[아두이노] 초음센서로 삼색 LED 제어하기

#define TRIG 2

#define ECHO 3

#define RED 11

#define GREEN 10

#define BLUE 9

void setup(){

  pinMode(TRIG, OUTPUT);

  pinMode(ECHO, INPUT);

}

void loop(){

  digitalWrite(TRIG, LOW);

  delayMicroseconds(2);

  digitalWrite(TRIG, HIGH);

  delayMicroseconds(10);

  digitalWrite(TRIG, LOW);

  

  long distance = pulseIn(ECHO, HIGH)/58.2;

  analogWrite(RED, 0);

  analogWrite(GREEN, 0);

  analogWrite(BLUE, 0);

  

  if(distance < 10){

    analogWrite(RED, 255);

  }else if(distance < 20){

    analogWrite(GREEN, 255);

  }else if(distance < 30){

    analogWrite(BLUE, 255);

  }

  delay(100);

}

날짜 : 2016년 11월 10일