Measure_actual_voltage_using_Arduino.ino

/* Understanding the use of Serial Monitor & Serial Plotter to measure actual voltage using Arduino */
int potpin = A0;    
float pot_voltage = 0; 
float actualvoltage; 

void setup() 
{
  Serial.begin(9600);
}

void loop() 
{
  pot_voltage = analogRead(potpin);
  actualvoltage = ((pot_voltage)*(4.9/1023.0));

  Serial.print("Pot Voltage: ");
  Serial.print(actualvoltage);
  Serial.println("V");
  delay(1000);
}