Koding pptx

 #define trigPin 7

#define echoPin 6

#define ledAman 8

#define led1 9

#define led2 10

#define led3 11

#define buzzer 12  

void setup() {

  Serial.begin(9600);

  pinMode(trigPin, OUTPUT);

  pinMode(echoPin, INPUT);

  pinMode(ledAman, OUTPUT);

  pinMode(led1, OUTPUT);

  pinMode(led2, OUTPUT);

  pinMode(led3, OUTPUT);

  pinMode(buzzer, OUTPUT);  

}

void loop() {

  long duration, distance;

  digitalWrite(trigPin, LOW);

  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);

  delayMicroseconds(10);

  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);

  distance = (duration / 2) / 29.1;

  Serial.print("DURASI: ");

  Serial.print(duration);

  Serial.print(" , JARAK: ");

  Serial.println(distance);

   digitalWrite(ledAman,LOW );

    digitalWrite(led1, LOW);

    digitalWrite(led2, LOW);

    digitalWrite(led3, LOW);

    digitalWrite(buzzer, LOW);  

  

  if (distance >= 16) {

    digitalWrite(ledAman, HIGH);

    digitalWrite(led1, LOW);

    digitalWrite(led2, LOW);

    digitalWrite(led3, LOW);

    digitalWrite(buzzer, LOW);  

  } else {

    digitalWrite(ledAman, LOW);

  }

  if (distance <= 15 && distance >= 10) {

    digitalWrite(led1, HIGH);

    digitalWrite(led2, LOW);

    digitalWrite(led3, LOW);

    digitalWrite(buzzer, LOW);

  }

  if (distance < 10 && distance >= 5) {

    digitalWrite(led2, HIGH);

    digitalWrite(led1, LOW);

    digitalWrite(led3, LOW);

    digitalWrite(buzzer, LOW);  

  }

  if (distance < 5) {

    digitalWrite(led1, LOW);

    digitalWrite(led2, LOW);

    digitalWrite(led3, HIGH);

    digitalWrite(buzzer, HIGH); 

    delay(200);

    digitalWrite(led3, LOW);

    digitalWrite(buzzer, LOW);  

    delay(200);

  } else {

    digitalWrite(led3, LOW);

    digitalWrite(buzzer, HIGH);  

  }

  delay(100);

}