int pin_LED1 = 6;
int pin_LED2 = 7;
int pin_LED3 = 8;
void start()
{
int q;
q = random(3);
if (q == 0)
{
digitalWrite(pin_LED1, HIGH);
digitalWrite(pin_LED2, LOW);
digitalWrite(pin_LED3, LOW);
}
else if (q == 1)
{
digitalWrite(pin_LED1, LOW);
digitalWrite(pin_LED2, HIGH);
digitalWrite(pin_LED3, LOW);
}
else if (q == 2)
{
digitalWrite(pin_LED1, LOW);
digitalWrite(pin_LED2, LOW);
digitalWrite(pin_LED3, HIGH);
}
}
void setup()
{
pinMode(pin_LED1, OUTPUT);
pinMode(pin_LED2, OUTPUT);
pinMode(pin_LED3, OUTPUT);
}
void loop()
{
digitalWrite(pin_LED1, LOW);
digitalWrite(pin_LED2, LOW);
digitalWrite(pin_LED3, LOW);
delay(500);
start();
delay(500);
}
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