Page 215 - Tasarım Beceri Atölyeleri Öğretmen El Kitabı

byte rowPins[ROWS] = {14, 15, 16, 17}; //Row pinouts of the keypad
byte colPins[COLS] = {18, 19, 20, 21}; //Column pinouts of the keypad

Keypad myKeypad = Keypad( makeKeymap(keyMap), rowPins, colPins, ROWS, COLS);
LiquidCrystal lcd(1, 2, 4, 5, 6, 7); // Creates an LC object. Parameters: (rs, enable, d4, d5, d6, d7)

void setup() {
lcd.begin(16,2);
pinMode(buzzer, OUTPUT); // Set buzzer as an output
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
}

void loop() {
if (activateAlarm) {

lcd.clear();
lcd.setCursor(0,0);
lcd.print(“Alarm will be”);
lcd.setCursor(0,1);
lcd.print(“activated in”);

int countdown = 9; // 9 seconds count down before activating the alarm
while (countdown != 0) {
lcd.setCursor(13,1);
lcd.print(countdown);
countdown--;

tone(buzzer, 700, 100);
delay(1000);
}

207