uint32_t TargetHeight = 50;
long rotaryValue = 3;

void setup() {
  Serial.begin(9600);
  Serial.println("Welcome to the Serial Monitor!");
  Serial.println("---------------------------------");

}

void loop() {

//while (Serial.available() == 0) {}

Serial.print("TargetHeight ");
Serial.println(TargetHeight);
TargetHeight = TargetHeight - (rotaryValue * 10);
//TargetHeight = TargetHeight + 10;
Serial.print(TargetHeight);
delay(1000);
if (TargetHeight > 250) {
  TargetHeight = 50;
}
}