Gamma Spectrometry Forum

Code: Select all

/*
  Enviroinmental Radiation Monitor

  HARDWARE CONNECTIONS:
    A) Connect Geiger PCB INT output to Arduino pin 2.
    B) Connect  Geiger PCB & Arduino grounds together.
    C) Ensure C-INT (103, 0.01 uF) is soldered on the Geiger PCB.

  Velleman (Adafruit) data logging shield; SD card attached to SPI bus as follows:
    MOSI - pin 11
    MISO - pin 12
    CLK  - pin 13
    CS   - pin 10

    Code from Brian K. Gauger is used
*/

#include <SPI.h>
#include <SD.h>

#include "RTClib.h"
RTC_DS1307 rtc;

#define ZP_1221 //Which GM tube is to be used

#ifdef SBM_20
#define CONV_FACTOR 0.0057   // Counts to uSv/hr multiplier for the SBM_20 tube
#endif

#ifdef ZP_1221
#define CONV_FACTOR 0.0012   // Counts to uSv/hr multiplier for the ZP_1221 tube
#endif

const int chipSelect = 10; // for the SD logger shield
unsigned long counts; // number of raw GM Tube events

// Interrupt handler that counts raw events from Geiger Kit
void tube_impulse() {
  counts++;
}

void setup()
{
    
  counts = 0;

  // Initialize Serial communication
  Serial.begin(9600);

  pinMode(2, INPUT);              // Set pin 2 up for GM tube event interrupts
  digitalWrite(2, HIGH);           // Use internal pullup resistor

  attachInterrupt(0, tube_impulse, FALLING);

  // Initialize SD card
  Serial.print("Initializing SD card...");

  // RTC setup
  if (! rtc.begin()) { 
    Serial.println("Couldn't find RTC");
    while (1);
  }

if (! rtc.isrunning()) {    // If the date and time must be adjusted when the rtc is running, the "!" should be removed
  // following line sets the RTC to the date & time this sketch was compiled
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));   

  // For January 21, 2014 at 3am you would call:
  // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0)); 
  }
  
  // See if the SD card is present and can be initialized (max 2GB):
  if (!SD.begin(chipSelect)) {
    Serial.println("Card failed, or not present");
    // don't do anything more:
    while (1);
  }
  Serial.println("card initialized.");
  Serial.println();
  Serial.print("Please stand by for 10 min for first reading...");
  Serial.println();
}

void loop()
{
  // Real time
  DateTime now = rtc.now();

  // Elapsed time
  static unsigned long then;
  unsigned long currentMillis = millis();

  // Approximate radiation level in microsieverts
  double uSv;

  if (currentMillis - then > 600000) { // 10 min averaging period (600000 ms)
    then = currentMillis;
    if (counts) {                     // i.e., if (counts != 0)
      uSv = (counts / 10) * CONV_FACTOR;
    } else {
      uSv = 0;
    }
    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.day(), DEC);
    Serial.print(" ");
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print("  ");

    Serial.print("CPM: ");
    Serial.print(counts / 10);
    Serial.print(", uSv/hr: ");
    Serial.println(uSv, 2);           // Display 2 decimal places

    // Open the file for logging. Only one file can be open at a time,
    // so this one have to be closed before opening another.
    File dataFile = SD.open("datalog.txt", FILE_WRITE);

    // If the file is available, write to it:
    if (dataFile) {
      dataFile.print(now.year(), DEC);
      dataFile.print('/');
      dataFile.print(now.month(), DEC);
      dataFile.print('/');
      dataFile.print(now.day(), DEC);
      dataFile.print(" ");
      dataFile.print(now.hour(), DEC);
      dataFile.print(':');
      dataFile.print(now.minute(), DEC);
      dataFile.print("  ");

      dataFile.print("CPM: ");
      dataFile.print(counts / 10);
      dataFile.print(", uSv/hr: ");
      dataFile.println(uSv, 2);         // Log 2 decimal places
      dataFile.close();
    }
    // If the file isn't open, pop up an error:
    else {
      Serial.println("error opening datalog.txt");
    }
    counts = 0;
  }
  delay(100);
}

Code: Select all

/*
  Enviroinmental Radiation Monitor

  HARDWARE CONNECTIONS: 

    RH Electronics Geiger Counter Kit
    INT - pin 2.
    (Ensure C-INT (103, 0.01 uF) is soldered on the Geiger PCB) 

  DS3231 RTC module is connected as follows:     
    SDA - dedicated SDA pin or analogue pin 4
    SCL - dedicated SCL pin or analogue pin 5
 
  SD card module attached to SPI bus as follows:
    MOSI - pin 11
    MISO - pin 12
    SCK  - pin 13
    CS   - pin 10


  Connect all the GND and VCC(5V) to the respective arduino GND and 5V pins

  Contains code from Brian K. Gauger
*/

#include <SPI.h>
#include <SD.h>
#include <DS3231.h>		// http://www.rinkydinkelectronics.com/library.php

// Init the DS3231 using the hardware interface
DS3231  rtc(SDA, SCL); 

#define ZP_1221 //Which GM tube is to be used

#ifdef SBM_20
#define CONV_FACTOR 0.0057	// Counts to uSv/hr multiplier for the SBM_20 tube
#endif

#ifdef ZP_1221
#define CONV_FACTOR 0.0012   	// Counts to uSv/hr multiplier for the ZP_1221 tube
#endif

int pinCS = 10; // Pin 10 on Arduino Uno for the SD logger CS
unsigned long counts; 		// number of raw GM Tube events

// Interrupt handler that counts raw events from Geiger Kit
void tube_impulse() {
  counts++;
}

void setup()
{
    
  counts = 0;

  // Initialize Serial communication
  Serial.begin(9600);
  
  pinMode(pinCS, OUTPUT);		// Set pin 10 (as defined above) for the SD logger CS
  pinMode(2, INPUT);			// Set pin 2 up for GM tube event interrupts
  digitalWrite(2, HIGH);		// Use internal pullup resistor

  attachInterrupt(0, tube_impulse, FALLING);  //define external interrupts 

  // Initialize SD card
  Serial.print("Initializing SD card..."); 

  // Initialize the rtc object
  rtc.begin();
  
  // The following lines must be uncommented to set the day-of-week, date and/or time
  //rtc.setDOW(THURSDAY);		// Set Day-of-Week to Wednesday (NOTE: Setting only the date, will not automatically set the proper DOW!)
  //rtc.setTime(22, 0, 0);		// Set the time to 22:00:00 (24hr format)
  //rtc.setDate(7, 5, 2020);		// Set the date to 14th May , 2020 (DD-MM-YYYY)
  // After setting day-of-week, date and/or time, the program must be uploaded again with the setting lines commented (//)  
 
  
  // See if the SD card is present and can be initialized (max 2GB): 
  if (!SD.begin(pinCS)) { 
     Serial.println("Card failed, or not present");
     // don't do anything more: 
     while (1);
  }
  Serial.println("card initialized.");
  Serial.println();
  Serial.print("Please stand by for 10 min for first reading...");
  Serial.println();
}

void loop()
{
  // Real time
  //DateTime now = rtc.now();

  // Elapsed time
  static unsigned long then;
  unsigned long currentMillis = millis();

  // Approximate radiation level in microsieverts
  double uSv;

  if (currentMillis - then > 600000) { 	// 10 min averaging period (600000 ms)
    then = currentMillis;
    if (counts) {                  	// i.e., if (counts != 0)
      uSv = (counts / 10) * CONV_FACTOR;
    } else {
      uSv = 0;
    }
  
  // Send Day-of-Week
  //Serial.print(rtc.getDOWStr());
  //Serial.print(" ");
  
  // Send date
  Serial.print(rtc.getDateStr());
  Serial.print(" ");

  // Send time
  Serial.print(rtc.getTimeStr());
  Serial.print(" ");

  Serial.print("CPM: ");
  Serial.print(counts / 10);
  Serial.print(", uSv/hr: ");
  Serial.print(uSv, 2);           // Display 2 decimal places
  Serial.println();
  
  // Create/Open the file for logging. Only one file can be open at a time, 
  // so this one have to be closed before opening another.
  File dataFile = SD.open("datalog.txt", FILE_WRITE);

  // If the file is available, write to it:
  if (dataFile) {
      //dataFile.print(rtc.getDOWStr());
      //dataFile.print(" ");
      dataFile.print(rtc.getDateStr());
      dataFile.print(" ");
      dataFile.print(rtc.getTimeStr());
      dataFile.print(" ");

      dataFile.print("CPM: ");
      dataFile.print(counts / 10);
      dataFile.print(", uSv/hr: ");
      dataFile.print(uSv, 2);         // Log 2 decimal places
      dataFile.println();
      dataFile.close(); 
   }
    // If the file isn't open, pop up an error:
    else {
      Serial.println("error opening datalog.txt");
   }
    counts = 0;
 }
  delay(100);
}