//Program sensor lampu oleh Rikkusu-kun
//Ini adalah program untuk ujian praktek semester ganjil kelas 12

int m = 8;
int k = 9;
int h = 10;

int echo = 13;
int trig = 12;
long durasi, jarak;

int buzz = 11;
const int kedeketan = 700;
const int jauh = 350;
const int kejauhan = 0;

void setup() {
  Serial.begin(9600);
  Serial.println ("Mendeteksi jarak...");
  pinMode(m, OUTPUT);
  pinMode(k, OUTPUT);
  pinMode(h, OUTPUT);
  pinMode(13, INPUT);
  pinMode(12, OUTPUT);
  pinMode(buzz, OUTPUT);
}

void loop() {
  digitalWrite (trig, HIGH);
  delayMicroseconds (5);
  digitalWrite (trig, LOW);
  delayMicroseconds (5);
  durasi = pulseIn(echo, HIGH);
  jarak = durasi/58.2;
  Serial.println(jarak);

  if(jarak < 100){
    digitalWrite (m, HIGH);
    digitalWrite (k, LOW);
    digitalWrite (h, LOW);
    tone(buzz, kedeketan);
  }

  else if(jarak > 100 && jarak < 200){
    digitalWrite (m, LOW);
    digitalWrite (k, HIGH);
    digitalWrite (h, LOW);
    tone(buzz, jauh);
    delay(100);
    noTone(buzz);
    delay(100);
  }

  else{
    digitalWrite (m, LOW);
    digitalWrite (k, LOW);
    digitalWrite (h, HIGH);
    tone(buzz, kejauhan);
    delay(200);
    noTone(buzz);
    delay(200);
  }
}