[아두이노] 초음파 센서로 LED 제어하기

 

#define TRIG_PIN 2
#define ECHO_PIN 3
#define LED_PIN 4

void setup() {
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
}
void loop()
{
  int distance = 0;
 
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  distance = pulseIn(ECHO_PIN, HIGH)/58.2;
 
  if (distance <= 10) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }
}

 

 

날짜 : 22016년 09월 29일