#define echo 9
#define trig 8
#define analogldr A0

long duration;
int distance;


void setup() {
  // put your setup code here, to run once:
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(analogldr, INPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);

  Serial.begin(115200);

  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);

}

void loop() {
  int membaca_analog = analogRead(analogldr);
  Serial.print("Hasil baca: ");
  Serial.println(membaca_analog);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);

   float jarak_baca = pulseIn(echo, HIGH)/58.0;
  int kondisi_cahaya = analogRead(analogldr);
  
  if (jarak_baca <= 200){
   if (kondisi_cahaya > 900){
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
   }
   else if (kondisi_cahaya <= 900 && kondisi_cahaya >= 400){
    digitalWrite(2, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(3, LOW);
    digitalWrite(5, LOW);
    digitalWrite(7, LOW);
   }
   else{
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
    digitalWrite(6, LOW);
    digitalWrite(7, LOW);
   }
  }

  
 
  delay(1000);
}