Hi, I am a beginner in the arduino area, I wanted a help in my code and do an aquarium monitoring, I want to put 7 temperature sensors, 7 relays, separately, 5 ph, 5 water sensor, 5 oxygen sensor . the relays and to activate when the temperature drops, low by 28 degrees, and I want to put an LCD (16.2), to monitor the temperature, ph, water oxygen, and also either via bluetooth to see the dandos and can shoot the bombs manually by a cell phone, I started to do some things, but with difficulty in this project, I thank you already any possible help......... 
#include <OneWire.h>
#include <DallasTemperature.h>
// Data wire is plugged into port 6 on the Arduino
#define ONE_WIRE_BUS 10
#define TEMPERATURE_PRECISION 9
// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
// arrays to hold device addresses
DeviceAddress insideThermometer; //outsideThermometer;
int relay =7;
void setup(void)
{
pinMode(relay,OUTPUT);
lcd.begin(16, 2);
// start serial port
Serial.begin(9600);
Serial.println("Dallas Temperature IC Control Library Demo");
// Start up the library
sensors.begin();
// locate devices on the bus
Serial.print("Locating devices...");
Serial.print("Found ");
Serial.print(sensors.getDeviceCount(), DEC);
Serial.println(" devices.");
// report parasite power requirements
Serial.print("Parasite power is: ");
if (sensors.isParasitePowerMode()) Serial.println("ON");
else Serial.println("OFF");
// assign address manually. the addresses below will beed to be changed
// to valid device addresses on your bus. device address can be retrieved
// by using either oneWire.search(deviceAddress) or individually via
// sensors.getAddress(deviceAddress, index)
//insideThermometer = { 0x28, 0x1D, 0x39, 0x31, 0x2, 0x0, 0x0, 0xF0 };
//outsideThermometer = { 0x28, 0x3F, 0x1C, 0x31, 0x2, 0x0, 0x0, 0x2 };
// search for devices on the bus and assign based on an index. ideally,
// you would do this to initially discover addresses on the bus and then
// use those addresses and manually assign them (see above) once you know
// the devices on your bus (and assuming they don't change).
//
// method 1: by index
if (!sensors.getAddress(insideThermometer, 0)) Serial.println("Unable to find address for Device 0");
//if (!sensors.getAddress(outsideThermometer, 1)) Serial.println("Unable to find address for Device 1");
// method 2: search()
// search() looks for the next device. Returns 1 if a new address has been
// returned. A zero might mean that the bus is shorted, there are no devices,
// or you have already retrieved all of them. It might be a good idea to
// check the CRC to make sure you didn't get garbage. The order is
// deterministic. You will always get the same devices in the same order
//
// Must be called before search()
//oneWire.reset_search();
// assigns the first address found to insideThermometer
//if (!oneWire.search(insideThermometer)) Serial.println("Unable to find address for insideThermometer");
// assigns the seconds address found to outsideThermometer
//if (!oneWire.search(outsideThermometer)) Serial.println("Unable to find address for outsideThermometer");
// show the addresses we found on the bus
Serial.print("Device 0 Address: ");
printAddress(insideThermometer);
Serial.println();
// Serial.print("Device 1 Address: ");
// printAddress(outsideThermometer);
// Serial.println();
// set the resolution to 9 bit
sensors.setResolution(insideThermometer, TEMPERATURE_PRECISION);
// sensors.setResolution(outsideThermometer, TEMPERATURE_PRECISION);
Serial.print("Device 0 Resolution: ");
Serial.print(sensors.getResolution(insideThermometer), DEC);
Serial.println();
// Serial.print("Device 1 Resolution: ");
// Serial.print(sensors.getResolution(outsideThermometer), DEC);
// Serial.println();
// set up the LCD's number of columns and rows:
}
// function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
for (uint8_t i = 0; i < 7; i++)
{
// zero pad the address if necessary
if (deviceAddress < 16) Serial.print("0");
_ Serial.print(deviceAddress*, HEX);_
_}_
_}_
_// function to print the temperature for a device*_
void printTemperature(DeviceAddress deviceAddress)
{
float tempC = sensors.getTempC(deviceAddress);
Serial.print("Temp C: ");
Serial.print(tempC);
Serial.print(" Temp F: ");
Serial.print(DallasTemperature::toFahrenheit(tempC));
delay(2000);
}
// function to print a device's resolution
void printResolution(DeviceAddress deviceAddress)
{
Serial.print("Resolution: ");
Serial.print(sensors.getResolution(deviceAddress));
*Serial.println(); *
}
// main function to print information about a device
void printData(DeviceAddress deviceAddress)
{
Serial.print("Device Address: ");
printAddress(deviceAddress);
Serial.print(" ");
printTemperature(deviceAddress);
Serial.println();
}
void loop(void)
{
// call sensors.requestTemperatures() to issue a global temperature
// request to all devices on the bus
//Serial.print("Requesting temperatures...");
sensors.requestTemperatures();
//Serial.println("DONE");
// print the device information
//printData(insideThermometer);
//printData(outsideThermometer);
* Serial.println(sensors.getTempC(insideThermometer));*
//Serial.println(sensors.getTempC(outsideThermometer));
Serial.println(" ");
lcd.setCursor(0, 0);
lcd.print("Temperatura:");
lcd.setCursor(0, 2);
lcd.print("celsius: ");
lcd.print(sensors.getTempC(insideThermometer));
lcd.print(" C");
int setpoint = 29;
int swing = 1;
if ( sensors.getTempC(insideThermometer) >=setpoint + swing) //&& sensors.getTempC(insideThermometer) >sensors.getTempC(outsideThermometer) )
{
digitalWrite(7,HIGH);
* Serial.println("ON ");*
}
else if ( sensors.getTempC(insideThermometer) <setpoint - swing)
{
digitalWrite(7,LOW);
Serial.println("OFF ");
}
delay(500);
}