const int ohim = 12;
const int andrianputra = 11;

void setup() {
pinMode(ohim, OUTPUT);
pinMode(andrianputra, OUTPUT);
}
void loop(){
digitalWrite(ohim, 1);
delay(250);
digitalWrite (ohim, 0);
delay(250);
digitalWrite(andrianputra, 1);
delay(250);
digitalWrite(andrianputra, 0);
delay(250);
}