const int potPin = 36;

// Potentiometer value
int potValue = 0;
float result = 0;

void setup() {
  Serial.begin(115200);
  delay(1000);
  pinMode(potPin,INPUT_PULLUP);
}

void loop() {
  // Measures the value of the potentiometer
  potValue = analogRead(potPin);
  result = (float)potValue / 4095 * 5;

  String str = " бар";
  Serial.println(result + str);
  delay(250);
}