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int led = 13; | |
void setup() { | |
// initialize the digital pin as an output. | |
pinMode(led, OUTPUT); | |
} | |
// the loop routine runs over and over again forever: | |
void loop() { | |
digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level) | |
delay(1000); // wait for a second | |
digitalWrite(led, LOW); // turn the LED off by making the voltage LOW | |
delay(1000); // wait for a second | |
} | |