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

LiquidCrystal_I2C lcd(0x27, 16, 2);

int voltPin = A0;
int currPin = A1;
float voltage, current, power;

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
}

void loop() {
  int vRaw = analogRead(voltPin);
  int cRaw = analogRead(currPin);

  voltage = (vRaw / 1023.0) * 250;   // simulate 0-250V
  current = (cRaw / 1023.0) * 30;    // simulate 0-30A
  power = voltage * current;

  Serial.print("Voltage: "); Serial.print(voltage); Serial.print(" V ");
  Serial.print("Current: "); Serial.print(current); Serial.print(" A ");
  Serial.print("Power: "); Serial.print(power); Serial.println(" W");

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("V:"); lcd.print(voltage, 1); lcd.print(" C:"); lcd.print(current, 1);
  lcd.setCursor(0, 1);
  lcd.print("P:"); lcd.print(power, 1); lcd.print(" W");

  delay(1000);
}