//mengenalkan bahan yang digunakan
int led1 = 3;
int led2 = 2;
int led3 = 1;
int pb1 = 4;
//mengenalkan pin yang digunakan
void setup() {
pinMode(3, OUTPUT);
pinMode(2, OUTPUT);
pinMode(1, OUTPUT);
pinMode(4, INPUT);
}
void loop() {
//menekan saklar akan menyalakan led
if(digitalRead(4)==HIGH)
{
digitalWrite(3, HIGH);
delay(100);
digitalWrite(3, LOW);
digitalWrite(2, HIGH);
delay(200);
digitalWrite(2, LOW);
digitalWrite(1, HIGH);
delay(200);
digitalWrite(1, LOW);
digitalWrite(2, HIGH);
delay(200);
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
delay(200);
digitalWrite(3, LOW);
}
//jiga saklar tidak di tekan semua led mati
else (digitalRead(4)==LOW);
{digitalWrite(3, LOW);
digitalWrite(2, LOW);
digitalWrite(1, LOW);
}}