week15

1. 口頭上複習之前學過的內容
1.1. Arduino 的 Output (LED, Motor, Servo)
1.2. Arduino 的 Input (Button PULL_UP, 可變電阻, 光敏電阻)
1.3. Arduino 的 Serial COM (communication) 與電腦連接通訊

void setup(){

  //start serial connection

  Serial.begin(9600);

  //configure pin2 as an input and enable the internal pull-up resistor

  pinMode(2, INPUT_PULLUP);

  pinMode(13, OUTPUT); 

  int now=0;

}

void loop(){

  //read the pushbutton value into a variable

  int sensorVal = digitalRead(2);

  if (sensorVal == HIGH) {

    digitalWrite(13, LOW);

    

  } 

  else {

    digitalWrite(13, HIGH);

    Serial.write(65);

    delay(120);

  }

}