Needed Help with this project !!! Please Help !!! Urgent !!!

Discussion in 'The Projects Forum' started by parvez_19_01, Apr 6, 2009.

  1. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    Hi!

    Please help me as I am trying this project from more than a month

    I am a newbie
    But I know basics

    I have 160 leds with a power supply of 5v

    I want to glow each of them after a delay of 0.00625 second

    In this way all of them can glow in 1 second (0.00625 * 160 = 1 sec)

    it should look like a running light

    Please help !!!!!!!!!!!!!!!

    Regards
     
  2. galal_mounir

    Member

    Apr 5, 2009
    29
    0
    would u like to use a microcontroller or just simple components cuz if u r going to use simple components ur going to have a hell of a circuit its going to be very large while if u use a microcontroller it will be much easier but u need some microcontrolling basics
     
  3. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    Could u give me both the options please
     
  4. galal_mounir

    Member

    Apr 5, 2009
    29
    0
  5. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
  6. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    And if please u can tell me the option with simple components
     
  7. galal_mounir

    Member

    Apr 5, 2009
    29
    0
    so u need a 160 bit counter :| thats alot man cant u reduce the 160 leds a bit

    mmmmm....

    anyways to make this circuit using simple components u would need to use the 555 oscilator as a timer to time the pulses and use a shift register which shifts 1 so for example if it is 4 bits the first code will be 0000 then shift right 1 after the first clk so it will become 1000 then shift another 1 after the second clk so it will become 1100 and so on so u need to search for the highest shift register u can get, for this u would need a SIPO shift register and put 1 in the serial input
     
  8. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    Sorry I am not that savvy

    Please help me with simple components

    Can u let me one thing that if we use a capacitor
    which charges fully in a second
    and as it charges something which we trigger at specific interval
    as the voltage increases something like that, you can better suggest

    Please use, Very basic components

    Regards
     
  9. galal_mounir

    Member

    Apr 5, 2009
    29
    0
    does that mean you dont want to use any ICs ????
     
  10. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    ya correct!
     
  11. galal_mounir

    Member

    Apr 5, 2009
    29
    0
    OMG !!!!!!!!! :| :| thats nearly imposible you need to use ICs man at least for the timing part its impossible to design a ckt like that using only resistors and caps
     
  12. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    Cant use resistor capacitor transistor and

    RC filter circuit
     
  13. galal_mounir

    Member

    Apr 5, 2009
    29
    0
    deadly hard and wont be acurrat
     
  14. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    Can u tell me how to put a led on once the capacitor is fully charged?
     
  15. galal_mounir

    Member

    Apr 5, 2009
    29
    0
    you will need to use a comparator which is an IC as well :S to compare the capacitor voltage if it is fully charged or not
     
  16. galal_mounir

    Member

    Apr 5, 2009
    29
    0
    cant u use any IC's at all??? not even 1 ?????????
     
  17. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    cant we use rc filter circuit to trigger at one certain point of voltage
     
  18. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    I am not savvy to start with any ic

    I would like to know how to do it without IC

    I want to know how the current flows from one part of the circuit to other

    IC does solves that

    creating a delay circuit without IC is also possible
     
  19. parvez_19_01

    Thread Starter Member

    Apr 6, 2009
    12
    0
    sorry IC doesn let u know how the current passes

    as it is all integrated

    making a circuit with all basic and simple components lets to know how it flows
     
  20. galal_mounir

    Member

    Apr 5, 2009
    29
    0
    u need a comparator to give u the trigger u need when the capacitor is fully charged other than that i cant think of a way to give u a pulse when the capacitor is fully charged
     
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