This is a lighter version of the bGeigie Mini which is meant to fit in a Pelican Micro Case 1010.
- Arduino Fio
- OpenLog
- Adafruit Ultimate GPS
- LND-7317 geiger pancake with Medcom iRover HV board
- Monochrome 128x32 OLED screen
- 3.7V 1300mAh Lithium battery
- Pelican 1010 micro-case
| Arduino Fio pin | Target pin |
|---|---|
| VCC | VCC or Vin pin of the GPS, OpenLog, OLED and iRover (3.3v) |
| GND | GND pin of the GPS, OpenLog, OLED and iRover |
| D2 | pulse pin from the iRover |
| D3 | OLED RST pin |
| D4 | OLED CS pin |
| D5 | OLED DC pin |
| D6 | OLED Data pin |
| D7 | OLED Clk pin |
| D8 | TX pin of the GPS |
| D9 | RX pin of the GPS |
| D10 | TX pin of the OpenLog |
| D11 | RX pin of the OpenLog |
| D12 | GRN pin of the OpenLog |
- Fio: 0.045mA sleep, 6mA at run time
- OpenLog: 2mA idle, 6mA at maximum recording rate
- Adafruit Ultimate GPS: 25mA acquisition, 20mA tracking
- Monochrome OLED 128x32 0.91": 4mA 50% turn-on, 7.8mA 100% turn-on
The total current used at run time can be estimated around 36mA (= 6+6+20+4) per second which will result in a consumption of 0.01mAh (= 36mA/3600). So the total log duration if using a battery of 1300mAh will be (1300/.01)/3600 = 36.11 = 36h06m
| Battery capacity (mAh) | Estimated log duration (days hh:mm) |
|---|---|
| 1300 | 1d 12:06 |
| 2600 | 3d 00:13 |
| 6600 | 7d 15:19 |
export ARDUINODIR=/home/geigie/arduino-1.0.1/
export SERIALDEV=/dev/ttyUSB0
export BOARD=fio
cp -r libraries /home/geigie/arduino-1.0.1/
make
make upload
You can use directly the prebuilt image to flash the Arduino Fio. Here is an example with Arduino Fio connected to ttyUSB0:
/usr/bin/avrdude -DV -p atmega328p -P /dev/ttyUSB0 -c arduino -b 57600 -U flash:w:bGeigieNano.hex:i
Once powered on the bGeigieNano will initiliaze a new log file on the SD card, setup the GPS and start counting the CPM.
# NEW LOG
# format=1.0.0nano
$BNRDD,204,2012-09-20T16:53:58Z,776,63,33895,A,5641.7788,N,1411.8820,E,9861.20,A,109,9*46
$BNRDD,204,2012-09-20T16:54:03Z,771,61,33956,A,5642.2047,N,1412.9433,E,9862.60,A,109,9*4D
$BNRDD,204,2012-09-20T16:54:08Z,773,70,34026,A,5642.6305,N,1414.0053,E,9865.00,A,109,9*40
$BNRDD,204,2012-09-20T16:54:13Z,768,59,34085,A,5643.0562,N,1415.0662,E,9866.80,A,108,9*4D
$BNRDD,204,2012-09-20T16:54:18Z,765,59,34144,A,5643.4820,N,1416.1277,E,9868.10,A,108,9*4D
$BNRDD,204,2012-09-20T16:54:23Z,776,70,34214,A,5643.9077,N,1417.1884,E,9870.40,A,90,10*4E
$BNRDD,204,2012-09-20T16:54:28Z,790,69,34283,A,5644.3330,N,1418.2491,E,9871.30,A,90,10*44
$BNRDD,204,2012-09-20T16:54:33Z,792,77,34360,A,5644.7576,N,1419.3115,E,9871.40,A,90,10*41
$BNRDD,204,2012-09-20T16:54:38Z,800,73,34433,A,5645.1819,N,1420.3749,E,9872.60,A,90,10*4C
$BNRDD,204,2012-09-20T16:54:43Z,784,57,34490,A,5645.6060,N,1421.4371,E,9873.10,A,89,10*4A
$BNRDD,204,2012-09-20T16:54:48Z,787,58,34548,A,5646.0298,N,1422.4998,E,9874.10,A,89,10*40
$BNRDD,204,2012-09-20T16:54:53Z,792,76,34624,A,5646.4534,N,1423.5620,E,9874.80,A,98,9*73
$BNRDD,204,2012-09-20T16:54:58Z,804,75,34699,A,5646.8769,N,1424.6242,E,9874.30,A,98,9*74
$BNRDD,204,2012-09-20T16:55:03Z,808,65,34764,A,5647.3011,N,1425.6873,E,9877.10,A,98,9*7F
$BNRDD,204,2012-09-20T16:55:08Z,793,55,34819,A,5647.7236,N,1426.7514,E,9876.30,A,89,10*49
$BNRDD,204,2012-09-20T16:55:13Z,799,65,34884,A,5648.1464,N,1427.8159,E,9876.10,A,98,9*7F
$BNRDD,204,2012-09-20T16:55:18Z,795,55,34939,A,5648.5688,N,1428.8810,E,9877.80,A,98,9*7B
$BNRDD,204,2012-09-20T16:55:23Z,774,49,34988,A,5648.9898,N,1429.9472,E,9878.50,A,85,10*46
$BNRDD,204,2012-09-20T16:55:28Z,768,63,35051,A,5649.4098,N,1431.0137,E,9877.40,A,224,8*4A
$BNRDD,204,2012-09-20T16:55:33Z,754,63,35114,A,5649.8297,N,1432.0798,E,9876.30,A,223,8*4F
$BNRDD,204,2012-09-20T16:55:38Z,752,71,35185,A,5650.2496,N,1433.1447,E,9873.20,A,106,9*4C
$BNRDD,204,2012-09-20T16:55:43Z,753,58,35243,A,5650.6698,N,1434.2092,E,9871.30,A,106,9*40
$BNRDD,204,2012-09-20T16:55:48Z,765,70,35313,A,5651.0904,N,1435.2737,E,9869.50,A,106,9*4B
The OpenLog should start listening at 9600bps and in Command mode. Here is the content of the CONFIG.TXT file you have to create on the microSD card:
9600,26,3,2
To make sure all of the NMEA sentences can be received correctly, we will need to update the _SS_MAX_RX_BUFF definition from arduino-1.0.1/libraries/SoftwareSerial/SoftwareSerial.h header file. Here is the modification:
//#define _SS_MAX_RX_BUFF 64 // RX buffer size -- Old Value is 64
#define _SS_MAX_RX_BUFF 128 // RX buffer size for TinyGPS
- InterruptHandler and bGeigieMini code - Copyright (c) 2011, Robin Scheibler aka FakuFaku
- TinyGPS - Copyright (C) 2008-2012 Mikal Hart
- bGeigieNano - Copyright (c) 2012, Lionel Bergeret
- Makefile - Copyright (c) 2012, Tim Marston