help with simple led circut

Discussion in 'Homework Help' started by xavier20, Aug 10, 2009.

  1. xavier20

    Thread Starter New Member

    Aug 1, 2009
    1
    0
    Hi im kinda new at electronics but have some basic knowledge an skill. im desperatlly in need of making a basic small circut to make 32 smd led's flash randomlly at a resnable speed without using a program chip. if someone could please help me in laymens terms that'd be great. thanks
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    Google this phrase -> pseudo random shift register. I remember doing it on a funny lab project just before a school break. But that was long time ago. So I can not help you more
    Good luck
     
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    You can make something which looks random but it is not.

    Take four 8-bit binary counters and wire them as to create a 32-bit counter. Then clock the first counter at 5 Hz and you will see the leds flashing according to the counting sequence. You will know that but the others won't and it will look random.
     
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