Arduino MRTG Code

Arduino MRTG Code

First to create the Round robin Database run the following bash script

rrdcrt.sh

Upload the Arduino Sketch

Arduino Sketch

/*
 Code:           Sketch_BBArduino
 Version:        12.09.19
 Author:         Benjamin Bordonaro
 Library Credits:
 Library originally added 18 Apr 2008 by David A. Mellis
 Library modified 5 Jul 2009 by Limor Fried (http://www.ladyada.net)
 Based on example added 9 Jul 2009 by Tom Igoe
 Modified 22 Nov 2010 by Tom Igoe
Modified 22 Sept 2012 by CPYarger (cpyarger.com)
 Circuit Layout:
 * DS18B20 (temperature) data to digital pin 6
 * — LCD PINS —
 * Set LCD Pins (RS, EN, D4, D5, D6, D7)
 * LiquidCrystal lcd(7, 8, 2, 3, 4, 9);
 * X10 Pins – For future use
 * zcPin 11
 * dataPin 10
 */

#include <LiquidCrystal.h>
#include <OneWire.h>
#include <DallasTemperature.h>


// Data wire is plugged into pin 6 on the Arduino
#define ONE_WIRE_BUS 6
const int OWTPPin =  10;
const int OWTState = HIGH;

// Global Variables to turn on and off hardware control
#define LCD_ENABLE 1    // LCD
#define LED_ENABLE 0    // LED

#define EML_ENABLE 1    // Email Checking and Display
#define TMP_ENABLE 1    // Temperature Sensor Display


// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

// Set LCD Pins (RS, EN, D4, D5, D6, D7)
LiquidCrystal lcd(7, 8, 2, 3, 4, 9);

DeviceAddress ts1, ts2, ts3, ts4;
// function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
  for (uint8_t i = 0; i < 8; i++)
  {
    // zero pad the address if necessary
    if (deviceAddress[i] < 8) lcd.print(“0”);
    lcd.print(deviceAddress[i]);
  }
}

void serialReader(){
  int makeSerialStringPosition;
  int inByte;
  String serialReadString;
  String stringOne;
  const int terminatingChar = 13; //Terminate lines with CR

  inByte = Serial.read();
  makeSerialStringPosition=0;

  if (inByte > 0 && inByte != terminatingChar) { //If we see data (inByte > 0) and that data isn’t a carriage return
    delay(100); //Allow serial data time to collect (I think. All I know is it doesn’t work without this.)

    while (inByte != terminatingChar && Serial.available() > 0){ // As long as EOL not found and there’s more to read, keep reading
      serialReadString[makeSerialStringPosition] = inByte; // Save the data in a character array

      makeSerialStringPosition++; //Increment position in array
      //if (inByte > 0) Serial.println(inByte); // Debug line that prints the charcodes one per line for everything recieved over serial
      inByte = Serial.read(); // Read next byte
    }

    if (inByte == terminatingChar) //If we terminated properly
    {
      serialReadString[makeSerialStringPosition] = 0; //Null terminate the serialReadString (Overwrites last position char (terminating char) with 0
        if (makeSerialStringPosition > 1) {
          stringOne = serialReadString;
          int firstListItem = stringOne.indexOf(“|”);
          int secondListItem = stringOne.indexOf(“|”, firstListItem + 1 );
          String Line1 = “”;
          String Line2 = “”;
          String Line3 = “”;
          for (int strPos = 0; strPos < firstListItem; strPos++) {
            Line1 = Line1 + stringOne.charAt(strPos);
          }
          //Serial.println(Line1);
          lcd.setCursor(0, 0);
          lcd.print(Line1);
          for (int strPos = firstListItem +1 ; strPos < secondListItem; strPos++) {
            Line2 = Line2 + stringOne.charAt(strPos);
          }
          //Serial.println(Line2);
          lcd.setCursor(0, 1);
          lcd.print(Line2);
              for (int strPos = secondListItem +1 ; strPos < stringOne.length(); strPos++) {
            Line3 = Line3 + stringOne.charAt(strPos);
          }
          //Serial.println(Line3);
          lcd.setCursor(0, 2);
          lcd.print(Line3);
        }
    }
  }
}


void setup()
{
pinMode(OWTPPin, OUTPUT);
digitalWrite(OWTPPin, OWTState);
  Serial.begin(9600);
  // IC Default 9 bit. If you have troubles consider upping it 12.
  // Up the delay giving the IC more time to process the temperature measurement
  if (TMP_ENABLE)
  {
    sensors.begin();
    int sensorCnt = sensors.getDeviceCount();
    sensors.getAddress(ts1, 0);
  }
  if (LCD_ENABLE)
  {
    // Setup the LCD
    //lcd.begin(16, 2);
    lcd.begin(20, 4);
    lcd.setCursor(0, 3);
    lcd.print(“Temp (F)”);
  }
}

void loop()
{
  if (TMP_ENABLE)
  {
    delay(1000);          //waiting 1 second
    // request to all devices on the bus
    sensors.requestTemperatures(); // Send the command to get temperatures
    float temperature1 = (((sensors.getTempCByIndex(0)) * 1.8 ) + 32);
    int tempSensorValue = int(temperature1);
    if (temperature1 > 0)
    {
      Serial.println(temperature1);
      if (LCD_ENABLE)
      {
        lcd.setCursor(0, 3);
        lcd.print(“Temp (F)”);
        lcd.setCursor(15, 3);
        lcd.print(temperature1);
      }
    }
    else
    {
      Serial.println(temperature1);
    }
    delay(5000);  //waiting 5 seconds
  }
  // See if any data is on the serial port
  lcd.setCursor(0, 1);
  serialReader();
}

You must have the following script with the proper value loaded into it

Python Settings File

Use this script to retrieve data via arduino, then alert if anything is not ordinary

 Python script 

Finally use this shell script write the data to the RRD and make pics