#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int Time = 1;         // Set time in minutes default time is 1min
int threshold = 20;   // set threshold in percentage 80, 70, 60, 50, 40, 30, 20 only. default 20,
int i;
int x;
int y;
int z;
int start;
int calibrateValue;
const int calibrateBTN = A1 ;
const int input = A0;
const int motor = 7;
boolean calibration = false;
boolean rescue = false;
void setup()
{
Serial.begin(9600);
pinMode(input, INPUT);
pinMode(calibrateBTN, INPUT);
pinMode(motor, OUTPUT);
digitalWrite(calibrateBTN, HIGH);
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("Solar Powered");
lcd.setCursor(0,1);
lcd.print("Irrigation System");
delay(2000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Subscribe My Chan-");
lcd.setCursor(0,1);
lcd.print("-nel AviPrink");
delay(2000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Pour water and");
lcd.setCursor(0,1);
lcd.print("press calibrate");
while(!calibration)
{
if(digitalRead(calibrateBTN)==LOW)
{
calibrateValue = analogRead(input);
x = 1023 - calibrateValue;
x = x/10;
Serial.print("Difference = ");
Serial.println(x);
Serial.print("Calibration Value = ");
Serial.println(calibrateValue);
delay(500);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Calibration done");
lcd.setCursor(0,1);
lcd.print("successfully !!!");
calibration = true;
delay(2000);
}
}
}
void loop()
{
if(analogRead(input)<= calibrateValue)
{
delay(500);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 100%");
}
if(analogRead(input) > calibrateValue && analogRead(input) <= calibrateValue+x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 90 to 99%");
}
if(analogRead(input) > calibrateValue+x && analogRead(input) <= calibrateValue+2*x )
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 80 to 90%");
start = 80;
}
if(analogRead(input) > calibrateValue+2*x && analogRead(input) <= calibrateValue+3*x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 70 to 80%");
start = 70;
}
if(analogRead(input) > calibrateValue+3*x && analogRead(input) <= calibrateValue+4*x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 60 to 70%");
start = 60;
}
if(analogRead(input) > calibrateValue+4*x && analogRead(input) <= calibrateValue+5*x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 50 to 60%");
start = 50;
}
if(analogRead(input) > calibrateValue+5*x && analogRead(input) <= calibrateValue+6*x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 40 to 50%");
start = 40;
}
if(analogRead(input) > calibrateValue+6*x && analogRead(input) <= calibrateValue+7*x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 30 to 40%");
start = 30;
}
if(analogRead(input) > calibrateValue+7*x && analogRead(input) <= calibrateValue+8*x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 20 to 30%");
start = 20;
}
if(analogRead(input) > calibrateValue+8*x && analogRead(input) <= calibrateValue+9*x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: 10 to 20%");
start = 10;
}
if(analogRead(input) > calibrateValue+9*x && analogRead(input) <= calibrateValue+10*x)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Soil Moisture");
lcd.setCursor(0,1);
lcd.print("Level: < 10%");
rescue = true;
}
if(start == threshold || rescue)
{
y = Time;
digitalWrite(motor, HIGH);
Time = Time*60;
z = Time;
for(i=0; i<Time; i++)
{
z = z - 1;
delay(1000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("PUMP IS ON, WILL");
lcd.setCursor(0,1);
lcd.print("TURN OFF IN:");
lcd.print(z);
}
Time = y;
rescue = false;
digitalWrite(motor, LOW);
}
delay(1000);
}