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GK6+plusK101 LND7317 Geiger Counterby Atomic.dave Atomic.Dave@yahoo.com

This is yet another one of a kind, custom hand-made Geiger Counter built by Atomic.Dave. This is the

GK6-plus- a replacement to the popular full featured Cadillac Meter. It is based on a kit designed by John Gi-

ametti (username: Brohogan) I have been building his DIY Geiger counters for over two years having built

and sold about 100 of them. Much of the information for this kit is available at the developers website. This is

more of a kit for someone who knows a little bit about electronics but doesnt have the time or patience to

build it, or would rather someone else do all the dir ty work. Having been built by me, of course there may be

some imperfections, although as minimal as possible. This particular unit not only has a wireless remote con-

trol for in field programming, it also has the very sensitive pancake American tube, the LND7317.

OPERATION

Three Triple Pole switches- ALL OFF IN CENTER POSITION. With 2 green momentary switches in between.

POWER SELECT ALARM NULL SOUND

UP ON

IN ON IN TONE

MIDDLE OFF OUT OFF OUT OFF

DOWN CHARGE LED ONLY CLICK

A. POWER controls the power and charging of the unit. Up turns on the unit with internal battery power, Mid-

dle turns if off, and Down is for charging the unit. When the unit is charging, the tiny RED LED on the lower

right side below the USB port and switch will remain constant RED while charging, and when charging is

complete, it will turn BLUE. If you wish to power the unit with the USB in, and bypass the batteries for ex-

tended periods. Switch POWER to middle position, and flip up switch on lower right of unit next to the miniUSB port. This will keep the batteries unused while you power with any 5v source.

B. SELECT - momentary switch does 2 things. When you first power on the unit, you will see:

GK6-plus

LND7317 v1.10

This customized first welcome window can easily be changed if you want, by doing a little programming

in Arduino. Refer to the DIY site for directions at the SOFTWARE section. But by default it now says GK6-

plus, and the second line says the tube name and the software version. (LND7317 and v1.10)

The First window will show the info below. The first line is the current uSv to CPM conversion rate. For a

LND7317 pancake tube, the conversion rate is 345.

uSv/h=345CPM

Vcc=5.05V

Alarm=200CPM

GKLOG007.CSV

Set Alarm?

02/16/14 01:30pm

I have preset this for your Tube, but later if you wanted to you could change this rate with either Arduino,

or with the Sony wireless remote control which I will explain later. The second line refers to the current volt-

age that your system is running at. This is a 5 volt system. The 4000mAh 3.7v lipo battery is boosted to 5v

with a pololu booster. Everytime you start up your GC (geiger counter) it will show you this so you will always

know your current voltage.

Then the Current Alarm amount that is set is shown, and the blue boxed area says Set Alarm? at that

point you can push the Select button to incrementally change the Alarm threshold number. Once you stop

holding the button and wait, it will be set to the current number shown on the screen and will stay there until

you change it either again restarting and waiting for this part, or by using the included remote control to

change it. You can also choose from units of measurement such as CPM or uSv/h for the Alarm with the re-

mote. It also acts like a stopwatch starter for the scaler mode. It has two preset times of 1 minute and 10

minute averaging. You can change the second one only with the remote, or the sketch when connected to pc.

The first one (1 minute) is default and unchangeble. You can always change this later at any time without a

computer and with the remote. At the bottom of the window is todayss date and time. The system now has

an internal clock with backup battery.

Finally this select button can also be used as a mute switch when an alarm point is reached, and the

piezo is blaring, just hit this select button once and it will mute the alarm.

C. ALARM 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.

D. NULL momentary switch and works only when in Tone mode for the event speaker. When you are scanning

in Tone mode, you can push this to reset the sensing to zero as you approach a sample. . More on this later.

E. SOUND switch controls the Event speaker. Up for tone mode, Middle for mute, Down for Standard Click

Mode. More on Tone Mode later.

Two GREEN momentaryswitches are described inthese two grey boxes.

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LEDS

Right away, you will hear the clicking of the speaker as your GM tube picks up radiation events. There are

two LEDs below the LCD. The Left is GREEN which is for radiation events and coincides with the clicking

speaker which can be muted with the sound switch in middle position. The Right one is RED for the Alarm

which will only light up when a set alarm threshold is reached. It can be turned on or off with the Alarm

switch in middle position. Once again when there is an alarm threshold reached, you can alway hit the select

button to mute the piezo and shut off the RED LED if you dont want to move the sound switch to middle po-

sition.

OTHER SWITCHES, BUTTONS, PORTS, DIALS

1. GPS POWER SWITCH - used to help reduce battery life. When using this switch, I recommend turning off

the unit first.

2. USB POWER SWITCH - This is used for controlling the use of the USB 5v power that is coming thru thisport when plugged into a 5v source such as a wall charger, solar panel, cigarette adapter, laptop, or com-

puter. When up, and the power switch in the middle, this will power the unit and bypass the batteries. When

down, and power switch is down, this will charge the units internal 4000mAh 3.7v lithium ion battery. Just to

the left of the USB port is the charging LED indicator. RED for charging, and BLUE when charging is com-

plete. Protective overcharge circuitry is built into the included Lithium Ion rechargeable battery.

3. USB MINI INPUT PORT - used to connect to pc of mac for sketch editing via arduino programming. It can

also be used for radiation data logging, using Radiation Logger: http://www.rhelectronics.net/store/radi-

ation-logger.html

4. MULTIPORT- Above the GPS power switch is the MULTI-PORT used for Geiger Bot (with the included G-

Bot cable). Just plug in the Geiger Bot cable into this with the 3 conductor plug, and the 4 conductor into

your iphone or ipad. It also serves as an audio output for silent listening with headphones, or with the a 3

conductor to 3 conductor M-M audio cable, you can run sound based data logging software.

SD CARD WRITER - This meter is equipped with an internal SD card writer (FREEblank is inclluded) Always turn OFF the unit while removing or inserting the SD card.

The default auto write of all info to the card is set to 1 minute, but you can change that

easily with the remote control. When in-

serting the SD card, place the meter

back down on a table, make sure the

metal tabs on the card are up, and are

going into the slot of the meter. Do NOT

force it and gently nudge it in making

sure you are sliding it in in a horizontal

motion. It will stop when the card is

about .25 coming out of the slot as

shown in the picture left. The file that is

written to the card is saved as a .csv

file which is Microsoft Excel compatible.

INSTALOG BUTTON - The button at

the top of the meter just to the right of

the SD card. Push this and all info currently happening will be written to the SD card. Otherwise, the SD card

writer has a set time you can adjust to record at intervals- info such as Time, Date, Speed, altitude, GPS co-

ordinates, CPM, uSv/hr.

As shown in the diagram to the right, the file is broken out into columns: Date, Time, Lat, Lon, Alt(m),

Vel(km/h), CPM, uSv/h, Vcc. By copying a column(s) of data, you can make anytype of bargraph or piechart

that excel is capable of creating.

(note: when removing or replacing the silicone boot, remember to remove the SD card first, and also

be sure to avoid rubbing the INSTALOG button with boot or damage will occur to the switch, and

will need replacing.)

NEW 1.8 Serial Display 128x160 SPI TFT LCD modulew/ SD socket

Software features

A graph on the main screen shows last 13 minutes of activ-

ity and can be set to auto-resize based on peak or avg.

New dose type xBg shows the percent of average back-

ground set

Max CPM, speed and altitude (if GPS used), low battery and other info are

shown on the "status line"

3 choices for color scheme of the main screen

Bargraph on the bottom of the screen also shows activity and is very responsive

Scaler screen shows two scaler periods. Second scaler period length set by menu.

Logging to SD card and serial output. Information is saved to a .csv file that can

be opened in Microsoft Excel for mac or PC.

scaler screen

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Display menu options (these options are contolled by the remote)

SCREEN ORIENTATION screen and text adjust for 4 positions portrait or landscape

DISPLAY SCHEME set 1 of 3. (If you can upload a new sketch, its easy to change one to your own tastes.)

BRIGHTNESS - Adjust the backlight brightness

GRAPH SCALE MODE - two "Auto" modes allow the graph to update its range based on the max peak or average.

BACKGROUND CPM - the average background rate you enter is used if the DOSE UNIT is set to xBg.

TIME SETTINGS set time and date if not using a GPS also Auto DST and various time date, formats and metric or

imperial units

GPS MODULE choice of one of the four supported GPS module types (EM-406a/411, U-blox 6, Adafruit MTK3339, SkyTraq ST22)

DISP PERIOD, SD CARD LOG PERIOD, SERIAL LOG PERIOD, SCALER PERIOD settable

CPM->(unit), ALARM THRESHOLD, BARGRAPH MAX CPM, TONE SENSITIVITY - settable

GPS MODULEThis unit is equipped with an internal (Ublox NEO-6M) With its separate power switch flipped up/on, it will automatically boot up when

power up your meter. When you see the Velocity and Altitude on the lower left side of the display, you are synced.

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 built in conversio

tween them. Instead the CPM->[DOSE] RATIO is adjusted depending on the name of the DOSE UNIT selected. For example, 175.43 is t

fault set for the SBM-20 with uSvas the dose unit. Suppose you pick "mR" as the dose unit name, and want to measure in milirems. ("mR

correctly abbreviates as milliroentgens but is used to save display space.) The rem is defined as .01 seivert. Therefore, to use the same ra

was designed for the tube, you would multiply that ratio by 10. You would enter a CPM->[DOSE] RATIO as 175.43 x 10 or 1754.3. Likewis

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 the CPM->[DOS

RATIO for actual mR would be 175.43 x 10 x .96 or 1684.1. (for uR it would be 16.84)

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

ARDUINO Software and Serial-USB connection information:

ON the cd you will find the FTDI driver and Arduino program version 1. Install both and restart your mac. Copy the Geiger Sketch folder to t

same folder as your Arduino program is and remember where that is as that will be where you go to save your sketch everytime you make

change to it. There will also be a Library folder that will also need to be in the same folder. Just remember that the folder has to be the sam

name as the sketch name is. And also within Arduino, you will have to go to preferences and show Arduino where your default sketch folde

ARDUINO SETTINGS: Brohogan Software

1. Open Arduino

2. Open the saved sketch .ino file, connect your Geiger counter to the USB with power switch off.

3. Verify the file by clicking the little check mark icon.

4. Click TOOLS, and Select Board type as Arduino UNO, and select serial port as the top tty choice.

5. Click Serial Monitor (top right looking glass icon). Set Baud rate to 9600 and you should see the CPM, uSv and geiger counter voltage

coming up once per minute.

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

GEIGER BOT SUGGESTED SETTINGS: (You may have to play with it to get it just right) GO TO: https://sites.google.com/site/geige

Select options Select Geiger Counter Select LND712 CS137 Adjust Conversion

factor to your tube:

123 for LND712

175 for SBM-20

360 for LND7317

Select I/O Settings

Auto Adjust OFF

(you may need to play

with this setting)

RMS Window 1

Delay Window 30

Volume Thresh 20000

Ultrafast Ra

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HARDWARE

1. DIY Geiger counter kit GKplus by Brohogan, Running operating system 1.10

ATmega1284P processor

User Adjustable 1100v max HV

Some of the main hardware features of the GK-Plus:

- The board uses an ATmega1284P MCU with 4x the program space of the standard kit.

- A 128x160 1.8 TFT color graphic display is used.

- Improved components provide >1100V max HV.

- SD card, GPS, IR remote, and clock features from Logging Shield kit are supported.

- The HV, click, and processor areas are separated, and have their own ground planes.

- All I/O pins broken out. The board can be used as a 1284 development platform.

- Space left to replace the voltage regulator with a buck/boost reg for more power options.

Sparkfun FTDI Storage/transport case Pelican 1060

GM Tube LND 7317, with gasket riser and Stainless steel grill Ludlum SCRN/M44-9 SS

Geiger Bot ready includes FREE custom cable

Mini USB charging with multicolor status LED

Ublox NEO-6M GPS Module

POWERING YOUR GEIGER COUNTER:

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 right side of unit swit

UP, then plug USB cable into:

a. Computer or laptop USB

b. Wall charger block (included)

c. Standard 5v USB Cigarette adapter (included)

POWER and OTHER SYSTEM ITEMS: This system is capable of producing 900+ volts, so be careful or you may get zapped when

dling the system while it is powered on.

3.7v 4000mAh lithium ion, with protective circuit PCM

Lipo charger 1 cell Li-ion or LiPo based TP4056. External power supply or USB. 25 * 19 * 10mm, Charging current: 1A.

Pololu 5v up/down boost regulator #2119

ENCLOSURE - TAKACHI LCS165H-N-WL

Dimensions: 85mm X 40mm X 171mm

http://www.takachi-enclosure.com/data/c14/hand04_1401.pdf

REPAIRS:

If the unit fails for some reason with six months from purchase, I will be more than happy to do any maintenance you need at no charge e

shipping.

PACKAGE CONTENTS:

In your package you will find: Geiger Counter with LND7317 Pancake Tube with Pelican 1060 case, (2) Cables: Geiger bot 3 to 4 conduct

USB to standard USB2 with wall charger and cigarette adapter. CD with software and documents, Manual, RAD stickers, and extra facep

bels. Sony RM-EZ4 Remote control, SD card.

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LND7317

atomic.daveRADIATION DETECTOR

K90

SELECT NULL

ALARM SOUND

ALPHA

B

ETA

GAM

MA

X

-RAY

GPSAntenna

DisplayAdapter

LND7317

atomic.daveRADIATION DETECTOR

K90

ALPHA

B

ETA

GAM

MA

X

-RAY

LND7317

SELECT NULL

ALARM SOUNDPOWER

USB

LND7317

atomic.daveRADIATION DETECTOR

atomic.daveRADIATION DETECTOR

AL

PH

A

BETA

GAMM

A

X

-RAY

GPS

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+

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VCC

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RESET

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SCK

LED

Pololu2119

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EG

Up/Do

wn

LIPO

POWER

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OFF

TOS

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CHARGE

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Appendi x V - Mai n Boar d Schemat i c

( l ar g er schemat i c i n br owserh er e)