#define gedrueckt 0
#define nichtgedrueckt 1
#define LED 12
#define TASTER 11
bool ledist=0;
bool tasterwar=0;
bool taster;
void setup() {
  // put your setup code here, to run once:
pinMode(LED,OUTPUT);
pinMode(TASTER, INPUT_PULLUP);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:


taster=!digitalRead(TASTER);

Serial.print(taster);
Serial.print("    ");
Serial.println(tasterwar);

if ((taster != tasterwar)&&(taster==1)){
ledist=!ledist;
digitalWrite(LED,ledist);

}
tasterwar=taster;
delay(50);

}