| /* |
| 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; |
| |
| // the setup routine runs once when you press reset: |
| 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 |
| } |
