water_level_detector.ino

//Automatic Water Level control system by Easy HomeMade Projects.
//Arduino code written by Engr. Usman Ahmad.
//Use arduino UNO or Arduino NANO.
//
#include <LiquidCrystal.h>
int level1 = A1;
int level2 = A2;
int level3 = A3;
int level4 = A4;
int level5 = A5;
int motor = 6;
int a;
int b;
int c;
int d;
int e;
int r;  //Water Pump status flag
int m = 0;  //water Pump flag
int z = 111;  // Adjust this value from 100 to 1023 if your circuit do not show correct value. 

void setup()
{
  pinMode(level1, INPUT);
  pinMode(level2, INPUT);
  pinMode(level3, INPUT);
  pinMode(level4, INPUT);
  pinMode(level5, INPUT);
  pinMode(motor, OUTPUT);
  //lcd.begin(20, 4); // if you are using 16x2 line LCD, then replace these values and also adjust all LCD text for 1st and 2nd line in the loop below. 
}

void loop()
{

  r = digitalRead(motor);
  a = analogRead(level1);
  b = analogRead(level2);
  c = analogRead(level3);
  d = analogRead(level4);
  e = analogRead(level5);
  //lcd.clear();
  //lcd.setCursor(2,0);              
  //lcd.print("Easy HM Projects");   
  //lcd.setCursor(0,1);              
  //lcd.print("Water Level Monitor.");

  if (e > z && d > z && c > z && b > z && a > z)
  {
    {
      digitalWrite(motor, LOW);
    }
    //lcd.setCursor(1,2);
    //lcd.print("Tank is 100% FULL");
  }
  else
  {
    if (e < z && d > z && c > z && b > z && a > z)
    {
      //lcd.setCursor(1,2);
      //lcd.print("Tank is 80% FULL");
    }
    else
    {
      if (e < z && d < z && c > z && b > z && a > z)
      {
        //lcd.setCursor(1,2);
        //lcd.print("Tank is 60% FULL");
      }
      else
      {
        if (e < z && d < z && c < z && b > z && a > z)
        {

          //lcd.setCursor(1,2);
          //lcd.print("Tank is 40% FULL");
        }
        else
        if (e < z && d < z && c < z && b < z && a > z)
        {

          //lcd.setCursor(1,2);
          //lcd.print("Tank is 20% FULL");
        }
        else
        {
          if (e < z && d < z && c < z && b < z && a < z)
          {       {         digitalWrite(motor, HIGH);
            }

            //lcd.setCursor(3,2);
            //lcd.print("Tank is EMPTY");
          }
        }
      }
    }
  }
  if (r == LOW)
  {
    //lcd.setCursor(0,3);
    //lcd.print("Water Pump is (OFF)");
  }
  else
  {
    //lcd.setCursor(0,3);
    //lcd.print("Water Pump is (ON)");
  }
  {
    delay(100);
    //lcd.clear();
  }
}