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

void loop() {
  int value = analogRead(A0);
  int mappedValue = map(value, 300, 900, 0, 180);
  int constrainedValue = constrain(mappedValue, 0, 180);

  Serial.print("Value: ");
  Serial.println(value);
  Serial.print("Mapped value: ");
  Serial.println(mappedValue);
  Serial.print("Constrained value: ");
  Serial.println(constrainedValue);
  Serial.println();

  delay(1000);
}