아두이노 여러개 LED 제어

준비물

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Arduino Uno R3, 빨간색 LED, 초록색 LED, 220Ω 레지스터

 

회로도

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소스코드

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void setup()
{
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
}
 
void loop()
{
    digitalWrite(13, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(13, LOW);
  delay(500); // Wait for 1000 millisecond(s)
  
  digitalWrite(12, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(12, LOW);
  delay(500); // Wait for 1000 millisecond(s)
 
  digitalWrite(11, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(11, LOW);
  delay(500); // Wait for 1000 millisecond(s)
  
  digitalWrite(10, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(10, LOW);
  delay(500); // Wait for 1000 millisecond(s)
  
  digitalWrite(9, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(9, LOW);
  delay(500); // Wait for 1000 millisecond(s)
 
}

13,11,9와 12,10을 나누어 LED 제어하고 싶어 아래와 같이 수정

void setup()
{
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
}
 
void loop()
{
    digitalWrite(13, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(13, LOW);
  delay(500); // Wait for 1000 millisecond(s)
  
  digitalWrite(12, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(12, LOW);
  delay(500); // Wait for 1000 millisecond(s)
 
  digitalWrite(11, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(11, LOW);
  delay(500); // Wait for 1000 millisecond(s)
  
  digitalWrite(10, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(10, LOW);
  delay(500); // Wait for 1000 millisecond(s)
  
  digitalWrite(9, HIGH);
  delay(500); // Wait for 1000 millisecond(s)
  digitalWrite(9, LOW);
  delay(500); // Wait for 1000 millisecond(s)
 
}

 

결과

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+추가

LED를 순차적으로 켜지게 제어하기

 

소스코드

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void setup()
{
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
}
 
void loop()
{
  digitalWrite(13, HIGH);
  delay(250);
  digitalWrite(12, HIGH);
  delay(250);
  digitalWrite(11, HIGH);
  delay(250);
  digitalWrite(10, HIGH);
  delay(250);
  digitalWrite(9, HIGH);
  delay(250); // Wait for 1000 millisecond(s)
  
  digitalWrite(13, LOW);
  digitalWrite(12, LOW);
  digitalWrite(11, LOW);
  digitalWrite(10, LOW);
  digitalWrite(9, LOW);
  delay(500); // Wait for 1000 millisecond(s)
  
}

 

결과

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