// Menentukan pin LED
const int led1 = 2;
const int led2 = 3;
const int led3 = 4;
const int led4 = 5;
const int led5 = 6;
const int led6 = 7;
const int led7 = 8;
const int led8 = 9;
const int led9 = 10;
const int led10 = 11;
const int led11 = 12;
const int led12 = 13;
const int led =1;
const int buttonPin = A0;
void setup() {
// Mengatur pin LED sebagai OUTPUT
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
pinMode(led8, OUTPUT);
pinMode(led9, OUTPUT);
pinMode(led10, OUTPUT);
pinMode(led11, OUTPUT);
pinMode(led12, OUTPUT);
pinMode(buttonPin, INPUT_PULLUP);
pinMode(led, OUTPUT);
}
void loop() {
// Membaca status tombol tekan
int buttonState = digitalRead(buttonPin);
// Jika tombol ditekan (pin membaca LOW), LED dan lampu lalu lintas menyala
if (buttonState == LOW) {
digitalWrite(led, HIGH);
// lampu merah
digitalWrite(led1, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led10, HIGH);
//lampu pertama a
delay(5000);
digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
delay(2000);
digitalWrite(led2, LOW);
digitalWrite(led3, HIGH);
delay(5000);
digitalWrite(led3, LOW);
digitalWrite(led1, HIGH);
//lampu b
digitalWrite(led4, LOW);
digitalWrite(led5, HIGH);
delay(2000);
digitalWrite(led5, LOW);
digitalWrite(led6, HIGH);
delay(5000);
digitalWrite(led6, LOW);
digitalWrite(led4, HIGH);
//lampu c
digitalWrite(led7, LOW);
digitalWrite(led8, HIGH);
delay(2000);
digitalWrite(led8, LOW);
digitalWrite(led9, HIGH);
delay(5000);
digitalWrite(led9, LOW);
digitalWrite(led7, HIGH);
//lampu d
digitalWrite(led10, LOW);
digitalWrite(led11, HIGH);
delay(2000);
digitalWrite(led11, LOW);
digitalWrite(led12, HIGH);
delay(5000);
digitalWrite(led12, LOW);
digitalWrite(led1, HIGH);
}
// Jika tombol tidak ditekan (pin membaca HIGH), LED dan lampu lalu lintas mati
else {
digitalWrite(led, LOW);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
digitalWrite(led10, LOW);
digitalWrite(led11, LOW);
digitalWrite(led12, LOW);
}
}