Arduino-v211019

포토레지스터 연결하기 ( 저항은 10kΩ 임)

void setup()
{
  Serial.begin(9600);
  pinMode(A0, INPUT);
}
 
void loop()
{
  int sensorValue = analogRead(A0);
  Serial.print("Sensor value : ");
  Serial.println(sensorValue);
}

 

LED 추가하기(LED와 같이 연결한 3개의 저항은 220Ω 임)

int Thr = 500;  // 밝기 값 변경
 
#define ON 1
#define OFF 0
 
int ledArr[] = {11, 10, 9};
int ledSize = sizeof(ledArr) / sizeof(ledArr[0]);
 
void setup()
{
  Serial.begin(9600);
  pinMode(A0, INPUT);
  for(int i=0; i<ledSize; i++)
    pinMode(ledArr[i], OUTPUT);
}
 
void ledOn(int state)
{
  for(int i=0; i<ledSize; i++)
      digitalWrite(ledArr[i], state);
}
 
void loop()
{
  int sensorValue = analogRead(A0);
  Serial.print("Sensor : ");
  Serial.println(sensorValue);
  
  if(sensorValue < Thr) // 어두워지면 값이 작아짐
    ledOn(ON);
  else
    ledOn(OFF);
}

릴리패드 연결하기

#define NOTE_C4  262
#define NOTE_D4  294
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_G4  392
#define NOTE_A4  440
 
#define PIEZO_PIN 2
 
//notes in the melody:
int melody[] = {
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_E4,
  0,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_E4,
  0,
  NOTE_A4, NOTE_G4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_E4,  
};
 
// note durations: 4 = quarter note, 8 = eighth note, etc
int noteDurations[] = {
  2, 2, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4, 4, 4, 2,
  2, 
  2, 2, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4, 4, 4, 2, 
  2, 
  2, 2, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4, 4, 4, 2, 
};
 
void setup(){
  for (int thisNote = 0; thisNote < sizeof(melody) / sizeof(melody[0]); thisNote++) {
    int noteDuration = 1000/noteDurations[thisNote];
    tone(PIEZO_PIN, melody[thisNote],noteDuration);
 
    int pauseBetweenNotes = noteDuration * 1.30;
    delay(pauseBetweenNotes);
    
    noTone(PIEZO_PIN); 
  }
}
 
void loop(){}

 

 

소리가 나는 동안 LED가 켜져 있기

#define NOTE_C4  262
#define NOTE_D4  294
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_G4  392
#define NOTE_A4  440
 
#define PIEZO_PIN 2
 
//notes in the melody:
int melody[] = {
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_E4,
  0,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_E4,
  0,
  NOTE_A4, NOTE_G4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4,
  NOTE_C4, NOTE_D4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_F4, NOTE_E4,  
};
 
// note durations: 4 = quarter note, 8 = eighth note, etc
int noteDurations[] = {
  2, 2, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4, 4, 4, 2,
  2, 
  2, 2, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4, 4, 4, 2, 
  2, 
  2, 2, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4,
  4, 4, 4, 4, 4, 8, 4, 8, 4, 4, 4, 2, 
};
 
void setup(){
  pinMode(3, OUTPUT);
  digitalWrite(3,HIGH);
  for (int thisNote = 0; thisNote < sizeof(melody) / sizeof(melody[0]); thisNote++) {
    int noteDuration = 1000/noteDurations[thisNote];
    tone(PIEZO_PIN, melody[thisNote],noteDuration);
 
    int pauseBetweenNotes = noteDuration * 1.30;
    delay(pauseBetweenNotes);
    
    noTone(PIEZO_PIN); 
  }
  digitalWrite(3,LOW);
}
 
void loop()
{
}