🚪 ماموریت ۶۸: تق‌تق‌سنج

سیم‌کشی

1. Arduino Uno (D2) ⟷ Vibration Sensor (A)
2. Vibration Sensor (B) ⟷ Arduino Uno (GND2)
3. Arduino Uno (D9) ⟷ LED (Blue) (ANODE)
4. LED (Blue) (CATHODE) ⟷ مقاومت 220Ω (PIN1)
5. مقاومت 220Ω (PIN2) ⟷ Arduino Uno (GND1)

کد

int knocks = 0;

void setup() {
  pinMode(2, INPUT_PULLUP);
  pinMode(9, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  if (digitalRead(2) == LOW) {   // the spring touched: a knock!
    knocks++;
    Serial.print("Knock ");
    Serial.println(knocks);
    digitalWrite(9, HIGH);
    delay(150);                  // ignore the ringing of the same knock
    digitalWrite(9, LOW);
  }
}