Arduino Circuit board test

接法
1.正極
5v->circuit_board(+)->(+)resistors(C7)
2.訊號
digital(12)->D7
3.LED
(+)->E8
( -)->E9
4.負極（地線）
A9->circuit_board(-)->GND

CODE


void setup(){
  pinMode(12,OUTPUT);
}
void loop(){
  digitalWrite(12,HIGH);
  delay(1000);
  digitalWrite(12,LOW);
  delay(1000);
}