Random Led Blinking

Projects Programming
1

HI there,

I got some Leds and want to make blink one random at each loop/every 200ms what fonctions do I use?

There's my actual code :

int pinLed1, pinLed2;
void setup()
{
pinLed1 = 2;
pinLed2 = 4;

pinMode(pinLed1, OUTPUT);
pinMode(pinLed2, OUTPUT);

digitalWrite(pinLed1, LOW);
digitalWrite(pinLed2, LOW);
}
void loop()
{
digitalWrite(pinLed1, HIGH);
delay(200);
digitalWrite(pinLed1, LOW);
delay(200);
digitalWrite(pinLed2, HIGH);
delay(200);
digitalWrite(pinLed2, LOW);
delay(200);
}

Thanks for help (pretty urgent)

2

As a start look at the random() function and use the value it produces in the delay() function, noting that is not actually the best way to do it.

3

Try the following

In setup() seed the random number generator with the input from an unconnected analog pin using the randomSeed() function.

In loop() use the random() function to select a number either 0 or 1. Then depending on you random number turn one or the other led on. Wait 100ms turn both leds off. Wait another 100ms and restart the loop.

Ian