int baca; //buat variable baca sensor
void setup() {
pinMode(12, OUTPUT); //Set Pin D4 sbg Output buzzer
pinMode(13, INPUT_PULLUP); //Set Pin D1 sbg Input LDR
}
void loop() {
baca=digitalRead(13);//baca pin-D1 simpan di var baca
if (baca==0){ //jika var baca logic 0 artinya terang
buzzer(); //hidupkan buzzer
} //jika tidak logic 0 artinya gelap
else{ //selain itu
digitalWrite(12, HIGH); //matikan buzzer
}
}
void buzzer(){
digitalWrite(12,LOW);delay(1);//100us-1ms
digitalWrite(12,HIGH);delay(1);
}