how to get random numbers?

Hello,
when I use the following lines in the setup, I get the same numbers everytime on programstart.
But I want random-numbers. ;-)
any tips?

best regards and thank you in advance!

Code:

 randomSeed(analogRead(0));

  Serial.println("random(1000)...");
  uint8_t i, j;
  for (i=0; i<10; i++) {
    j=random(1000);
    Serial.print(j);  Serial.print(" ");
  }


tested in SR0 (and some other releases) on linux64

KarstenLehmann wrote:Hello,
when I use the following lines in the setup, I get the same numbers everytime on programstart.
But I want random-numbers. ;-)
any tips?

best regards and thank you in advance!

Finalize the scheme as shown in the figure. Before starting the sketch, turn the potentiometer knob to an arbitrary position. This is the easiest way.

The software typically produces pseudo_random data. In the case of Arduino you can extended the random values with the "seed" instruction making reference to some analog pin (A0 for instance) where you will connect the simulide generator at very low frequence in sinus. This will produce irregular values that will increase the randomness.

Look at the examples in this regard in the section "Projets Made in Simulide".

Good luck.

KarstenLehmann wrote:Hello,
when I use the following lines in the setup, I get the same numbers everytime on programstart.
But I want random-numbers. ;-)
any tips?

best regards and thank you in advance!

Code:

#include <avr/eeprom.h>
EEMEM uint8_t ee_seed;
  randomSeed(eeprom_read_byte(&ee_seed));
  eeprom_write_byte(&ee_seed, eeprom_read_byte(&ee_seed) + 1);


With a External Analog Variable Value in A4: