int potPin = A0;
float voltage = 0.0; 

void setup() {
  Serial.begin(115200);
}

void loop() {
  int sensorValue = analogRead(potPin); 
  voltage = sensorValue * (5.0 / 1023.0); 

  Serial.print("Наяпряжение: ");
  Serial.print(voltage);
  Serial.println(" В");

  delay(500);
}