Smart water metering

// Include Libraries
#include "Arduino.h"
#include "DHT.h"
#include "NewPing.h"
#include "LiquidCrystal_PCF8574.h"
#include "Adafruit_NeoPixel.h"
#include "SoilMoisture.h"
#include "Pump.h"

// Pin Definitions
#define DHT_PIN_DATA    2
#define HCSR04_PIN_TRIG 4
#define HCSR04_PIN_ECHO 3
#define LEDRGB_1_PIN_DIN 6
#define SOILMOISTURE_5V_PIN_SIG A3
#define WATERPUMP_PIN_COIL1 5
#define WATERLEVELSENSOR_5V_PIN_SIG A1
#define WATERPRESSURESENSOR_5V_PIN_SIG A0


// Global variables and defines
// There are several different versions of the LCD I2C adapter,each might have a different address.
// Try the given addresses by uncommenting the following rows until LCD works following the serial monitor prints.
// To find your LCD address go to: http://playground.arduino.cc/Main/I2cScanner and run the example.
#define LCD_ADDRESS 0x3F
//#define LCD_ADDRESS 0x27
// Define LCD characteristics
#define LCD_ROWS 2
#define LCD_COLUMNS 16
#define SCROLL_DELAY 150
#define BACKLIGHT 255
#define LedRGB_1_NUMOFLEDS 3
// object initialization
DHT dht(DHT_PIN_DATA);
NewPing hcsr04(HCSR04_PIN_TRIG,HCSR04_PIN_ECHO);
LiquidCrystal_PCF8574 lcdI2C;
Adafruit_NeoPixel LedRGB_1(LEDRGB_1_PIN_DIN);
SoilMoisture soilMoisture_5v(SOILMOISTURE_5V_PIN_SIG);
Pump waterpump(WATERPUMP_PIN_COIL1);

// define vars for testing menu
const int timeout = 10000;       // define timeout of 10 sec
char menuOption = 0;
long time0;

// Setup the essentials for your circuit to work.It runs first every time your circuit is powered with electricity.
void setup()
{
    // Setup Serial which is useful for debugging
    // Use the Serial Monitor to view printed messages
    Serial.begin(9600);
    while (!Serial); // wait for serial port to connect.Needed for native USB
    Serial.println("start");

    dht.begin();
    // initialize the lcd
    lcdI2C.begin(LCD_COLUMNS,LCD_ROWS,LCD_ADDRESS,BACKLIGHT);
    LedRGB_1.begin(); // This initializes the NeoPixel library.
    LedRGB_1.show(); // Initialize all leds to 'off'
    menuOption = menu();
}

(/)/ Main logic of your circuit.It defines the interaction between the components 
you selected.After setup,it runs over and over again,in an eternal loop.
void loop()
{
    if (menuOption == '1') {
        // DHT22/11 Humidity and Temperature Sensor - Test Code
        // Reading humidity in %
        float dhtHumidity = dht.readHumidity();
        // Read temperature in Celsius,for Fahrenheit use .readTempF()
        float dhtTempC = dht.readTempC();
        Serial.print(F("Humidity: "));
        Serial.print(dhtHumidity);
        Serial.print(F(" [%]\t"));
        Serial.print(F("Temp: "));
        Serial.print(dhtTempC);
        Serial.println(F(" [C]"));

    }
    else if (menuOption == '2') {
        // Ultrasonic Sensor - HC-SR04 - Test Code
        // Read distance measurement from UltraSonic sensor           
        int hcsr04Dist = hcsr04.ping_cm();
        delay(10);
        Serial.print(F("Distance: "));
        Serial.print(hcsr04Dist);
        Serial.println(F("[cm]"));

    }
    else if (menuOption == '3') {
        // LCD 16x2 I2C - Test Code
        // The LCD Screen will display the text of your choice.
        lcdI2C.clear();                          // Clear LCD screen.
        lcdI2C.print("  Circuito.io  ");                   // Print print String to LCD on the first line
        lcdI2C.selectLine(2);                    // Set cursor at the beginning of line 2
        lcdI2C.print("     Rocks!  ");                   // Print print String to LCD on the second line
        delay(1000);

    }
    else if (menuOption == '4') {
        // LED - RGB Addressable,PTH,5mm Diffused (5 Pack) #1 - Test Code
        for (int i = 0; i <= LedRGB_1_NUMOFLEDS; i++) {
            for (int k = 0; k <= 255; k++) {
                // set leds Color to RGB values,from 0,0,0 up to 255,255,255
                LedRGB_1.setPixelColor(i,LedRGB_1.Color(255 - k,k,100)); // turn on green color on led #i.
                if (i > 0)
                    LedRGB_1.setPixelColor(i - 1,LedRGB_1.Color(0,0,0)); // turn off the last led
                LedRGB_1.show(); // update led color to the hardware.
                delay(1);
            }
        }

    }
    else if (menuOption == '5') {
        // Soil Moisture Sensor - Test Code
        int soilMoisture_5vVal = soilMoisture_5v.read();
        Serial.print(F("Val: "));
        Serial.println(soilMoisture_5vVal);

    }
    else if (menuOption == '6') {
        // Submersible Pool Water Pump - Test Code
        // The water pump will turn on and off for 2000ms (4 sec)
        waterpump.on(); // 1.turns on
        delay(2000);       // 2.waits 500 milliseconds (0.5 sec).
        waterpump.off(); // 3.turns off
        delay(2000);       // 4.waits 500 milliseconds (0.5 sec).
    }
    else if (menuOption == '7') {
        // Disclaimer: The Water Level Sensor Module is in testing and/or doesn't have code,therefore it may be buggy.Please be kind and report any bugs you may find.
    }
    else if (menuOption == '8') {
        // Disclaimer: The Gravity: Analog Water Pressure Sensor is in testing and/or doesn't have code,therefore it may be buggy.Please be kind and report any bugs you may find.
    }

    if (millis() - time0 > timeout) {
        menuOption = menu();
    }
}

// Menu function for selecting the components to be tested
// Follow the serial monitor for instructions
char menu()
{
    Serial.println(F("\nWhich component would you like to test?"));
    Serial.println(F("(1) DHT22/11 Humidity and Temperature Sensor"));
    Serial.println(F("(2) Ultrasonic Sensor - HC-SR04"));
    Serial.println(F("(3) LCD 16x2 I2C"));
    Serial.println(F("(4) LED - RGB Addressable,PTH,5mm Diffused (5 Pack) #1"));
    Serial.println(F("(5) Soil Moisture Sensor"));
    Serial.println(F("(6) Submersible Pool Water Pump"));
    Serial.println(F("(7) Water Level Sensor Module"));
    Serial.println(F("(8) Gravity: Analog Water Pressure Sensor"));
    Serial.println(F("(menu) send anything else or press the onboard reset button\n"));

    while (!Serial.available());

    // Read data from the serial monitor if received
    while (Serial.available())
    {
        char c = Serial.read();
        if (isAlphaNumeric(c))
        {
            if (c == '1')
                Serial.println(F("Now Testing DHT22/11 Humidity and Temperature Sensor"));
            else if (c == '2')
                Serial.println(F("Now Testing Ultrasonic Sensor - HC-SR04"));
            else if (c == '3')
                Serial.println(F("Now Testing LCD 16x2 I2C"));
            else if (c == '4')
                Serial.println(F("Now Testing LED - RGB Addressable,PTH,5mm Diffused (5 Pack) #1"));
            else if (c == '5')
                Serial.println(F("Now Testing Soil Moisture Sensor"));
            else if (c == '6')
                Serial.println(F("Now Testing Submersible Pool Water Pump"));
            else if (c == '7')
                Serial.println(F("Now Testing Water Level Sensor Module - note that this component doesn't have a test code"));
            else if (c == '8')
                Serial.println(F("Now Testing Gravity: Analog Water Pressure Sensor - note that this component doesn't have a test code"));
            else
            {
                Serial.println(F("illegal input!"));
                return 0;
            }
            time0 = millis();
            return c;
        }
    }
}