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

#define SOLAR_PIN 34
#define BATTERY_PIN 35
#define WATT_PIN 32

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();
}

void loop() {
  // Read ADC values and convert to voltage/wattage
  float solarVoltage = (analogRead(SOLAR_PIN) / 4095.0) * 3.3 * 6.0;
  float batteryVoltage = (analogRead(BATTERY_PIN) / 4095.0) * 3.3 * 6.0;
  float wattage = (analogRead(WATT_PIN) / 4095.0) * 3.3 * 60.0;

  // Prepare formatted strings
  String solarStr = solarVoltage >= 10.0 ? String(solarVoltage, 1) + "V " : " " + String(solarVoltage, 1) + "V ";
  String batteryStr = batteryVoltage >= 10.0 ? String(batteryVoltage, 1) + "V " : " " + String(batteryVoltage, 1) + "V ";
  String wattStr = wattage >= 100 ? String((int)wattage) + "W" : " " + String((int)wattage) + "W";

  // Print formatted strings to the LCD
  lcd.setCursor(0, 0);
  lcd.print(solarStr);

  lcd.setCursor(0, 1);
  lcd.print(batteryStr);

  lcd.setCursor(12, 1);
  lcd.print(wattStr);

  delay(350);
}