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// the setup function runs once when you press reset or power the board
void setup()
// initialize digital pin 13 as an output.
pinMode(13, OUTPUT);
pinMode(11, OUTPUT); //輸入另一個LED
int analogPin = 0;
// the loop function runs over and over again forever
void loop()
digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level)
digitalWrite(11, LOW);//讓另一個LED暗
delay(1000); // wait for a second
digitalWrite(13, LOW); // turn the LED off by making the voltage LOW
digitalWrite(11, HIGH);//讓另一個LED亮
delay(1000); // wait for a second
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