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#define echoPin 12
#define led 11
#define led2 10
void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(led, OUTPUT);
pinMode(led2, OUTPUT);
}
void loop() {
long duration, distance;
digitalWrite(trigPin, LOW); // HC-SR04 ün TRİG bacağını sıfırladık
delayMicroseconds(2); // biraz bekledik
digitalWrite(trigPin, HIGH);
delayMicroseconds(10); // Added this line
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
if (distance < 4) { // if sorgusuyla uzaklığı kontrol ediyoruz.
digitalWrite(led,HIGH); // Eğer bir cisim 4 cm daha fazla yaklaşmışsa led2yi kapatıp diğer ledi yakıyoruz.
digitalWrite(led2,LOW);
}
else {
digitalWrite(led,LOW);
digitalWrite(led2,HIGH);
}
if (distance >= 200 || distance <= 0){
Serial.println("Hiç bir cisim algılanamadı.");
}
else {
Serial.print(distance);
Serial.println(" cm");
}
delay(500);
}
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