//bel sederhana menggunakan arduino 

void setup() {
  pinMode(8, INPUT);
  pinMode(5, OUTPUT);
}

void loop() {
int Switch_State=digitalRead(8);
if(Switch_State==HIGH){
  digitalWrite(5, HIGH);
  tone(5, 1000);

}
else{
  digitalWrite(5, LOW);
  noTone(5);

}
}