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Random signal

Discussion in 'General Electronics Discussion' started by Britannicus, Mar 2, 2012.

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  1. Britannicus

    Britannicus

    9
    0
    Feb 26, 2012
    Hi all,

    I wonder if you have any suggestions - I'm looking for a cheap solution to provide a random result - maybe there's a clever IC out there?

    what I'm hoping to produce a random number of pulses I can then use for a random timer for a game I'm hoping to make for my kids. I've seen electronic dice so figure something must exist out there that will give


    A randomly variable time between pulses

    OR

    a random number of pulses and then a pause (as I can use it as an input to a decade counter or the like)

    Now, I know that there is no such thing as truly random, so I'll go for "unpredictable" Any brilliant suggestions ??
     
  2. duke37

    duke37

    5,364
    772
    Jan 9, 2011
    One way would be to have a high frequency oscillator, feeding a counter and running the oscillator when a button is pressed. If run at 1MHz, you would need to release the button to an accuracy of 1 microsecond to select a specific output!!!
     
  3. assuc

    assuc

    12
    0
    Dec 20, 2011
    use 555 timer ic or oscillator according to your requirement
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,500
    2,840
    Jan 21, 2010
    A close to random source is a white noise source. If the output from one of these is converted into a pulse train and a regular timer used to gate it on and off, you will get an unpredictable number of pulses -- essentially random.
     
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