/* Blink Turns an LED on for one second, then off for one second, repeatedly. This example code is in the public domain. */ void setup() { // initialize the led pin as an output. pinMode(BOARD_LED_PIN, OUTPUT); } void loop() { digitalWrite(BOARD_LED_PIN, HIGH); // set the LED on delay(1000); // wait for a second digitalWrite(BOARD_LED_PIN, LOW); // set the LED off delay(1000); // wait for a second }