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Arduino Uno Rev3

ピン配置

UNO R3 | Arduino Documentation

回路図

Arduino_Uno_Rev3-schematic.pdf

GPIO

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void setup() {
  // put your setup code here, to run once:
  pinMode(0, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(0, HIGH);
  delay(1000);
  digitalWrite(0, LOW);
  delay(1000);
}