Arduino Ders 8 (HC-SR04 Sensörü ile Mesafe Algılama)

const int trigger_pin = 13;
const int echo_pin = 12;
const int buzzer = 2;
const int kled = 6;
const int mled = 5;
const int yled = 4;


int sure ;
int mesafe;




**** setup() {


pinMode(kled , OUTPUT);
pinMode(mled , OUTPUT);
pinMode(yled , OUTPUT);
pinMode(buzzer , OUTPUT);
pinMode(trigger_pin , OUTPUT);
pinMode(echo_pin , INPUT);


Serial.begin(9600);




}


**** loop() {
digitalWrite(trigger_pin , HIGH);
delayMicroseconds(1000);
digitalWrite(trigger_pin , LOW);
sure = pulseIn(echo_pin ,HIGH);
mesafe = (sure/2) / 29.1;
Serial.println(mesafe);





if ( mesafe <= 10 )
{
digitalWrite(kled , HIGH);
digitalWrite(buzzer , HIGH);
delay(50);
digitalWrite(kled , LOW);
digitalWrite(buzzer , LOW);
delay(250);


}

else if ( mesafe <= 25 )
{
digitalWrite(mled , HIGH);
digitalWrite(buzzer , HIGH);
delay(50);
digitalWrite(mled , LOW);
digitalWrite(buzzer , LOW);
delay(500);


}
else if ( mesafe <= 50 )
{
digitalWrite(yled , HIGH);
digitalWrite(buzzer , HIGH);
delay(50);
digitalWrite(yled , LOW);
digitalWrite(buzzer , LOW);
delay(750);


}
}