int led_1 = 3;
void setup() {
pinMode (led_1, OUTPUT);
}
void loop() {
digitalWrite (led_1, HIGH);
delay (500);
digitalWrite (led_1, LOW);
delay (500);
}
int led_1 = 3;
void setup() {
pinMode (led_1, OUTPUT);
}
void loop() {
digitalWrite (led_1, HIGH);
delay (500);
digitalWrite (led_1, LOW);
delay (500);
}