🧮 ماموریت ۵۰: شمارنده‌ی بدون پرش

سیم‌کشی

1. Arduino Uno (D2) ⟷ Push Button (PIN_A1)
2. Push Button (PIN_B1) ⟷ Arduino Uno (GND2)

کد

const int BTN = 2;
int count = 0;
int stableState = HIGH;
int lastReading = HIGH;
unsigned long lastChange = 0;

void setup() {
  pinMode(BTN, INPUT_PULLUP);
  Serial.begin(9600);
}

void loop() {
  int reading = digitalRead(BTN);
  if (reading != lastReading) lastChange = millis();   // it bounced: restart the clock
  if (millis() - lastChange > 50 && reading != stableState) {
    stableState = reading;
    if (stableState == LOW) {                            // a real, clean press
      count++;
      Serial.println(count);
    }
  }
  lastReading = reading;
}