Generating a random Number (0 or 1)

Projects Programming
1

Hello,

every 100ms i want to "have" a random number (0 or 1), but the results of my code are a little bit "boring:

2222222211122222211122122211211222111111222112111221121112221221112222211122122211121122

I would like to have numbers like this:

1212212212111211122122121212212212212211121112121222221212122111211122221211211121212221

This is my code:

void setup(){
  Serial.begin(9600);
}

void loop() {
  randomSeed(millis());
  byte Zufallszahl=random(1,3);
  Serial.print(Zufallszahl);
  delay(100);
}

When i change millis() to analogRead(0) it is getting "better", but it`s still not randomized enough for me.

I dont want to use additional hardware.** **I dont want to talk about additional hardware.

Greetz Chris

2

When i change millis() to analogRead(0) it is getting "better", but it`s still not randomized enough for me.

The randomSeed() function is supposed to be called once. Not once for each random number you want.

3

Try the Entropy Library from wanderson. If it does what he says it does, this little bit of software should solve your problem.

4

I`ll have a closer look! :slight_smile:

Thanks!

Greetz Chris