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

#define VOLTAGE_SENSOR_PIN 39   // Analog pin for the voltage sensor
LiquidCrystal_I2C lcd(0x27, 16, 2);

#define ACS712_PIN 34          // Analog pin for the ACS712 sensor

void setup() 
{
  // Initialize serial communication and LCD
  Serial.begin(9600);
  pinMode(VOLTAGE_SENSOR_PIN, INPUT);
  pinMode(ACS712_PIN, INPUT);
  lcd.init();
  lcd.backlight();
}

void loop() 
{
  // Read the battery voltage from the sensor
  int sensorValueVoltage = analogRead(VOLTAGE_SENSOR_PIN);
  float voltageBattery = (sensorValueVoltage / 1023.0) * 5.0;

  // Calculate current using the ACS712 sensor
  int sensorValueACS = analogRead(ACS712_PIN);
  float voltageCurrent = sensorValueACS * (5.0 / 1023.0);
  float current = voltageCurrent / 0.1;  // 100mV per A sensitivity of ACS712

  // Calculate power (Power = Voltage * Current)
  float power = voltageBattery * current;

  // Display voltage on LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Batt_Vtg: ");
  lcd.print(voltageBattery, 2);
  lcd.print(" V");

  // Display current on LCD
  lcd.setCursor(0, 1);
  lcd.print("Current: ");
  lcd.print(current, 2);
  lcd.print(" A");

  // Display power on LCD
  lcd.setCursor(0, 2);  // Assuming we have enough space for this line
  lcd.print("Power: ");
  lcd.print(power, 2);
  lcd.print(" W");

  // Display values in Serial Monitor
  Serial.print("Batt_Voltage: ");
  Serial.print(voltageBattery, 2);
  Serial.println(" V");

  Serial.print("Current: ");
  Serial.print(current, 2);
  Serial.println(" A");

  Serial.print("Power: ");
  Serial.print(power, 2);
  Serial.println(" W");

  delay(1000);
}