int poti;
const int btnBlau = 2;
const int btnGruen = 3;
const int btnRot = 4;
const int blau = 9;
const int gruen = 10;
const int rot = 11;

void setup() {
  // put your setup code here, to run once:
  pinMode(A1, INPUT);

  pinMode(btnBlau, INPUT);
  pinMode(btnGruen, INPUT);
  pinMode(btnRot, INPUT);

  pinMode(rot, OUTPUT);
  pinMode(gruen, OUTPUT);
  pinMode(blau, OUTPUT);

  Serial.begin(9600);
  Serial.println("Begin");
}

void loop() {
  // put your main code here, to run repeatedly:
  poti = map(analogRead(A1), 0, 1023, 0, 255);
  
  if(digitalRead(btnBlau) == HIGH){
    analogWrite(blau, poti);
    Serial.print("Blau: ");
    Serial.println(poti);
  }
  if(digitalRead(btnGruen) == HIGH){
    analogWrite(gruen, poti);
    Serial.print("Grün: ");
    Serial.println(poti);
  }
  if(digitalRead(btnRot) == HIGH){
    analogWrite(rot, poti);
    Serial.print("Rot: ");
    Serial.println(poti);
  }
}