/*
 *  PWMサンプル
 *  LEDの明るさを徐々に変える
*/

const int PIN_LED = 3;

void setup() {
  
  pinMode(PIN_LED, OUTPUT);

  Serial.begin(115200);

}

void loop() {
  
  for (int i = 0; i <= 255; i++)
  {
    Serial.println(i);
    analogWrite(PIN_LED, i);
    delay(10);
  }

  for (int i = 255; i >= 0; i--)
  {
    Serial.println(i);
    analogWrite(PIN_LED, i);
    delay(10);
  }

}