#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Initialize the LCD
LiquidCrystal_I2C lcd(0x27, 20, 4);

// Pin definitions
const int pot1Pin = 35;    // Pin for potentiometer 1 Tur
const int pot2Pin = 33;    // Pin for potentiometer 2 Ph
const int tempPin = 32;    // Pin for temperature sensor

void setup() {
  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  
  // Initialize serial communication
  Serial.begin(115200);
  
  // Print welcome message
  lcd.setCursor(0, 0);
  lcd.print("Water Quality");
  lcd.setCursor(0, 1);
  lcd.print("Monitoring System");
  delay(2000);
  
  // Clear the LCD
  lcd.clear();
}

void loop() {
  // Read values from sensors
  int pot1Value = analogRead(pot1Pin);
  int pot2Value = analogRead(pot2Pin);
  int tempValue = analogRead(tempPin);

  // Map potentiometer values to a range (e.g., 0-100)
  int pot1Percent = map(pot1Value, 0, 4095, 0, 100);
  int pot2Percent = map(pot2Value, 0, 4095, 0, 100);
  
  // Convert temperature sensor value to Celsius (assuming a specific sensor)
  float voltage = tempValue * (3.3 / 4095.0);
  float temperature = (voltage - 0.5) * 100.0; // Example conversion for TMP36 sensor

  // Print values to the LCD
  lcd.setCursor(0, 0);
  lcd.print("Turbi:");
  lcd.setCursor(6, 0);
  lcd.print(pot1Percent);
  lcd.print("%");

  lcd.setCursor(0, 1);
  lcd.print("PH   :");
  lcd.setCursor(6, 1);
  lcd.print(pot2Percent);
  lcd.print("%");

  lcd.setCursor(0, 2);
  lcd.print("Temp :");
  lcd.setCursor(6, 2);
  lcd.print(temperature);
  lcd.print("C");

  // Print values to the Serial Monitor
  Serial.print("Turbidity value: ");
  Serial.print(pot1Percent);
  Serial.print("%, ");
  Serial.print("PH value: ");
  Serial.print(pot2Percent);
  Serial.print("%, ");
  Serial.print("Temperature value: ");
  Serial.print(temperature);
  Serial.println("C");

  // Delay before next reading
  delay(1000);
}