第2回

プログラム

            const int DIR  = 8;
const int STEP = 9;
const int LIGHT_PIN = A1;
const int LED_PIN = 13;   // LED追加

int threshold = 200;

bool ledState = false;
unsigned long previousMillis = 0;
int interval = 750; // 点滅間隔（ms）

void setup() {
  Serial.begin(9600);

  pinMode(DIR, OUTPUT);
  pinMode(STEP, OUTPUT);
  pinMode(LED_PIN, OUTPUT);

  digitalWrite(DIR, LOW);
  digitalWrite(STEP, LOW);
}

void loop() {
  int val = analogRead(LIGHT_PIN);
  Serial.println(val);

  if (val > threshold) {
    // モーター回転
    digitalWrite(DIR, HIGH);
    stepMotor(7500);

    // LED点滅（時間で制御）
    unsigned long currentMillis = millis();
    if (currentMillis - previousMillis >= interval) {
      previousMillis = currentMillis;
      ledState = !ledState;
      digitalWrite(LED_PIN, ledState);
    }

  } else {
    // 明るいときはLED消灯
    digitalWrite(LED_PIN, LOW);
  }
}

void stepMotor(int delaytime){
  digitalWrite(STEP, HIGH);
  delayMicroseconds(delaytime);
  digitalWrite(STEP, LOW);
  delayMicroseconds(delaytime);
}
        

振り返り