void setup() {
pinMode(15, OUTPUT);
pinMode(2,  OUTPUT);
pinMode(4,  OUTPUT);
pinMode(5, INPUT);
}

void loop() 
{
  int Poti = 5;
  int LedR = 15;
  int LedGe = 2;
  int LedGr = 4;
  int Stufe;
  int value = analogRead(5);
  Serial.begin(115200);

  Serial.print(analogRead(5));
  delay(100);

if (value < 2000)
{
  digitalWrite(LedR, HIGH);

}
else {
  digitalWrite(LedR, LOW);
}


}