/* Blink Turns on an LED on for one second, then off for one second, repeatedly. This example code is in the public domain. */ // Pin 13 has an LED connected on most Arduino boards. // give it a name: int led = 13; int led2 = 6; int led3 = 3; // the setup routine runs once when you press reset: void setup() { // initialize the digital pin as an output. pinMode(led, OUTPUT); pinMode(led2, OUTPUT); pinMode(led3, OUTPUT); } // the loop routine runs over and over again forever: void loop() { digitalWrite(led, LOW); // turn the LED on (HIGH is the voltage level) digitalWrite(led2, LOW); digitalWrite(led3, HIGH); delay(5000); // wait for a second digitalWrite(led, LOW); // turn the LED off by making the voltage LOW digitalWrite(led2, HIGH); digitalWrite(led3, LOW); delay(5000); // wait for a second }