¡Construyendo un voltímetro y un amperímetro en Arduino!

#include <LiquidCrystal.h> // Library used for the LCD display

LiquidCrystal lcd(12, 11, 4, 5, 6, 7); // Initialize the LCD with the pins used
// Initialize voltage and current values
float input_voltage = 0.0;
float measured_voltage = 0.0;
float measured_current = 0.0;
// The two resistors used for voltage and current measurement
float resistor_A = 15000.0;
float resistor_B = 1500.0;
         
void setup(){
  lcd.begin(16, 2); // Initialize the LCD
  lcd.clear();
}

void loop () {
  // Position on first line for voltage
  lcd.setCursor(0,0); 
  lcd.print("Voltage:");
  lcd.setCursor(8, 0);
  lcd.print(measured_voltage); // Display voltage
  lcd.setCursor(14, 0);
  lcd.print("V");
   // Position on second line for current
  lcd.setCursor(0,1);
  lcd.print("Current: ");
  lcd.setCursor(8, 1);
  lcd.print(measured_current); // Display current
  lcd.setCursor(14, 1);
  lcd.print("mA");
  
  input_voltage = (analogRead(A0)*5.0)/1023.0; // Read input voltage
  measured_voltage = input_voltage/(resistor_B/(resistor_A + resistor_B)); // Adjust voltage based on resistor values
  measured_current = 1000*(measured_voltage/(resistor_A+resistor_B)); // Calculate current based on resistor values
}