WATER_LEVEL_INDI_USING_ARDUINO.ino

#include <LiquidCrystal.h>
LiquidCrystal lcd(13, 12, 11, 10, 9, 8);
byte sensorPin[] = {0,1,2,3,4,5,6,7};
byte ledPin[] = {17,16,15,14}; // number of leds = numbers of sensors
const byte sensors = 8;
const byte leds=4;
int motor = A4;
int buzzer = A5;
 
void setup()
  {
    for(int i = 0; i< sensors; i++) //initialize all sensor pins to input pin
    {
       pinMode(sensorPin[i], INPUT); 
    }
        for(int i = 0; i< leds; i++) //initialize all led pins to output pins 
    {
       pinMode(ledPin[i], OUTPUT);
    }
    pinMode(motor, OUTPUT);        //initialize motor pin to output pin 
    lcd.begin(20, 4);            //initializing 20x4 LCD
    lcd.clear();                //clear LCD first 
    lcd.print("ELECTRONIFY.ORG");  // display string electronify.org 
  }
 
void loop() 
{
  int level = 0; 
  for(int i = 0; i < sensors; i++)
  {
     if(digitalRead(sensorPin[i]) == HIGH)
     {
        digitalWrite(ledPin[i/2], HIGH);
      level = i+1;
     } else 
     {
       digitalWrite(ledPin[i/2], LOW);       
     }    
  }
  lcd.setCursor(0,1); 
  lcd.print("WATER LEVEL MEASURE");
  lcd.setCursor(0,2);  
  switch(level) {
     case 1:
      lcd.print("LEVEL 1");
      digitalWrite(motor, HIGH);
      break;
     case 2:
       lcd.print("LEVEL 2");
       digitalWrite(motor, HIGH);
       break;
     case 3:
       lcd.print("LEVEL 3 ");
       digitalWrite(motor, HIGH);
       break;
      case 4:
       lcd.print("LEVEL 4 ");
       digitalWrite(motor, LOW);
       break;
      case 5:
       lcd.print("LEVEL 5 ");
       digitalWrite(motor, LOW);
       break;
     case 6:
       lcd.print("LEVEL 6 ");
       digitalWrite(motor, LOW);
       break;
      case 7:
       lcd.print("LEVEL 7 ");
       digitalWrite(motor, LOW);
       break;
      case 8:
       lcd.print("LEVEL 8 ");
       digitalWrite(motor, LOW);
       lcd.setCursor(0,3); 
       lcd.print("WARNING : OVERFLOW");
       for(int j = 0; j< 255; j++)
        {
            analogWrite(buzzer, j);
            delay(10);
        }
       break;
     default:
      lcd.print("NO WATER"); 
      digitalWrite(motor, HIGH);   
      break;
  }
  delay(50);  
 }