//app.ino
#define LED_PIN 8 //8番ピン
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
pinMode(LED_PIN, OUTPUT); //ピンを出力に設定
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
digitalWrite(LED_PIN, HIGH); //LEDを点灯
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
digitalWrite(LED_PIN, LOW); //LEDを点灯
delay(1000); // wait for a second
}