スイッチの状態を読み取る

// constants won't change. They're used here to set pin numbers:
const int buttonPinPD = 10;  // the number of the pushbutton (PullDown) pin
const int buttonPinPU = 11;  // the number of the pushbutton (PullUp) pin
const int ledPin =  13;      // the number of the LED pin

// variables will change:
int buttonStatePD = 0;         // variable for reading the pushbutton(PullDown) status
int buttonStatePU = 0;         // variable for reading the pushbutton(PullUp) status

void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(buttonPinPD, INPUT);  // ★ ピンモードを入力に設定
  pinMode(buttonPinPU, INPUT);  // ★ ピンモードを入力に設定
}

void loop() {
  // read the state of the pushbutton value:
  buttonStatePD = digitalRead(buttonPinPD); // ★ ピンの値を読み取り
  buttonStatePU = digitalRead(buttonPinPU); // ★ ピンの値を読み取り

  // check if the pushbutton is pressed.
  // If it is, the buttonStateUD is HIGH or the buttonStateUU is LOW:
  if (buttonStatePD == HIGH || buttonStatePU == LOW) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
}

void setup() {
  //configure pin 10 as an input and enable the internal pull-up resistor
  pinMode(10, INPUT_PULLUP); // ★ ２番ピンのプルアップ抵抗を有効にして入力モードにする
  pinMode(13, OUTPUT);

}

void loop() {
  //read the pushbutton value into a variable
  int pushbutton = digitalRead(2);　// ★ 2番ピンの値を読み取る

  // Keep in mind the pull-up means the pushbutton's logic is inverted. It goes
  // HIGH when it's open, and LOW when it's pressed. Turn on pin 13 when the
  // button's pressed, and off when it's not:
  if (pushbutton == HIGH) {
    digitalWrite(13, LOW);
  } else {
    digitalWrite(13, HIGH);
  }
}

int sensorPin = A0;    // アナログ入力ピン
int ledS1Pin = 12;     // S1が押された時に光るLED
int ledS2Pin = 13;     // S2が押された時に光るLED
int analogValue = 0;   // アナログピン入力値

void setup() {
  // declare the ledPin as an OUTPUT:
  pinMode(ledS1Pin, OUTPUT);
  pinMode(ledS2Pin, OUTPUT);
}

void loop() {
  // read the value from the sensor:
  analogValue = analogRead(sensorPin);

  int s1 = LOW ;
  int s2 = LOW ;
  if (640 <= analogValue && analogValue <= 720) {
    // S1 ON
    s1 = HIGH ;
  }
  if (730 <= analogValue && analogValue <= 810) {
    // S2 ON
    s2 = HIGH ;
  }
  if (520 <= analogValue && analogValue <= 600) {
    // S1 + S2 ON
    s1 = HIGH ;
    s2 = HIGH ;
  }

  // turn the ledPin
  digitalWrite(ledS1Pin, s1);
  digitalWrite(ledS2Pin, s2);
}