Arduino

Tools > Board > Genuino Uno
Tools > Port > /dev/ttyACM0

sudo chmod 777 /dev/ttyACM0

void setup() {
  // put your setup code here to run once:
  pinMode(13, OUTPUT) ;
}

void loop() {
  // put your main code here to run repeatedly:
  digitalWrite(13, HIGH) ;
  delay(1000) ;
  digitalWrite(13, LOW) ;
  delay(1000) ;
}