#include <LiquidCrystal.h>
const int voltagePin = A0;  // Analog pin for voltage measurement
const int currentPin = A1;  // Analog pin for current measurement
const int resistorPin = A2;
// Initialize the LCD library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  // Set up the number of columns and rows on the LCD
  Serial.begin(9600);
  lcd.begin(15, 2);

  
}

void loop() {
  float voltage = analogRead(voltagePin) * (5.0 / 1023.0); // Convert ADC value to voltage
  float current = analogRead(currentPin) * (5.0 / 1023.0); // Convert ADC value to current
  float resistor = analogRead(resistorPin) * (5.0 / 1023.0); 
   // Power factor calculation
  float powerFactor =((current * current )* resistor) / (voltage * current);
  // Display power factor on LCD
  lcd.clear();
   lcd.print("Power Factor:");
  
  Serial.print("Power Factor: ");
  Serial.println(powerFactor);
  Serial.print("Voltage: ");
  Serial.print(voltage);
  Serial.print(" V, Current: ");
  Serial.print(current);

 if (powerFactor >= 0.0 && powerFactor <= 0.3) {
    lcd.setCursor(0, 3);
    lcd.print("Bad PF: Improve");
  }
  else if (powerFactor > 0.3 && powerFactor <= 0.7) {
    lcd.setCursor(0, 3);
    lcd.print("Good PF: Optimize");
  }
  else if (powerFactor > 0.7 && powerFactor <= 1.0) {
    lcd.setCursor(0, 3);
    lcd.print("Excellent PF!");
  }
  else if (powerFactor >1){
    lcd.print("overload");
    lcd.setCursor(0, 3);
  }
  delay(2000); // Delay for stability
}