Das Relais schaltet externe Stromkreise bis 240V.
int LEDPin =5;
int buttonPin =7;
boolean zaehlerCheck = false;
void setup() {
pinMode (buttonPin, INPUT);
pinMode (LEDPin, OUTPUT);
Serial.begin(9600);
digitalWrite(LEDPin, HIGH);
}
void loop(){
if (digitalRead(buttonPin) == HIGH) {
digitalWrite(LEDPin, LOW);
}else digitalWrite(LEDPin, HIGH);
}
