Resistor (meg ohm) 5.1Recommended Operating Voltage (volts) 400Operating Voltage Range (volts) 350 - 475Initial voltage (volts) 260 - 320Plateau length (volts) at least 100Maximum Plateau Slope (%/100 volts) 10

Minimum Dead Time (at U=400V, micro sec) 190Working range (mkR/s) 0.004 - 40Working range (mR/h) 0.014 - 144Gamma Sensitivity Ra226 (cps/mR/hr) 29Gamma Sensitivity Co60 (cps/mR/hr) 22Inherent counter background (cps) 1Tube Capacitance (pf) 4.2Life (pulses) at least 2*1010Weight (grams) 10

SBM-20HARD BETA and GAMMA GM DETECTOR

pecifications

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SBM-20x 2

atomic.daveRADIATION DETECTOR

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